Tag: Monitoring data

Expanding Air Quality Monitoring with Low Cost Sensors: What Policymakers and Practitioners Need to Know

Posted on by Aurélia Lemoine

6 March 2026

The UN Environment Programme’s Global Environment Outlook 7 (GEO‑7) warns that “globally, six out of the top ten countries with the worst air pollution levels are from Asia and the Pacific, leading to respiratory diseases, poor health and lower agricultural productivity”. Against this global backdrop, EANET’s two new publications offer region‑specific guidance to help countries deploy Hybrid Air Quality Monitoring Networks (HAQMN) that combine reference‑grade monitors with Low‑Cost Sensors (LCS).

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Guidelines for Establishing a Hybrid Air Quality Monitoring Network – Strategic direction for policymakers and planners

While reference-grade monitors have been traditionally used for air quality monitoring, based on their reliability and high accuracy, they also require a high investment and strong technical operation knowledge. Sensors refered to as ‘Low-Cost Sensors’ (LCS), on the other hand, have appeared in the recent years with improved technology related to the size and energy efficiency, lower cost and easier deployment, in particular in zones with limited infrastructures. However, LCS lack the same measurement precision and require maintenance and data analysis. The complementary use of LCSs and reference-grade monitors is referred to as Hybrid Air Quality Monitoring with Low-Cost Sensors (HAQMN), as described in these EANET Guidelines.

The Hybrid Air Quality Monitoring with Low-Cost Sensors Guidelines provide governments with a strategic framework for integrating LCS into existing reference‑grade networks. They emphasize that LCS should supplement, not replace,  reference-grade monitors, ensuring expanded coverage without compromising accuracy. They also lay out critical principles such as robust Quality Assurance and Quality Control practices, contextualized network planning, and clear differentiation from the EANET’s traditional monitoring practices and guidelines.

Aimed at senior government officials, these Guidelines describe institutional responsibilities, site selection criteria, and governance considerations. They serve as supporting documents to the EANET’s existing technical manuals, helping countries in the region and beyond expand monitoring capacity methodically and consistently.

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Technical Manual for Hybrid Air Quality Monitoring with Low‑Cost Sensors – Operational guidance for technicians and practitioners

The Technical Manual provides detailed, operational instructions for implementing and maintaining LCS within hybrid networks. It includes step‑by‑step procedures for LCS assembly, installation, calibration, site preparation, communication systems, maintenance, and safety.

The document also incorporates expanded Quality Assurance and Quality Control procedures—such as data screening, bias correction, and performance evaluation—reflecting technical revisions made after expert review. It is designed for technicians, field operators, and analysts responsible for ensuring high‑quality, reliable data.

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How the Two Reports Work Together

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A Regional Response to a Global Environmental Warning

Together, EANET’s Hybrid Air Quality Monitoring Guidelines and Technical Manual form a comprehensive, region‑tailored toolkit that intend to help countries modernize their monitoring systems, strengthen data quality, and better protect public health.

Adopted by the Twenty-seventh Intergovernmental Meeting on the EANET in November 2025, both publications reflect the increased interest to intergrate the use of new technologies for air quality monitoring in the EANET countries, in line with the EANET’s recently launched Medium-Term Plan (2026-2030).

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Read the Guidelines for Establishing Hybrid Air Quality Monitoring Network (HAQMN) in the EANET region

Read the Technical Manual for Hybrid Air Quality Monitoring with Low-Cost Sensors: Implementation Guidelines in EANET

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Photo credits: Ho Chi Minh by Andrei Miranchuk (2019).

EANET Monitoring Data Drives Scientific Research in 2024–2025

Posted on by Aurélia Lemoine

9 February 2026

EANET data continued to play an important role in international scientific research during 2024–2025, with over 135 peer-reviewed papers using the network’s long-term monitoring datasets to examine atmospheric chemistry, ecosystem impacts, and regional air-pollution trends. The number of research highlights the important scientific value of harmonized regional monitoring systems in addressing regional air-pollution challenges.

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Advancing Understanding of Atmospheric Deposition and Air Pollution

A large share of recent publications used EANET observations to investigate wet and dry deposition of nitrogen, sulfur, and other atmospheric pollutants across East and Southeast Asia. Studies examined long-term deposition trends, spatial variability of precipitation chemistry, and seasonal patterns in pollutant concentrations (e.g., Temporal and seasonal variations in high-concentration precipitation samples at EANET sites in Japan: 20 years of wet-deposition data, 2025; Spatiotemporal distribution in chemical composition of wet atmospheric deposition in Bandung, Indonesia, 2024), contributing to improved understanding of how emission changes influence regional environmental conditions.

EANET datasets were also widely applied in atmospheric modelling research. Scientists incorporated the measurements to evaluate chemistry-climate models, refine emission inventories, and improve simulations of aerosol formation, transport, and deposition processes (e.g., Evaluation of atmospheric sulfur dioxide simulated with the EMAC chemistry-climate model using satellite and ground-based observations, 2025). Such work strengthens the reliability of regional and global air-quality projections used in policy and climate assessments.

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Regional Data Supporting Global Science and linking Air Pollution, Ecosystems, and Climate

Beyond atmospheric science, researchers increasingly used EANET data to explore environmental impacts of deposition on ecosystems. Recent studies analysed nitrogen inputs to lakes and forested watersheds, relationships between acid deposition and vegetation changes, and long-term variations in stream and precipitation chemistry (e.g., Wet and dry deposition of atmospheric nitrogen to Lake Erhai Basin: Composition, spatiotemporal patterns and implications, 2025). These findings help clarify how atmospheric pollution interacts with climate variability and ecosystem health across the region.

In addition, several global-scale investigations incorporated EANET measurements to evaluate worldwide nitrogen-deposition trends and to assess future scenarios under changing socio-economic and climate conditions (e.g., Changing patterns of global nitrogen deposition driven by socio-economic development, 2025), demonstrating the EANET’s contribution to global environmental assessments.

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Strengthening Evidence-Based Regional Cooperation

The increasing number of publications using EANET data reflects both the growing accessibility of standardized monitoring datasets and the importance of long-term observations for regional cooperation. By providing comparable measurements across multiple Participating Countries, EANET enables cross-country analyses that support scientific collaboration, policy evaluation, and improved understanding of regional air pollution.

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Useful Resources:

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Photo credits: a house on a hill with mountains in the background (2023) by Charles MingZ.

EANET Data Featured in two Regional and Global Air Quality Management Platforms – the RAPAP and AQMx Platforms

Posted on by Aurélia Lemoine

23 April 2025 – Bangkok, Thailand

In 2022, ESCAP Member States adopted a Regional Action Programme on Air Pollution, and UNEP Member States in 2024, a resolution on Promoting Regional Cooperation on Air Pollution to Improve Air Quality Globally, which both include increased cooperation and knowledge exchange on air quality through online cooperation platforms, among others. EANET’s long-standing monitoring activities are being promoted in these multilateral platforms.

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What is the RAPAP Partnership and Coordination Platform?

Adopted in 2022 at the 7th session of the United Nations Economic and Social Commission for Asia and the Pacific (ESCAP) Committee on Environment and Development (CED7), the Asia-Pacific Regional Action Programme on Air Pollution (RAPAP)  aims to promote clean air for all in Asia and the Pacific through various action areas including air quality management, air quality monitoring and data sharing, best practices, capacity building and multilateral cooperation. In the Ministerial Declaration of the CED7, one of the RAPAP’s objectives is: “To establish an open regional platform for the exchange of information and best practices on air pollution challenges and solutions, as may be deemed necessary and appropriate by members and associate members of ESCAP”. The RAPAP Partnership and Coordination Platform was established following this Ministerial Declaration and formally launched during the Fifth Asia Pacific Clean Air Partnership (APCAP) Joint Forum in March 2025 in Yokohama, Japan.

Showcasing National Plans, multilateral mechanisms, stakeholder lists, resources, live air quality data, and events, the platform is a repository for air quality actions and tools in Asia and the Pacific. The Live Air Quality Monitoring page links to various regional and global platforms including the European Space Agency (ESA), the Air Quality Index China (AQICN), and the National Institute of Environmental Research (NIER) Republic of Korea, among others.

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What is AQMx?

The 6th edition of the United Nations Environment Assembly (UNEA-6) in February and March 2024 adopted a resolution on Promoting Regional Cooperation on Air Pollution to Improve Air Quality Globally which encourages Member States to continue their efforts to improve air quality by working on national air quality programs and standards. Through this resolution, Member States requested UNEP’s Executive Director to form an air quality cooperation network to raise awareness of air pollution’s impacts and the importance of mitigation actions, supporting capacity building and collaboration. It also referred to building an updated global online platform for information-sharing and communication on air quality.

Following this, the Air Quality Management Exchange Platform – AQMx – was developed by the Climate and Clean Air Coalition (CCAC), as a component of the CCAC Clean Air Flagship, in response to the need to build capacity for air quality management worldwide and to provide tools to support governments, in line with UNEA’s resolution on Promoting Regional Cooperation on Air Pollution to Improve Air Quality Globally. The platform is mainly composed of two parts: a Resources Exchange Library and the “Curated Guidance” section which aims to, in its first stage, provide a “top 10” list of actions for air quality managers to prepare a comprehensive air quality management planning.

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How is EANET monitoring data promoted?

EANET data is shared in the AQMx Resource Exchange Library where users can access the EANET monitoring page and download the EANET Data Reports.

In the RAPAP Platform, EANET is presented in the Multilateral Mechanism section of the platform which includes an overview of the EANET and various resources such as EANET data and reports.

Screenshots from the AQMx (left) and RAPAP (right) platforms

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The launch of the RAPAP and AQMx platforms reflects growing regional and global efforts to strengthen cooperation on air pollution. By promoting long-standing efforts such as EANET’s monitoring activities across multiple platforms, these frameworks not only enhance transparency and capacity building but also reinforce the collective commitment of countries to tackle air pollution and protect public health and the environment.

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Access EANET Data on the EANET Monitoring Data page.

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Photo credits: white clouds over blue mountain (2021) by Praveen Thirumurugan; all other images: all rights reserved to CCAC and ESCAP.

Navigating Progress and Future Initiatives: Highlights from the EANET WG2023 Meeting

Posted on by Aurélia Lemoine

30 August 2023 – Bangkok, Thailand

The Working Group Meeting in 2023 (WG2023) on the EANET was held online on 22 and 23 August 2023. Over 50 representatives from the 13 EANET countries, the Secretariat and the Network Center for the EANET, participated in the meeting to discuss past activities, proposed projects for 2024, and important administrative matters.

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Activities in 2022 and 2023: Collaborative Efforts for Better Air Quality in East and Southeast Asia

The completion of EANET projects in 2022 and ongoing activities in 2023 were presented during the WG2023 meeting. The Secretariat underscored its commitment to Core Activities from 2022 to July 2023. These included organizing the EANET major annual meetings, leading partnership and communication activities, and awareness sessions, such as the EANET Regional Awareness Workshop in Bangkok and National Awareness Workshops in Lao PDR and in the Philippines.

The Network Center highlighted activities spanning 2022 and 2023, including continued acid deposition and air quality monitoring, QA-QC and capacity building activities, and also Individual Training, the Emission Inventory Webinar Workshop, and the MICS-Asia Workshop. Notably, 2022 Projects were successfully completed, and eight Project Activities were launched in 2023. Among the 2023 projects was the VOC Advisory Group Meeting in Manila, a component of the broader Feasibility for Promoting VOCs’ Related Capacity Building in the EANET project.

Screenshot of some of the WG2023 participants

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EANET Medium Term Plan Mid-Term Review’s Inception

The Mid-Term Review of the EANET Medium Term Plan (MTP) for 2021-2025 was introduced during the WG2023. The Secretariat and Evaluator leading the Review presented the Inception Report for the Mid-Term Review of the MTP. Participating Countries engaged in discussions, sharing their perspectives and suggestions on the Plan’s review.

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Draft EANET Project Plans for 2024

EANET’s Project Plans for 2024, submitted to the EANET Project Fund, came into focus during WG2023. The Network Center and Secretariat jointly introduced 12 EANET Project Plans for the upcoming year, ranging from continuing initiatives to new proposals. These projects included diverse subjects such as atmospheric deposition effects on ecosystems, VOC-related capacity building, air quality monitoring network development, and more. Participating Countries discussed potential overlaps, funding optimization, and suggestions to strengthen project proposals. Encouragement for external partnerships was highlighted.

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Modifications to EANET Project Fund and Project Guideline and Administrative and Financial Management Guideline

WG2023 included discussions on modifications to the EANET Project Fund and Project Guideline, and on revising the Guidelines on Administrative and Financial Management for the Secretariat and Network Center. The Secretariat presented the current Guidelines against proposed changes submitted by Participating Countries at the Online Meeting on the Revision of the Guidelines. Participating Countries engaged in extensive discussions to refine definitions and procedures.

After the WG2023, the Secretariat and Network Center will prepare a new draft of both Guidelines, integrating proposed changes from discussions, for further review by Participating Countries’ National Focal Points, and including review from UNEP and ACAP, hosts of the Secretariat and the Network Center for the EANET.

The revised Guidelines, along with the EANET Project Proposal, and the Mid-Term Review of the EANET MTP, will be further discussed at the Twenty-Third Scientific Advisory Committee (SAC23) online Meeting to be held in October 2023, and during the 25th Intergovernmental Meeting (IG25) on the EANET in November 2023, in Hanoi, Viet Nam.

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Find out more about EANET’s Project Fund and Project Activities.

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Photo credits: Photo of a Common Indian Crow in Krabi, Thailand (2020) by Erik Karits on Unsplash; all other photos, all rights reserved to EANET.

The Twenty-fourth Senior Technical Managers’ Meeting on the EANET

Posted on by Aurélia Lemoine

5 September 2023 – Bangkok, Thailand

The Twenty-fourth Senior Technical Managers’ Meeting (STM24) on the Acid Deposition Monitoring Network in East Asia (EANET) took place in Niigata, Japan and online, on 29 and 30 August 2023. The Meeting gathered over 40 senior technical officials from the 13 EANET Participating Countries to discuss the status of the Network’s monitoring activities.

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EANET Monitoring Activities in 2022

Dr. Shiro Hatakeyama, the Director General of the Asia Center for Air Pollution Research (ACAP), delivered the Opening Remarks, followed by Welcome Remarks by Mr. Bert Fabian, the Coordinator of the Secretariat for the EANET.

After presenting the progress of EANET activities in 2022 since STM23, the Network Center for the EANET (NC) shared the results of various reports on acid deposition and related substances monitoring activities. STM24 participants were invited to discuss and share knowledge and experience to collectively review these draft publications.

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Some Participants of the STM24 in Niigata, Japan

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Overview of the Preliminary Draft Data Report 2022 and Evaluation of the Results of the Inter-laboratory Comparison (ILC) Projects 2022

The NC presented the Preliminary Draft Data Report 2022. This report focuses on wet deposition, dry deposition (air concentration), soil and vegetation, inland aquatic environment, and catchment-scale monitoring. It includes a summary of the monitoring data in 2022 and related information submitted by the Participating Countries.

The NC also introduced the preliminary draft Report on the Inter-laboratory Comparison Projects in 2022 for wet deposition, dry deposition (filter pack method), soil, and inland aquatic environment.

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Consideration of the National Monitoring Plans (NMPs), Current Monitoring Activities for the EANET, and Overall Air Concentration Monitoring Status of the Participating Countries

In line with previous STM meetings’ process, representatives of the Participating Countries presented their National Monitoring Plans (NMPs) and current EANET activities, including monitoring capacities, technical challenges, and future plans, while focusing on the general improvement of the activities of the EANET.

Dr. Meng Fan, Deputy Director General, ACAP, delivered the Closing Remarks. He expressed his great appreciation for the improvement of the data quality due to the efforts of the Participating Countries and hoped that the EANET monitoring, research, and capacity-building activities would continue to be strengthened through the expansion of the scope of the EANET.

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The Report of the STM24 will soon be available on the Meeting Reports page. View the STM24 photos on Flickr.

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Find out more, and access EANET data on the Monitoring System page.

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Photo credits: cover photo of Japanese rice farm by S. Tsuchiya (2022), other images, all rights reserved to EANET.

The 13th International Workshop on Atmospheric Modeling Research in East Asia

Posted on by Aurélia Lemoine

1 February 2023 – Niigata, Japan

The Network Center for the EANET co-organized the 13th International Workshop on Atmospheric Modeling Research in East Asia with the community of MICS-Asia, on 22-23 December 2022. About 60 participants joined the virtual workshop.

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Improving Air Quality Models: from Data to Policy

According to the United States Environment Protection Agency (EPA), air quality modeling is “a mathematical simulation of how air pollutants disperse and react in the atmosphere to affect ambient air quality.” Through these calculations, researchers and policymakers develop predicted scenarios and design strategies to reduce the adverse effects of air pollution.

Over the years, the EANET has maintained a close relationship with the community of Model Inter-Comparison Studies for Asia (MICS-Asia). The International Workshop on Atmospheric Modeling Research in East Asia is a regular workshop of MICS-Asia which has received support from the EANET throughout the previous Medium Term Plans and was part of the EANET Project Activities in 2022. Summaries of previous MICS-Asia workshops are available in the Reports of the Session of the Scientific Advisory Committee (SAC) on the EANET.

Four working groups were established as part of the MICS-Asia Phase IV: the Air Quality Model working group, the Air Quality and Climate Model working group, the Emission Inventory working group, and the Observation working group. MICS-Asia Phase IV working groups focus on specific issues including the intercomparison of air quality models, the study of the influence of climate change on the status of air quality, the development of reliable emission inventories for model working groups, and the survey and collection of data to establish trends of concentrations of air pollutants in East Asia.

Among other sources, MICS-Asia experts referred to the results of the EANET’s 4th Periodic Report on the State of Acid Deposition in East Asia (PRSAD4) and to the EANET monitoring data to conduct their research.

Screenshot from some participants during the virtual 13th International Workshop on Atmospheric Modeling Research in East Asia

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Modeling and Impact Assessment Studies

During the workshop, international experts in modeling and impact assessment studies shared various presentations based on research activities in Asia and beyond.

Dr. Christian Hogrefe, from the U. S. Environmental Protection Agency, introduced the Air Quality Modelling Evaluation International Initiative Phase 4 (AQMEII4) which applies detailed dry deposition diagnostics to a range of air quality models and their deposition schemes. Dr. Baozhu Ge, from the Institute of Atmospheric Physics, Chinese Academy of Science, shared a presentation on the enhanced wet deposition of nitrogen induced by a landfalling typhoon over East Asia. Dr. Natsumi Kawano, from the Center for Environmental Science, in Saitama, Japan, gave a presentation on the impact of future climate change on tropospheric ozone in Japan using the WRF-CMAQ modeling system and the RCP8.5 scenario. Dr. Syuichi Itahashi, from the Central Research Institute of Electric Power Industry, Japan, shared a presentation on the changes in transboundary aerosol components due to the emission variations in East Asia. Dr. Xiao Tang, from the Institute of Atmospheric Physics, Chinese Academy of Science, gave a presentation on high-resolution aerosol data over China simulated by the NAQPMS modeling system and an inversed emission inventory. Dr. Naoyuki Yamashita, from the Forestry and Forest Products Research Institute, Japan, shared a presentation on the critical load of soil acidification and surface water eutrophication in the EANET Participating Countries, and Dr. Baiyao Xu, from Nanjing University, China, gave a presentation on the impacts of meteorological factors and ozone variation on crop yields in China related to the carbon neutrality objectives in 2060 and based on RegCM-Chem-YIBs.

Results from the MICS-Asia Phase IV working groups’ research activities and collaboration with international experts will allow to improve the scientific understanding of air quality issues in the region, but also provide informed knowledge for policy-making in Asia.

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Useful Resources

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Photo credits: featured photo of Dong Van, Viet Nam (2021) by Giles Freeman on Unsplash ; other photos: all rights reserved to EANET.

The Network Center for the EANET releases the Data Report 2024

Posted on by Aurélia Lemoine

 

17 April 2026

(This post has been updated from the original post, published on 20 February 2025).

Composed of data collected in 2024, comprising atmospheric deposition and air pollution monitoring data endorsed by the Scientific Advisory Committee (SAC) end of 2025, the “Data Report 2024” and the “Report of the Inter-laboratory Comparison Project 2024” have been uploaded in open access on the EANET website.

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What is EANET data?
Figure 1 – Location of acid deposition monitoring sites in 2019 (access the most recent sites’ information on the EANET Site Information page)

In the context of the resolution on promoting regional cooperation on air pollution to improve air quality globally, adopted in UNEA-6 in March 2024, the importance of referring to high-quality data for air quality management has never been greater.

Covering the area of 13 countries, from Irkutsk (Russia) in the North to Lombok (Indonesia) in the South, Ochiishi (Japan) in the East, and Mandalay (Myanmar) in the West, the EANET’s total surface is extremely wide and diverse.

Since 1998 (during the preparatory phase activities of the Network), the EANET has deployed monitoring stations in urban, rural, and remote locations to monitor atmospheric deposition and air pollution (in 2021, the EANET countries adopted an Annex defining monitored atmospheric environment-related substances). These monitoring sites gather high-quality data related to the deposition of major acidifying species and related chemical substances such as sulfate (SO42-), nitrate (NO3–), hydrogen (H+) in precipitation, sulfur dioxide (SO2), nitrogen dioxide (NO2), ozone (O3), and particulate matter (PM) in ambient air.

Monitoring data are used to evaluate the state of atmospheric deposition and air pollution as well as their impacts on ecosystems. Data on the atmospheric wet deposition of acidic components and other relevant pollutants have for example been used to understand the impacts of pollution on forest ecosystems, such as for the study led by EANET scientists in the dry evergreen forest of Sakaerat, in Nakhon Ratchasima Province, in northeastern Thailand.

Monitoring activities carried out in 2024 are presented in the Data Report 2024 (published in December 2025) and available in open access online.

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High-quality Data

Over the years, EANET scientists and monitoring officers have improved the collective knowledge and skills of the Network, among others on the quality assurance and quality control (QA/QC) of the data.

The Report of the Inter-laboratory Comparison Project is conducted each year among the EANET analytical laboratories, based on the quality assurance/quality control (QA/QC) programs of the Network. The objectives of this project are to recognize the analytical precision and accuracy of the measurement in each participating laboratory, to give further opportunities to improve the quality of the analysis and to improve the reliability of analytical data through the assessment of suitable analytical methods and techniques.

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Why download EANET data?

EANET data is available for non-commercial use for scientists, researchers, students, mobile app developers, etc… and anyone who wishes to understand the state of acid deposition and air pollution in East Asia over the last two decades.

By widely sharing data, EANET aims to improve global knowledge on atmospheric deposition and air pollution, as well as provide collaboration opportunities to improve public health and ecosystems’ restoration. In 2024 and 2025, over 135 peer-reviewed papers we published using the network’s long-term monitoring datasets.

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How to access EANET Data?

The “Data Report 2024” and the “Report of the Inter-laboratory Comparison Project 2024” are available in open access online, for non-commercial use only.

Users may also access customized data, such as hourly, weekly, and bi-weekly data on wet and dry deposition monitoring, by registering on the monitoring portal.

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Download the “Data Report 2024” and the “Report of the Inter-laboratory Comparison Project 2024”

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Photo credits: Monitoring sites map: all rights reserved to EANET; cover photo: Aerial view of trees during daytime by Luke Paris, (2019), free of copyrights.

The Network Center for the EANET releases the Data Report 2023

Posted on by Aurélia Lemoine

20 February 2025 – Niigata, Japan

(This post has been updated from the original post, published on 11 March 2024).

Composed of data collected in 2023, comprising acid deposition and air pollution monitoring data endorsed by the Scientific Advisory Committee (SAC) end of 2024, the “Data Report 2023” and the “Report of the Inter-laboratory Comparison Project 2023” have been uploaded in open access on the EANET website.

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What is EANET data?
Figure 1 – Location of acid deposition monitoring sites in 2019 (access the most recent sites’ information on the EANET Site Information page)

In the context of the resolution on promoting regional cooperation on air pollution to improve air quality globally, adopted in UNEA-6 in March 2024, the importance of referring to high-quality data for air quality management has never been greater.

Covering, in 2024, the area of 13 countries, from Irkutsk (Russia) in the North to Lombok (Indonesia) in the South, Ochiishi (Japan) in the East, and Mandalay (Myanmar) in the West, the EANET’s total surface is extremely wide and diverse.

Since 1998 (during the preparatory phase activities of the Network), the EANET has deployed monitoring stations in urban, rural, and remote locations to monitor acid deposition and air pollution (in 2021, the EANET countries adopted an Annex defining monitored atmospheric environment-related substances). These monitoring sites gather high-quality data related to the deposition of major acidifying species and related chemical substances such as sulfate (SO42-), nitrate (NO3–), hydrogen (H+) in precipitation, sulfur dioxide (SO2), nitrogen dioxide (NO2), ozone (O3), and particulate matter (PM) in ambient air.

Monitoring data are used to evaluate the state of acid deposition and air pollution as well as their impacts on ecosystems. Data on the atmospheric wet deposition of acidic components and other relevant pollutants have for example been used to understand the impacts of pollution on forest ecosystems, such as for the study led by EANET scientists in the dry evergreen forest of Sakaerat, in Nakhon Ratchasima Province, in northeastern Thailand.

Monitoring activities carried out in 2023 are presented in the Data Report 2023 (published in December 2024) and available in open access online.

.

High-quality Data

Over the years, EANET scientists and monitoring officers have improved the collective knowledge and skills of the Network, among others on the quality assurance and quality control (QA/QC) of the data.

The Report of the Inter-laboratory Comparison Project is conducted each year among the EANET analytical laboratories, based on the quality assurance/quality control (QA/QC) programs of the Network. The objectives of this project are to recognize the analytical precision and accuracy of the measurement in each participating laboratory, to give further opportunities to improve the quality of the analysis and to improve the reliability of analytical data through the assessment of suitable analytical methods and techniques.

.

Why download EANET data?

EANET data is available for non-commercial use for scientists, researchers, students, mobile app developers, etc… and anyone who wishes to understand the state of acid deposition and air pollution in East Asia over the last two decades.

By widely sharing data, EANET aims to improve global knowledge on acid deposition and air pollution, as well as provide collaboration opportunities to improve public health and ecosystems’ restoration.

.

How to access EANET Data?

The “Data Report 2023” and the “Report of the Inter-laboratory Comparison Project 2023” are available in open access online, for non-commercial use only.

Users may also access customized data, such as hourly, weekly, and bi-weekly data on wet and dry deposition monitoring, by registering on the monitoring portal.

.

Download the “Data Report 2023” and the “Report of the Inter-laboratory Comparison Project 2023”

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Photo credits: Monitoring sites map: all rights reserved to EANET; cover photo: Cloud fall in Japan by S. Tsuchiya, (2023), free of copyrights.

The Network Center for the EANET releases the Data Report 2022

Posted on by Aurélia Lemoine

Data Report

11 March 2024 – Niigata, Japan

(This post has been updated from the original post, published on 21 February 2023).

Composed of data collected in 2022, comprising acid deposition and air pollution monitoring data endorsed by the Scientific Advisory Committee (SAC) end of 2023, the “Data Report 2022” and the “Report of the Inter-laboratory Comparison Project 2022” have been uploaded in open access on the EANET website.

.

What is EANET data?
Figure 1 – Location of acid deposition monitoring sites in 2019 (access the most recent sites’ information on the EANET Site Information page)

In the context of the resolution on promoting regional cooperation on air pollution to improve air quality globally, adopted in UNEA-6 in March 2024, the importance of referring to high-quality data for air quality management has never been greater.

Covering, in 2024, the area of 13 countries, from Irkutsk (Russia) in the North to Lombok (Indonesia) in the South, Ochiishi (Japan) in the East, and Mandalay (Myanmar) in the West, the EANET’s total surface is extremely wide and diverse.

Since 1998 (during the preparatory phase activities of the Network), the EANET has deployed monitoring stations in urban, rural, and remote locations to monitor acid deposition and air pollution (in 2021, the EANET countries adopted an Annex defining monitored atmospheric environment-related substances). These monitoring sites gather high-quality data related to the deposition of major acidifying species and related chemical substances such as sulfate (SO42-), nitrate (NO3–), hydrogen (H+) in precipitation, sulfur dioxide (SO2), nitrogen dioxide (NO2), ozone (O3), and particulate matter (PM) in ambient air.

Monitoring data are used to evaluate the state of acid deposition and air pollution as well as their impacts on ecosystems. Data on the atmospheric wet deposition of acidic components and other relevant pollutants have for example been used to understand the impacts of pollution on forest ecosystems, such as for the study led by EANET scientists in the dry evergreen forest of Sakaerat, in Nakhon Ratchasima Province, in northeastern Thailand.

Monitoring activities carried out in 2021 are presented in the Data Report 2022 (published in December 2023) and available in open access online.

.

High-quality Data

Over the years, EANET scientists and monitoring officers have improved the collective knowledge and skills of the Network, among others on the quality assurance and quality control (QA/QC) of the data.

The Report of the Inter-laboratory Comparison Project is conducted each year among the EANET analytical laboratories, based on the quality assurance/quality control (QA/QC) programs of the Network. The objectives of this project are to recognize the analytical precision and accuracy of the measurement in each participating laboratory, to give further opportunities to improve the quality of the analysis, and to improve the reliability of analytical data through the assessment of suitable analytical methods and techniques.

.

Why download EANET data?

EANET data is available for non-commercial use for scientists, researchers, students, mobile app developers, etc… and anyone who wishes to understand the state of acid deposition and air pollution in East Asia over the last two decades.

By widely sharing data, EANET aims to improve the global knowledge on acid deposition, as well as to provide collaboration opportunities to improve public health and ecosystems’ restoration.

.

How to access EANET Data?

The “Data Report 2022” and the “Report of the Inter-laboratory Comparison Project 2022” are available in open access online, for non-commercial use only.

Users may also access customized data, such as hourly, weekly, and bi-weekly data on wet and dry deposition monitoring, by registering on the monitoring portal.

.

Download the “Data Report 2022” and the “Report of the Inter-laboratory Comparison Project 2022”

.

Photo credits: Monitoring sites map: all rights reserved to EANET; cover photo: lake during golden hour by Hendra Yudha Pratama, (2018), free of copyrights.

The Network Center for the EANET releases the Data Report 2021

Posted on by Aurélia Lemoine

21 February 2023 – Niigata, Japan

(This post has been updated from the original post, published on 25 March 2022).

Composed of acid deposition monitoring data gathered in 2021 and endorsed by the Scientific Advisory Committee (SAC) in 2022, the “Data Report 2021” and the “Report of the Inter-laboratory Comparison Project 2021” have been uploaded in open access on EANET website.

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What are EANET data?
Figure 1 – Location of acid deposition monitoring sites in 2019 (access the most recent sites’ information on the EANET Site Information page)

In the context of the recent adoption in March 2022 by governments at UNEA-5.2 of a key resolution supporting the establishment of a comprehensive science policy panel on the sound management of chemicals and waste and preventing pollution, the importance of referring to high-quality data has never been greater.

Covering in 2022 the area of 13 countries, from Irkutsk (Russia) in the North to Lombok (Indonesia) in the South, Ochiishi (Japan) in the East, and Mandalay (Myanmar) in the West, the Acid Deposition Monitoring Network in East Asia (EANET)’s total surface is extremely wide and diverse.

Since 1998 (during the preparatory phase activities of the Network), the EANET has deployed monitoring stations in urban, rural, and remote locations to monitor acid deposition. These monitoring sites gather high-quality data related to the deposition of major acidifying species and related chemical substances such as sulfate (SO₄²⁻), nitrate (NO₃⁻), hydrogen (H+) in precipitation, sulfur dioxide (SO₂), nitrogen dioxide (NO₂), ozone (O₃), and particulate matter (PM) in ambient air.

Monitoring data are used to evaluate the state of acid deposition as well as impacts on ecosystems. Data on the atmospheric wet deposition of acidic components and other relevant pollutants have for example been used to understand the impacts of pollution on forest ecosystems, such as for the study led by EANET scientists in the dry evergreen forest of Sakaerat, in Nakhon Ratchasima Province, in northeastern Thailand.

Monitoring activities carried out in 2021 are presented in the Data Report 2021 (published in December 2022) and available in open access online.

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High-quality Data

Over the years, EANET scientists and monitoring officers have improved the collective knowledge and skills of the Network, among others on the quality assurance and quality control (QA/QC) of the data.

The Report of the Inter-laboratory Comparison Project is conducted each year among the EANET analytical laboratories, based on the quality assurance/quality control (QA/QC) programs of the Network. The objectives of this project are to recognize the analytical precision and accuracy of the measurement in each participating laboratory, to give further opportunities to improve the quality of the analysis, and to improve the reliability of analytical data through the assessment of suitable analytical methods and techniques.

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Why download EANET data?

EANET data is available for non-commercial use for scientists, researchers, students, mobile app developers, etc… and anyone who wishes to understand the state of acid deposition and air pollution in East Asia over the last two decades.

By widely sharing data, EANET aims at improving the global knowledge on acid deposition, as well as providing collaboration opportunities to improve public health and ecosystems’ restoration.

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How to access EANET Data?

The “Data Report 2021” and the “Report of the Inter-laboratory Comparison Project 2021” are available in open access online, for non-commercial use only.

Users may also access customized data, such as hourly, weekly, and bi-weekly data on wet and dry deposition monitoring, by registering on the monitoring portal.

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Download the “Data Report 2021” and the “Report of the Inter-laboratory Comparison Project 2021”

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Photo credits: Monitoring sites map: all rights reserved to EANET; cover photo: Cloud fall in Japan by S. Tsuchiya, (2023), free of copyrights.