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.

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What is EANET data?

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 (SO₄^2-), 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.

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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 the global knowledge on acid deposition, as well as to provide collaboration opportunities to improve public health and ecosystems’ restoration.

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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.

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

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