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University of Helsinki: Helsinki, FI

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University of Helsinki

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University of Helsinki: Helsinki, FI

Education
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University of Helsinki

Works (35)

Heatwave reveals potential for enhanced aerosol formation in Siberian boreal forest

Environmental Research Letters
2024-01-01 | Journal article | Author
DOI: 10.1088/1748-9326/ad10d5
SOURCE-WORK-ID:

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WOSUID:

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EID:

2-s2.0-85182518151
Contributors: Olga Garmash; Ekaterina Ezhova; Mikhail Arshinov; Boris Belan; Anastasiia Lampilahti; Denis Davydov; Meri Räty; Diego Aliaga; Rima Baalbaki; Tommy Chan et al.
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University of Helsinki

Novel aerosol diluter - Size dependent characterization down to 1 nm particle size

Journal of Aerosol Science
2023-08 | Journal article | Author
DOI: 10.1016/j.jaerosci.2023.106180
SOURCE-WORK-ID:

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WOSUID:

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EID:

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Contributors: Markus Lampimäki; Rima Baalbaki; Lauri Reino Antero Ahonen; Frans Korhonen; Runlong Cai; Tommy Chan; Dominik Stolzenburg; Tuukka Petäjä; Juha Pekka Kangasluoma; Joonas Vanhanen et al.
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University of Helsinki

Genotypes exhibit no variation in precision foraging in mycorrhizal Norway spruce seedlings

Plant and Soil
2023-01 | Journal article | Author
DOI: 10.1007/s11104-022-05672-2
SOURCE-WORK-ID:

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WOSUID:

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EID:

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Contributors: Sannakajsa M. Velmala; Matti J. Salmela; Tommy Chan; Teemu Hölttä; Leena Hamberg; Risto Sievanen; Taina Pennanen
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University of Helsinki

The effect of COVID-19 restrictions on atmospheric new particle formation in Beijing

Atmospheric Chemistry and Physics
2022-09-19 | Journal article | Author
DOI: 10.5194/acp-22-12207-2022
SOURCE-WORK-ID:

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WOSUID:

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EID:

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Contributors: Chao Yan; Yicheng Shen; Dominik Stolzenburg; Lubna Dada; Ximeng Qi; Simo Hakala; Anu-Maija Sundström; Yishuo Guo; Antti Lipponen; Tom Valtteri Kokkonen et al.
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University of Helsinki

Measurement report

Atmospheric Chemistry and Physics
2022-08-31 | Journal article | Author
DOI: 10.5194/acp-22-11089-2022
SOURCE-WORK-ID:

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WOSUID:

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EID:

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Contributors: Benjamin Foreback; Lubna Dada; Kaspar Dällenbach; Chao Yan; Lili Wang; Biwu Chu; Ying Zhou; Tom Valtteri Kokkonen; Mona Kurppa; Rosaria E. Pileci et al.
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University of Helsinki

Investigation of new particle formation mechanisms and aerosol processes at Marambio Station, Antarctic Peninsula

Atmospheric Chemistry and Physics
2022-07-01 | Journal article | Author
DOI: 10.5194/acp-22-8417-2022
SOURCE-WORK-ID:

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WOSUID:

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EID:

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Contributors: Lauriane L. J. Quelever; Lubna Dada; Eija Asmi; Janne Lampilahti; Tommy Chan; Jonathan E. Ferrara; Gustavo E. Copes; German Perez-Fogwill; Luis Barreira; Minna Aurela et al.
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University of Helsinki

An evaluation of new particle formation events in Helsinki during a Baltic Sea cyanobacterial summer bloom

Atmospheric Chemistry and Physics
2022-05-17 | Journal article | Author
DOI: 10.5194/acp-22-6365-2022
SOURCE-WORK-ID:

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WOSUID:

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Contributors: Roseline C. Thakur; Lubna Dada; Lisa J. Beck; Lauriane L. J. Quelever; Tommy Chan; Marjan Marbouti; Xu-Cheng He; Carlton Xavier; Juha-Matti Oskari Sulo; Janne Lampilahti et al.
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University of Helsinki

Influence of Aerosol Chemical Composition on Condensation Sink Efficiency and New Particle Formation in Beijing

Environmental Science & Technology Letters
2022-05-10 | Journal article | Author
DOI: 10.1021/acs.estlett.2c00159
SOURCE-WORK-ID:

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WOSUID:

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EID:

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Contributors: Wei Du; Jing Cai; Feixue Zheng; Chao Yan; Ying Zhou; Yishuo Guo; Biwu Chu; Lei Yao; Liine Heikkinen; Xiaolong Fan et al.
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University of Helsinki

The 2018 European heatwave led to stem dehydration but not to consistent growth reductions in forests

Nature Communications
2022-01-10 | Journal article | Author
DOI: 10.1038/s41467-021-27579-9
SOURCE-WORK-ID:

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EID:

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PMID: 35013178
WOSUID:

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Contributors: Roberto L. Salomón; Richard L. Peters; Roman Zweifel; Ute G.W. Sass-Klaassen; Annemiek I. Stegehuis; Marko Smiljanic; Rafael Poyatos; Flurin Babst; Emil Cienciala; Patrick Fonti et al.
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University of Helsinki

The standard operating procedure for Airmodus Particle Size Magnifier and nano-Condensation Nucleus Counter

Journal of Aerosol Science
2022-01-01 | Journal article | Author
DOI: 10.1016/j.jaerosci.2021.105896
SOURCE-WORK-ID:

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EID:

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WOSUID:

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Contributors: Katrianne Lehtipalo; Lauri Reino Antero Ahonen; Rima Baalbaki; Juha-Matti Oskari Sulo; Tommy Chan; Tiia Laurila; Lubna Dada; Jonathan Duplissy; Elina Miettinen; Joonas Vanhanen et al.
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University of Helsinki

Measurement report

Atmospheric Chemistry and Physics
2021-12-07 | Journal article | Author
DOI: 10.5194/acp-21-17885-2021
SOURCE-WORK-ID:

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WOSUID:

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Contributors: Ying Zhou; Simo Hakala; Chao Yan; Yang Gao; Xiaohong Yao; Biwu Chu; Tommy Chan; Juha Pekka Kangasluoma; Shahzad Gani; Jenni Kontkanen et al.
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University of Helsinki

Rapid mass growth and enhanced light extinction of atmospheric aerosols during the heating season haze episodes in Beijing revealed by aerosol-chemistry-radiation-boundary layer interaction

Atmospheric Chemistry and Physics
2021-08-16 | Journal article | Author
DOI: 10.5194/acp-21-12173-2021
SOURCE-WORK-ID:

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WOSUID:

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EID:

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Contributors: Zhuohui Lin; Yonghong Wang; Feixue Zheng; Ying Zhou; Yishuo Guo; Zemin Feng; Chang Li; Yusheng Zhang; Simo Hakala; Tommy Chan et al.
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University of Helsinki

The Synergistic Role of Sulfuric Acid, Bases, and Oxidized Organics Governing New-Particle Formation in Beijing

Geophysical Research Letters
2021-04-16 | Journal article | Author
DOI: 10.1029/2020GL091944
SOURCE-WORK-ID:

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WOSUID:

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EID:

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Contributors: Chao Yan; Rujing Yin; Yiqun Lu; Lubna Dada; Dongsen Yang; Yueyun Fu; Jenni Kontkanen; Chenjuan Deng; Olga Garmash; Jiaxin Ruan et al.
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University of Helsinki

Is reducing new particle formation a plausible solution to mitigate particulate air pollution in Beijing and other Chinese megacities?

Faraday Discussions
2021-03-01 | Journal article | Author
DOI: 10.1039/D0FD00078G
SOURCE-WORK-ID:

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WOSUID:

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EID:

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Contributors: Markku Kulmala; Lubna Dada; Kaspar Dällenbach; Chao Yan; Dominik Stolzenburg; Jenni Kontkanen; Ekaterina Ezhova; Simo Hakala; Santeri Tuovinen; Tom Valtteri Kokkonen et al.
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University of Helsinki

Continuous and comprehensive atmospheric observations in Beijing

Big Earth Data
2020 | Journal article | Author
DOI: 10.1080/20964471.2020.1798707
SOURCE-WORK-ID:

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WOSUID:

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EID:

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Contributors: Yongchun Liu; Chao Yan; Zemin Feng; Feixue Zheng; Xiaolong Fan; Yusheng Zhang; Chang Li; Ying Zhou; Zhuohui Lin; Yishuo Guo et al.
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University of Helsinki

Unprecedented Ambient Sulfur Trioxide (SO3) Detection

Environmental Science & Technology Letters
2020-11-10 | Journal article | Author
DOI: 10.1021/acs.estlett.0c00615
SOURCE-WORK-ID:

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WOSUID:

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Contributors: Lei Yao; Xiaolong Fan; Chao Yan; Theo Christian Kurten; Kaspar Dällenbach; Chang Li; Yonghong Wang; Yishuo Guo; Lubna Dada; Matti P. Rissanen et al.
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University of Helsinki

Size-segregated particle number and mass concentrations from different emission sources in urban Beijing

Atmospheric Chemistry and Physics
2020-11-04 | Journal article | Author
DOI: 10.5194/acp-20-12721-2020
SOURCE-WORK-ID:

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WOSUID:

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EID:

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Contributors: Jing Cai; Biwu Chu; Lei Yao; Chao Yan; Liine Heikkinen; Feixue Zheng; Chang Li; Xiaolong Fan; Shaojun Zhang; Daoyuan Yang et al.
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University of Helsinki

Overview of measurements and current instrumentation for 1-10 nm aerosol particle number size distributions

Journal of Aerosol Science
2020-10 | Journal article | Author
DOI: 10.1016/j.jaerosci.2020.105584
SOURCE-WORK-ID:

c21c9489-9ca0-4f62-82aa-0037866e2015

WOSUID:

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Contributors: Juha Pekka Kangasluoma; Runlong Cai; Jingkun Jiang; Chenjuan Deng; Dominik Stolzenburg; Lauri Reino Antero Ahonen; Tommy Chan; Yueyun Fu; Changhyuk Kim; Tiia M. Laurila et al.
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University of Helsinki

Assessment of particle size magnifier inversion methods to obtain the particle size distribution from atmospheric measurements

Atmospheric Measurement Techniques
2020-09-15 | Journal article | Author
DOI: 10.5194/amt-13-4885-2020
SOURCE-WORK-ID:

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WOSUID:

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Contributors: Tommy Chan; Runlong Cai; Lauri Reino Antero Ahonen; Yiliang Liu; Ying Zhou; Joonas Vanhanen; Lubna Dada; Yan Chao; Yongchun Liu; Lin Wang et al.
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University of Helsinki

Leaf carbon and water status control stomatal and nonstomatal limitations of photosynthesis in trees

New Phytologist
2020-05 | Journal article | Author
DOI: 10.1111/nph.16436
SOURCE-WORK-ID:

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WOSUID:

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Contributors: Yann Louis Baptiste Salmon; Anna Matilda Lintunen; Alexia Dayet; Tommy Chan; Roderick Dewar; Timo Vesala; Teemu Holtta
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University of Helsinki

Propagating ice front induces gas bursts and ultrasonic acoustic emissions from freezing xylem

Tree Physiology
2020-02 | Journal article | Author
DOI: 10.1093/treephys/tpz123
SOURCE-WORK-ID:

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WOSUID:

000518553500004
Contributors: Anna Matilda Lintunen; Adriano Losso; Juho Aalto; Tommy Chan; Teemu Hölttä; Stefan Mayr
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University of Helsinki

Variation of size-segregated particle number concentrations in wintertime Beijing

Atmospheric Chemistry and Physics
2020-01-31 | Journal article | Author
DOI: 10.5194/acp-20-1201-2020
SOURCE-WORK-ID:

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WOSUID:

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Contributors: Y. Zhou; Lubna Dada; Yiliang Liu; Yueyun Fu; Juha Pekka Kangasluoma; Tommy Chan; C. Yan; B. Chu; Kaspar Dällenbach; Federico Bianchi et al.
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University of Helsinki

Scots Pine Stems as Dynamic Sources of Monoterpene and Methanol Emissions

Frontiers in Forests and Global Change
2020-01-28 | Journal article | Author
DOI: 10.3389/ffgc.2019.00095
SOURCE-WORK-ID:

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WOSUID:

001050943500001
Contributors: Anni Vanhatalo; Juho Aalto; Tommy Chan; Teemu Hölttä; Pasi Pekka Kolari; Kaisa Alina Rissanen; Kourosh Kabiri; Heidi Hellén; Jaana Kaarina Bäck
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University of Helsinki

Linking stem growth respiration to the seasonal course of stem growth and GPP of Scots pine

Tree Physiology
2018-09 | Journal article | Author
DOI: 10.1093/treephys/tpy040
SOURCE-WORK-ID:

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WOSUID:

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EID:

2-s2.0-85054768518
Contributors: Tommy Chan; Frank Berninger; Pasi Pekka Kolari; Eero Nikinmaa; Teemu Hölttä
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University of Helsinki

A steady-state stomatal model of balanced leaf gas exchange, hydraulics and maximal source–sink flux

Tree Physiology
2017 | Journal article | Author
DOI: 10.1093/treephys/tpx011
SOURCE-WORK-ID:

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WOSUID:

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EID:

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Contributors: Teemu Samuli Hölttä; Anna Matilda Lintunen; Tommy Chan; Aino Annikki Mäkelä-Carter; Eero Heikki Nikinmaa
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University of Helsinki

Dynamic variations in bark hydraulics - understanding whole tree processes and its linkage to bark hydraulic function and structure

Dissertationes Forestales
2016 | Dissertation or Thesis | Author
SOURCE-WORK-ID:

429f8433-bdb3-4349-83b3-aa7b6eabedd5

ISBN: 978-951-651-548-2
ISBN: 978-951-651-549-9
Contributors: Tommy Chan
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University of Helsinki

Stomatal and non-stomatal limitation of photosynthesis

Proceedings of 'The Centre of Excellence in Athmosphere Science (CoE ATM) - From Molecular and Biological Processes To the Total Climate' Annual Meeting 2016
2016 | Conference paper | Author
SOURCE-WORK-ID:

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Part of ISBN: 978-952-7091-62-3
Contributors: Yann Louis Baptiste Salmon; Anna Matilda Lintunen; Tommy Chan; Timo Veikko Vesala; Teemu Samuli Hölttä
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University of Helsinki

Separating water-potential induced swelling and shrinking from measured radial stem variations reveals a cambial growth and osmotic concentration signal

Plant, Cell and Environment
2016-02 | Journal article | Author
DOI: 10.1111/pce.12541
SOURCE-WORK-ID:

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WOSUID:

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EID:

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Contributors: Tommy Chan; Teemu Hölttä; Frank Berninger; Harri Mäkinen; Pekka Nöjd; Maurizio Mencuccini; Eero Nikinmaa
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University of Helsinki

Tree water relations can trigger monoterpene emissions from Scots pine stems during spring recovery

Biogeosciences
2015 | Journal article | Author
DOI: 10.5194/bg-12-5353-2015
SOURCE-WORK-ID:

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WOSUID:

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EID:

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Contributors: A. Vanhatalo; Tommy Chan; J. Aalto; Janne Korhonen; Pasi Pekka Kolari; T. Holtta; E. Nikinmaa; Jaana Kaarina Bäck
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University of Helsinki

Field and controlled environment measurements show strong seasonal acclimation in photosynthesis and respiration potential in boreal Scots pine

Frontiers in plant science
2014-12-12 | Journal article | Author
DOI: 10.3389/fpls.2014.00717
SOURCE-WORK-ID:

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WOSUID:

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EID:

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Contributors: Pasi Pekka Kolari; Tommy Chan; Albert Porcar-Castell; Jaana Kaarina Bäck; Eero Nikinmaa; Eija Juurola
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University of Helsinki

Dynamic relationship between the VOC emissions from a Scots pine stem and the tree water relations

Geophysical Research Abstracts
2013 | Conference paper | Author
SOURCE-WORK-ID:

c6fbc7c7-a6b6-45d2-a963-38ff03b34847
Contributors: Anni Vanhatalo; Tommy Chan; Juho Aalto; Pasi Pekka Kolari; Kaisa Alina Rissanen; Hannele Hakola; Teemu Hölttä; Jaana Kaarina Bäck
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University of Helsinki

Dynamic relationship between the VOC emissions from a Scots pine stem and the tree water relations

Proceedings of FCoE in 'Physics, Chemistry, Biology and Meteorology of Atmospheric Composition and Climate Change' Annual Meeting 2013
2013 | Conference paper | Author
SOURCE-WORK-ID:

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Contributors: Anni Vanhatalo; Tommy Chan; Juho Aalto; Janne Korhonen; Pasi Pekka Kolari; Kaisa Alina Rissanen; H Hakola; Teemu Hölttä; Eero Nikinmaa; Jaana Kaarina Bäck
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University of Helsinki

Seasonal dynamics of stem CO2 efflux and stem diameter growth

Proceedings of FCoE in 'Physics, Chemistry, Biology and Meteorology of Atmospheric Composition and Climate Change' Annual Meeting 2013
2013 | Conference paper | Author
SOURCE-WORK-ID:

b6ee38dc-4a30-498b-8e52-cc3561e14049

Part of ISBN: 978-952-5822-75-5
Contributors: Tommy Chan; Teemu Hölttä; Frank Berninger; Eero Nikinmaa
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University of Helsinki

Interpreting stem diameter growth during drought of Scots pine.

Proceedings of the Finnish Doctoral Programme in Atmospheric Composition and Climate Change ACCC Annual Meeting 9.-10.1.2012
2012 | Conference paper | Author
SOURCE-WORK-ID:

5905cd3c-7c9e-4b69-99f5-c6e47c0d4090

Part of ISBN: 978-952-5822-53-3
Contributors: Tommy Chan; Teemu Hölttä; Frank Berninger; Eero Nikinmaa
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University of Helsinki

Forest floor versus ecosystem CO2 exchange along boreal ecotone between upland forest and lowland mire

Tellus. Series B: Chemical and Physical Meteorology
2008 | Journal article | Author
DOI: 10.1111/j.1600-0889.2007.00328.x
SOURCE-WORK-ID:

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WOSUID:

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EID:

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Contributors: Boris Tupek; Kari Juhani Minkkinen; Pasi Pekka Kolari; Michael Starr; Tommy Chan; Jukka Alm; Timo Vesala; Jukka Laine; Eero Nikinmaa
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University of Helsinki
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