Pan-Eurasian Experiment (PEEX): towards a holistic understanding of the feedbacks and interactions in the land–atmosphere–ocean–society continuum in the northern Eurasian region
Authors: Lappalainen Hanna K. , Kerminen Veli-Matti , Petäjä Tuukka , Kurten Theo , Baklanov Aleksander , Shvidenko Anatoly , Bäck Jaana , Vihma Timo , Alekseychik Pavel , Andreae Meinrat O. , Arnold Stephen R. , Arshinov Mikhail , Asmi Eija , Belan Boris , Bobylev Leonid , Chalov Sergey , Cheng Yafang , Chubarova Natalia , de Leeuw Gerrit , Ding Aijun , Dobrolyubov Sergey , Dubtsov Sergei , Dyukarev Egor , Elansky Nikolai , Eleftheriadis Kostas , Esau Igor , Filatov Nikolay , Flint Mikhail , Fu Congbin , Glezer Olga , Gliko Aleksander , Heimann Martin , Holtslag Albert A. M. , Hõrrak Urmas , Janhunen Juha , Juhola Sirkku , Järvi Leena , Järvinen Heikki , Kanukhina Anna , Konstantinov Pavel , Kotlyakov Vladimir , Kieloaho Antti-Jussi , Komarov Alexander S. , Kujansuu Joni , Kukkonen Ilmo , Duplissy Ella-Maria , Laaksonen Ari , Laurila Tuomas , Lihavainen Heikki , Lisitzin Alexander , Mahura Alexsander , Makshtas Alexander , Mareev Evgeny , Mazon Stephany , Matishov Dmitry , Melnikov Vladimir , Mikhailov Eugene , Moisseev Dmitri , Nigmatulin Robert , Noe Steffen M. , Ojala Anne , Pihlatie Mari , Popovicheva Olga , Pumpanen Jukka , Regerand Tatjana , Repina Irina , Shcherbinin Aleksei , Shevchenko Vladimir , Sipilä Mikko , Skorokhod Andrey , Spracklen Dominick V. , Su Hang , Subetto Dmitry A. , Sun Junying , Terzhevik Arkady Y. , Timofeyev Yuri , Troitskaya Yuliya , Tynkkynen Veli-Pekka , Kharuk Viacheslav I. , Zaytseva Nina , Zhang Jiahua , Viisanen Yrjö , Vesala Timo , Hari Pertti , Hansson Hans Christen , Matvienko Gennady G. , Kasimov Nikolai S. , Guo Huadong , Bondur Valery , Zilitinkevich Sergej , Kulmala Markku 
Published: November 2016

Abstract. The northern Eurasian regions and Arctic Ocean will very likely undergo substantial changes during the next decades. The Arctic–boreal natural environments play a crucial role in the global climate via albedo change, carbon sources and sinks as well as atmospheric aerosol production from biogenic volatile organic compounds. Furthermore, it is expected that global trade activities, demographic movement, and use of natural resources will be increasing in the Arctic regions. There is a need for a novel research approach, which not only identifies and tackles the relevant multi-disciplinary research questions, but also is able to make a holistic system analysis of the expected feedbacks. In this paper, we introduce the research agenda of the Pan-Eurasian Experiment (PEEX), a multi-scale, multi-disciplinary and international program started in 2012 (https://www.atm.helsinki.fi/peex/). PEEX sets a research approach by which large-scale research topics are investigated from a system perspective and which aims to fill the key gaps in our understanding of the feedbacks and interactions between the land–atmosphere–aquatic–society continuum in the northern Eurasian region. We introduce here the state of the art for the key topics in the PEEX research agenda and present the future prospects of the research, which we see relevant in this context.