TY - JOUR

T1 - Overview: Recent advances in the understanding of the northern Eurasian environments and of the urban air quality in China – a Pan-Eurasian Experiment (PEEX) programme perspective

AU - Lappalainen, Hanna K.

AU - Petäjä, Tuukka

AU - Vihma, Timo

AU - Räisänen, Jouni

AU - Baklanov, Alexander

AU - Chalov, Sergey

AU - Esau, Igor

AU - Ezhova, Ekaterina

AU - Leppäranta, Matti

AU - Pozdnyakov, Dmitry

AU - Pumpanen, Jukka

AU - Andreae, Meinrat O.

AU - Arshinov, Mikhail

AU - Asmi, Eija

AU - Bai, Jianhui

AU - Bashmachnikov, Igor

AU - Belan, Boris

AU - Bianchi, Federico

AU - Biskaborn, Boris

AU - Boy, Michael

AU - Bäck, Jaana

AU - Cheng, Bin

AU - Chubarova, Natalia

AU - Duplissy, Jonathan

AU - Dyukarev, Egor

AU - Eleftheriadis, Konstantinos

AU - Forsius, Martin

AU - Heimann, Martin

AU - Juhola, Sirkku

AU - Konovalov, Vladimir

AU - Konovalov, Igor

AU - Konstantinov, Pavel

AU - Köster, Kajar

AU - Lapshina, Elena

AU - Lintunen, Anna

AU - Mahura, Alexander

AU - Makkonen, Risto

AU - Malkhazova, Svetlana

AU - Mammarella, Ivan

AU - Mammola, Stefano

AU - Buenrostro Mazon, Stephany

AU - Meinander, Outi

AU - Mikhailov, Eugene

AU - Miles, Victoria

AU - Myslenkov, Stanislav

AU - Orlov, Dmitry

AU - Paris, Jean-daniel

AU - Pirazzini, Roberta

AU - Popovicheva, Olga

AU - Pulliainen, Jouni

AU - Rautiainen, Kimmo

AU - Sachs, Torsten

AU - Shevchenko, Vladimir

AU - Skorokhod, Andrey

AU - Stohl, Andreas

AU - Suhonen, Elli

AU - Thomson, Erik S.

AU - Tsidilina, Marina

AU - Tynkkynen, Veli-pekka

AU - Uotila, Petteri

AU - Virkkula, Aki

AU - Voropay, Nadezhda

AU - Wolf, Tobias

AU - Yasunaka, Sayaka

AU - Zhang, Jiahua

AU - Qiu, Yubao

AU - Ding, Aijun

AU - Guo, Huadong

AU - Bondur, Valery

AU - Kasimov, Nikolay

AU - Zilitinkevich, Sergej

AU - Kerminen, Veli-matti

AU - Kulmala, Markku

N1 - Publisher Copyright: © Copyright:

PY - 2022/4/6

Y1 - 2022/4/6

N2 - The Pan-Eurasian Experiment (PEEX) Science Plan, released in 2015, addressed a need for a holistic system understanding and outlined the most urgent research needs for the rapidly changing Arctic-boreal region. Air quality in China, together with the long-range transport of atmospheric pollutants, was also indicated as one of the most crucial topics of the research agenda. These two geographical regions, the northern Eurasian Arctic-boreal region and China, especially the megacities in China, were identified as a "PEEX region". It is also important to recognize that the PEEX geographical region is an area where science-based policy actions would have significant impacts on the global climate. This paper summarizes results obtained during the last 5 years in the northern Eurasian region, together with recent observations of the air quality in the urban environments in China, in the context of the PEEX programme. The main regions of interest are the Russian Arctic, northern Eurasian boreal forests (Siberia) and peatlands, and the megacities in China. We frame our analysis against research themes introduced in the PEEX Science Plan in 2015. We summarize recent progress towards an enhanced holistic understanding of the land-atmosphere-ocean systems feedbacks. We conclude that although the scientific knowledge in these regions has increased, the new results are in many cases insufficient, and there are still gaps in our understanding of large-scale climate-Earth surface interactions and feedbacks. This arises from limitations in research infrastructures, especially the lack of coordinated, continuous and comprehensive in situ observations of the study region as well as integrative data analyses, hindering a comprehensive system analysis. The fast-changing environment and ecosystem changes driven by climate change, socio-economic activities like the China Silk Road Initiative, and the global trends like urbanization further complicate such analyses. We recognize new topics with an increasing importance in the near future, especially "the enhancing biological sequestration capacity of greenhouse gases into forests and soils to mitigate climate change"and the "socio-economic development to tackle air quality issues".

AB - The Pan-Eurasian Experiment (PEEX) Science Plan, released in 2015, addressed a need for a holistic system understanding and outlined the most urgent research needs for the rapidly changing Arctic-boreal region. Air quality in China, together with the long-range transport of atmospheric pollutants, was also indicated as one of the most crucial topics of the research agenda. These two geographical regions, the northern Eurasian Arctic-boreal region and China, especially the megacities in China, were identified as a "PEEX region". It is also important to recognize that the PEEX geographical region is an area where science-based policy actions would have significant impacts on the global climate. This paper summarizes results obtained during the last 5 years in the northern Eurasian region, together with recent observations of the air quality in the urban environments in China, in the context of the PEEX programme. The main regions of interest are the Russian Arctic, northern Eurasian boreal forests (Siberia) and peatlands, and the megacities in China. We frame our analysis against research themes introduced in the PEEX Science Plan in 2015. We summarize recent progress towards an enhanced holistic understanding of the land-atmosphere-ocean systems feedbacks. We conclude that although the scientific knowledge in these regions has increased, the new results are in many cases insufficient, and there are still gaps in our understanding of large-scale climate-Earth surface interactions and feedbacks. This arises from limitations in research infrastructures, especially the lack of coordinated, continuous and comprehensive in situ observations of the study region as well as integrative data analyses, hindering a comprehensive system analysis. The fast-changing environment and ecosystem changes driven by climate change, socio-economic activities like the China Silk Road Initiative, and the global trends like urbanization further complicate such analyses. We recognize new topics with an increasing importance in the near future, especially "the enhancing biological sequestration capacity of greenhouse gases into forests and soils to mitigate climate change"and the "socio-economic development to tackle air quality issues".

KW - AEROSOL OPTICAL-PROPERTIES

KW - ARCTIC SEA-ICE

KW - CLOUD CONDENSATION NUCLEI

KW - EMILIANIA-HUXLEYI BLOOMS

KW - GROSS PRIMARY PRODUCTIVITY

KW - LONG-TERM MEASUREMENTS

KW - NUMBER SIZE DISTRIBUTION

KW - PARTICLE FORMATION EVENTS

KW - TOWER OBSERVATORY ZOTTO

KW - VOLATILE ORGANIC-COMPOUNDS

UR - http://www.scopus.com/inward/record.url?scp=85128414330&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/54ed69d6-266f-37d4-9276-fd29cb13ea8f/

U2 - 10.5194/acp-22-4413-2022

DO - 10.5194/acp-22-4413-2022

M3 - Article

VL - 22

SP - 4413

EP - 4469

JO - Atmospheric Chemistry and Physics

JF - Atmospheric Chemistry and Physics

SN - 1680-7316

IS - 7

ER -