The Polar and Arctic atmospheric research (PANDA) is a sub-group of the Institute of Atmospheric and Earth System Research / Physics, at the University of Helsinki (

We are part of Finnish Flagship "Atmosphere and Climate Competence Center (ACCC)" Flagship (

Our research is and has been largely funded by  European Research Council (ERC-StG: GASPARCON – 714621), Academy of Finland (projects: 251427, 296628, 306853, 335844, 328290, 310627, 334514) and TEKES (“APCI-teknologian kaupallistaminen” & “APCI-teknologia CBRNE markkinalle”) together with numerous smaller sources of funding.

The group is led by Dr. Tuija Jokinen in collaboration with Assoc. Prof. Mikko Sipilä and Dr. Nina Sarnela. Information on individual group members can be found below.

Tuija Jokinen Ph.D., Group leader, Head of Unit for trace gases in situ measurements (CiGAS-UHEL) and aerosols in situ (CCC) topical centers in ACTRIS, Academy of Finland post-doctoral scholar.

I am a research coordinator at INAR/physics and my main topics include establishing, managing and running two ACTRIS calibration facilities for sub-10 nm particle measurements and for condensing trace gases that we also call aerosol precursors. I also lead a science project called the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) project, that takes me and my team drifting in ice for months this year. My heart beats for field campaigns in the Arctic and Polar regions. My expertise is in chemical ionization mass spectroscopic (CIMS) measurements, data analysis and in science outreach.

Associate Prof. Mikko Sipilä is the head of Värriö sub-arctic research station and SMEAR I station located in Salla, eastern Lapland ( He is also the deputy leader of the Panda group. Mikko works with Arctic and Antarctic polar atmospheric research focusing on sea - land ecosystem - atmosphere interactions mainly from aerosol formation point of view. He also investigates sub-arctic boreal forest - atmosphere interactions and the interference of anthropogenic air pollution. Furthermore, he collects data on boreal fauna, including birds and apex predators such as wolverine, wolf, bobcat and bear.ä

Nina Sarnela Ph.D., Postdoctoral researcher working for trace gases in situ measurements (CiGAS-UHEL) and aerosols in situ (CCC) topical centers in ACTRIS, deputy leader of the Panda group.

I’m experienced in in-situ gas and particle measurements, especially chemical ionization high resolution mass spectrometry, in field, chamber, and laboratory measurements. I’m interested in developing better instruments, operation procedures and methods of analysis for atmospheric in-situ measurements. I’m curious about Arctic particle formation and atmospheric oxidation products and their role in nucleation.

I am a postdoctoral researcher and multidisciplinary instrumental scientist. I got my PhD from Chemistry, University of Helsinki at end of 2013. I did my PostDoc in UCSD, CA, USA and currently I am doing my PostDoc here in Panda group. My work is often related to mass spectrometry instrumental developments and experimental (lab and field) research of newly formed aerosol particles and their chemical composition. I design, build and fix stuff from V8-engines to "nanometer” size range stuff. Recently, I have been building a big laminar flow tube in the laboratory and studying some explosives behavior in the flow tube under different conditions.

Kimmo Neitola, Ph.D., is station manager of the Värriö sub-arctic research station and SMEAR I station located in Salla, eastern Lapland. He works as a post-doctoral researcher.

Kimmo has been working mainly with nucleation studies in laboratory, as well as in the field. He has been working on Arctic and Antarctic atmospheric science. He is mostly running atmospheric measurements at the SMEAR I station, but also collects fenological data, including information of birds, berries, etc.

Lead Investigator of the Project “Molecular Steps of New Particle Formation in the Arctic Atmosphere- Long Term Measurements (NPF ARCTIC-II). My research focus is on the New Particle formation (NPF) processes through biogenic precursors in Arctic region. I aim to increase the understanding of the sources of biogenic volatile organic compounds in High Arctic and their implications on new particle formation. The objectives of my research involves Field campaigns in the Svalbard region using CIMS, Neutral cluster Air Ion Spectrometer and VOC flux chambers. My first love is always the Polar regions, however, I am also interested in carrying out studies elsewhere with a focus on biogenic precursors influencing NPF.

Xu-Cheng He is mainly working on chemical reactions and new-particle formation processes introduced by iodine-containing species. His current research focus is the formation mechanisms of iodic acid (HIO3) and the significance of HIO3 in global new-particle formation processes compared to other nucleating species, such as sulfuric acid and oxidized organics.

I am a CLOUD-Train PhD student at INAR and my research topic is investigating marine aerosol formation from DMS oxidation with OH radicals. I conduct my research at the Cosmics Leaving Outdoor Droplets (CLOUD) chamber at CERN, Switzerland and compare my results with ambient atmospheric observations.


My research topic is focusing on polar atmosphere and the chemical composition of ions above the boreal forest. I mainly work with mass spectrometers and my passion is working in the field, investigating prestine places and their atmosphere.

Doctoral Student at INAR for Investigating the chemistry of aerosol precursors in cold environments: From laboratory experiments to remote polar field observations.

Research on the chemical origin of nucleation in the antarctic peninsula and central arctic ocean. Expert on Mass Spectrometry measurements for chemical identification and quantification of gas-phase molecules and ions, precursor of aerosols.

Matt Boyer is a PhD student studying aerosol processes in polar environments. He is interested in the link between newly formed particles and their growth to CCN relevant sizes, and he enjoys making measurements in the field.

Marjan Marbouti is currently PhD student of geophysics at the Institute for Atmosphere and Earth System Research (INAR) of the University of Helsinki. Her research focuses on radar and optical remote sensing. Her research is aimed at developing new methods to investigate sea ice deformation, topography and classification using synthetic aperture radar interferometry (InSAR). She also work on relationships linking satellite-retrieved ocean color data (chlorophyll-a and primary production) with atmospheric components in the Arctic.

I’m a master’s student in aerosol physics. My interest is in the role of iodine species in new particle formation in the Arctic. I mostly use chemical ionization mass spectrometry in my work.

I am a research assistant working on my Master's thesis project which is about new particle formation and its connection to VOC-emissions in polar regions, particularly at Ny-Ålesund.  My research interests are in the polar regions and the ocean-ice-atmosphere interactions there. I very much enjoy working in the field, setting up and maintaining instruments and doing measurements in situ. I've been involved with maintaining the measurements done in Ny Ålesund in Svalbard.