Tag: Data

Third Meeting of the Lead Authors and Drafting Committee Members for the Fourth Periodic Report on the State of Acid Deposition in East Asia

Posted on by Aurélia Lemoine

6 August 2021 – Niigata, Japan

The Third Meeting of the Lead Authors (LA3) and Drafting Committee Members (DC3) for the Fourth Periodic Report on the State of Acid Deposition in East Asia (PRSAD4) was held from 4-5 August 2021, virtually.

PRSADs are published every five years as comprehensive scientific assessment reports describing the outcome of EANET’s monitoring activities.

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Participants from EANET’s Research Community

The meeting was organized online by the Network Center (NC) for the Acid Deposition Monitoring Network in East Asia (EANET), Niigata, Japan.

The Drafting Committee (DC) members of the PRSAD4, including the Lead Authors, participated in the meeting. The NC and the EANET Secretariat also joined the meeting to discuss the progress of the report.

Dr. Shiro Hatakeyama, the Director-General of the NC, delivered the Welcome remarks and Prof. Fan Meng, Chinese Research Academy of Environmental Sciences, delivered the Opening address as the Chairperson of the Drafting Committee.

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Review of the detailed structure of the PRSAD4

The detailed structure and contents from each chapter of the Regional Assessment of the Fourth Periodic Report on the State of Acid Deposition in East Asia were presented and discussed with all meeting participants.

Figure 1- Screenshots from some presentations and discussions during the Third Meeting of the Lead Authors and Drafting Committee Members for the Fourth Periodic Report on the State of Acid Deposition in East Asia

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Each chapter was presented by its lead author(s) including Dr. Erdenebat Eldev-Ochir (Mongolia) for Chapter 1, Dr. Sergey A. Gromov (Russia) for Chapter 2, Dr. Le Ngoc Cau (Viet Nam) and Prof. Kazuhide Matsuda (Japan) for Chapter 3, Dr. Park Jin-soo (Republic of Korea) and Prof. Fan Meng (China) for Chapter 4, Prof. Atsushi Kume (Japan) for Chapter 5 and Dr. Toshimasa Ohara (Japan) for Chapter 6.

Several other reports’ preparations were also discussed during the two-day meeting.

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Next Steps Before Publication

The PRSAD4 is scheduled to be shared as a final draft with EANET Participating Countries in August 2021, before being reviewed by the Twenty-First EANET Scientific Advisory Committee (SAC21) in October 2021 and finally approved by the Twenty-Third Intergovernmental Meeting of the EANET (IG23), in November 2021.

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Access and read the previous publications of the Periodic Report on the State of Acid Deposition in East Asia since 2006.

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Photo credits: Beppu, Japan, by Priscilla Du Preez, free of the copyright license; all other images: all rights reserved to EANET.

Second Lead Authors’ Meeting and Second Drafting Committee Meeting for the Fourth Periodic Report on the State of Acid Deposition in East Asia

Posted on by Aurélia Lemoine

9 March 2021 – Niigata, Japan

The Second Lead Authors’ Meeting (LA2) and the Second Drafting Committee Meeting (DC2) for the Fourth Periodic Report on the State of Acid Deposition in East Asia (PRSAD4) were held on 9 March 2021, virtually.

PRSADs are published every five years as comprehensive scientific assessment reports describing the outcome of EANET’s monitoring activities.

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Second Lead Authors’ Meeting and Second Drafting Committee Meeting

The meeting was organized online by the Network Center (NC) for the Acid Deposition Monitoring Network in East Asia (EANET), Niigata, Japan.

Drafting Committee (DC) members from 13 participating countries of the EANET, namely, Cambodia, China, Indonesia, Japan, Lao PDR, Malaysia, Mongolia, Myanmar, Philippines, Republic of Korea, Russia, Thailand, and Viet Nam, participated in the meeting. The NC, the EANET Secretariat, resource persons, and observers also joined the meeting to discuss the PRSAD4 preparation.

Dr. Shiro Hatakeyama, the Director General of the NC, delivered the opening remarks and Prof. Fan Meng, Chinese Research Academy of Environmental Sciences, delivered the opening address as the Chairperson of the Drafting Committee.

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Structure and Content of the Regional Assessment of the Fourth Periodic Report on the State of Acid Deposition in East Asia (PRSAD4) Review

The lead authors of the respective chapters, among which Dr. Sergey Gromov (Russia), Prof. Kazuhide Matsuda (Japan) Dr. Park Jin-soo (Republic of Korea), Dr. Keiichi Sato (Japan), Prof. Atsushi Kume (Japan) and Dr. Toshimasa Ohara (Japan) presented and discussed with participants the planned detailed structure and contents of the PRSAD4. Main discussions concerned the usage of data, calculation methods, and the process to follow to submit questions to each lead author and contributor.

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Additional Publications Discussions

The Drafting Committee’s Secretariat presented the Consideration on Further Process of Report Preparation, as well as the draft Summary of the Twentieth Anniversary of EANET, and the session discussed their content.

The Third Lead Author’s Meeting (LA3) and The third Drafting Committee Meeting (DC3) for PRSAD4 will take place virtually on August 4th and 5th 2021.

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Access and read the previous publications of the Periodic Report on the State of Acid Deposition in East Asia since 2006.

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Photo credits: Niigata by Tokyo Kohaku, free of the copyright license.

Scientific & Technological Research Papers from Participating Countries – Airborne Ammonia Concentrations in the Baikal Region

Posted on by Aurélia Lemoine

image of the Baikal lake to illustrate the research on airbone ammonia pollution in the Baikal region

1 April 2021 – Niigata, Japan

Scientific and Technological Research Papers from Participating Countries are research articles written by scientists from the EANET Participating Countries, in collaboration with the EANET Network Center, in Niigata, Japan. They are published in the EANET Science Bulletin and have required the use of EANET data.

Alisa Trifonova-Yakovleva and Sergey Gromov, from Russia, estimated airborne concentrations of ammonia (NH3) in the Baikal region by using measurements conducted at two EANET monitoring sites and compared with satellite data (Infrared Atmospheric Sounding Interferometer (IASI)).

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Sources and Impacts of Ammonia

Ammonia (NH3) is an important air pollutant that may eventually fall back to earth by means of wet and dry acid deposition. It is emitted both naturally and from anthropogenic sources such as animal husbandry, the use of nitrogen fertilizers, and biomass burning.

Atmospheric deposition containing NH3, aside from acidification impacts through the oxidizing to nitric acids in rain waters or on wet surfaces, cause also other negative effects on ecosystems, such as eutrophication and loss of biodiversity. In addition, when NH3 reacts with other atmospheric constituents, it forms particulate matter (e.g. PM2.5) triggering harmful impacts on human health.

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Airborne Ammonia Concentrations in the Baikal Region

For this research study, Alisa Trifonova-Yakovleva and Sergey Gromov used satellite data for better coverage and understanding of the air pollution at a wider regional level and ground-based measurements (filterpack method) at the Russian Litstvyanka and Mondy EANET stations from 2015 to 2017.

The goal of this study was to understand the constant levels of NH3 concentrations or their higher values of episodic nature in different locations within the Baikal Region, season-to-season.

More precise estimations of the regional airborne NH3 concentrations are indeed necessary to enhance the understanding of the scales and extension of detrimental impacts of air pollution and acid deposition on the environment and on human health.

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Discover the results of the study by reading the full article in the EANET Science Bulletin, Vol 5.

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This study was carried out in the framework of the Research Project AAAA-A20-120013190049-4 “Development of methods and technologies for monitoring of environmental pollution under the influence of transboundary pollutants transport (UNECE: EMEP, ICP IM) and acid deposition in East Asia (EANET)”.

Processing of satellite measurement data was performed as part of the research theme under the Plan of Basic Scientific Research of the State Academies of Sciences No. 0148-2019-0009, AAAA-A19-119022190173-2 “Climate changes and their consequences for the environment and the life of the population in Russia”.

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Photo credits: Baikal ice on sunset, by Sergey Pesterev, free of the copyright license.