Theses
[PhD] Janne Hakkarainen: On state and parameter estimation in chaotic systems, PhD thesis, Lappeenranta University of Technology, 2013. Link
[MSc] Janne Hakkarainen: Data-assimilaatiomenetelmistä ja niiden soveltamisesta ROSE-kemiakuljetusmalliin, Master's thesis, University of Helsinki, 2009.
Link
[BSc] Janne Hakkarainen: Laplace-operaattorin ominaisarvoista ja ensimmäisen ominaisarvon minimiperiaate, Bachelor's thesis, University of Helsinki, 2009.
Link
Book
Submitted
[*] Iolanda Ialongo et al.: Unveiling Nitrogen Oxide Emissions from Open-Pit Copper Mines through Satellite Observations, submitted to Environmental Research Letters, 2024.
[*] Janne Hakkarainen, Zenith Purisha, Neus Sabater, Monika Szeląg, Samuli Siltanen and Antti Solonen: Iterative Filtering and Smoothing with Optical Flow Prediction Models, submitted to SIAM Journal on Imaging Sciences, 2024.
[*] Janne Hakkarainen, Iolanda Ialongo, Daniel J. Varon, Gerrit Kuhlmann, and Maarten C. Krol: Linear Integrated Mass Enhancement: A method for estimating hotspot emission rates from space-based plume observations, submitted to Remote Sensing of Environment, 2024.
Journal publications
[41] Lu Yao, Dongxu Yang, Zhe Jiang, Yi Liu, Lixu Chen, Longfei Tian, Janne Hakkarainen, Zhaonan Cai, Jing Wang, Xiaoyu Ren: Towards Supporting Satellite Design through the Top-down Approach: A General Model for Assessing the Ability of Future Satellite Missions to Quantify Point Source Emissions, Remote Sensing, doi:10.3390/rs16234503, 2024. Link
[40] Santaren, D., Hakkarainen, J., Kuhlmann, G., Koene, E., Chevallier, F., Ialongo, I., Lindqvist, H., Nurmela, J., Tamminen, J., Amoros, L., Brunner, D., and Broquet, G.: Benchmarking data-driven inversion methods for the estimation of local CO2 emissions from XCO2 and NO2 satellite images, Atmos. Meas. Tech., doi:10.5194/amt-2023-241, 2024. Link
[39] Janne Hakkarainen, Gerrit Kuhlmann, Erik Koene, Diego Santaren, Sandro Meier, Maarten C. Krol, Bart J.H. van Stratum, Iolanda Ialongo, Frédéric Chevallier, Johanna Tamminen, Dominik Brunner, Grégoire Broquet: Analyzing nitrogen dioxide to nitrogen oxide scaling factors for data-driven satellite-based emission estimation methods: a case study of Matimba/Medupi power stations in South Africa, Atmospheric Pollution Research, Volume 15, Issue 7, doi:10.1016/j.apr.2024.102171, 2024. Link
[38] Kuhlmann, G., Koene, E., Meier, S., Santaren, D., Broquet, G., Chevallier, F., Hakkarainen, J., Nurmela, J., Amorós, L., Tamminen, J., and Brunner, D.: The ddeq Python library for point source quantification from remote sensing images (version 1.0), Geosci. Model Dev., 17, 4773–4789, doi:10.5194/gmd-17-4773-2024, 2024. Link
[37] Ialongo, I., Bun, R., Hakkarainen, J., Virta, H., and Oda, T. Satellites capture socioeconomic disruptions during the 2022 full-scale war in Ukraine. Sci Rep 13, 14954 (2023). doi:10.1038/s41598-023-42118-w. Link
[36] Teemu Härkönen, Anu-Maija Sundström, Johanna Tamminen, Janne Hakkarainen, Esa Vakkilainen and Heikki Haario: Uncertainty Quantification by Gaussian Random Fields for Point-Like Emissions from Satellite Observations, International Journal for Uncertainty Quantification, doi:10.1615/Int.J.UncertaintyQuantification.2023044906, 2023. Link
[35] Tsuruta A, Kivimäki E, Lindqvist H, Karppinen T, Backman L, Hakkarainen J, Schneising O, Buchwitz M, Lan X, Kivi R, Chen H, Buschmann M, Herkommer B, Notholt J, Roehl C, Té Y, Wunch D, Tamminen J, Aalto T. CH4 Fluxes Derived from Assimilation of TROPOMI XCH4 in CarbonTracker Europe-CH4: Evaluation of Seasonality and Spatial Distribution in the Northern High Latitudes. Remote Sensing, 15(6):1620, doi:10.3390/rs15061620, 2023. Link
[34] Janne Hakkarainen, Iolanda Ialongo, Tomohiro Oda, Monika E. Szeląg, Christopher W. O’Dell, Annmarie Eldering, and David Crisp: Building a bridge: Characterizing major anthropogenic point sources in the South African Highveld region using OCO-3 carbon dioxide Snapshot Area Maps and Sentinel-5P/TROPOMI nitrogen dioxide columns, Environmental Research Letters, vol. 18, no. 3, doi:10.1088/1748-9326/acb837, 2023. Link
[33] Dongxu Yang, Janne Hakkarainen, Yi Liu, Iolanda Ialongo, Zhaonan Cai, and Johanna Tamminen: Detection of anthropogenic CO2 emission signatures with TanSat CO2 and with Copernicus Sentinel-5 Precursor (S5P) NO2 measurements: first results, Advances in Atmospheric Sciences, doi:10.1007/s00376-022-2237-5, 2022. Link
[32] Janne Hakkarainen, Iolanda Ialongo, Erik Koene, Monika E. Szeląg, Johanna Tamminen, Gerrit Kuhlmann, Dominik Brunner: Analyzing Local Carbon Dioxide and Nitrogen Oxide Emissions From Space Using the Divergence Method: An Application to the Synthetic SMARTCARB Dataset, Frontiers in Remote Sensing, vol 3, 2022, doi:10.3389/frsen.2022.878731 Link
[31] Jääskeläinen, E., Manninen, T., Hakkarainen, J., and Tamminen, J.: Filling gaps of black-sky surface albedo of the Arctic sea ice using gradient boosting and brightness temperature data,
International Journal of Applied Earth Observation and Geoinformation, 107,102701 (2022). doi:10.1016/j.jag.2022.102701. Link
[30] Boesch, Hartmut, Yi Liu, Johanna Tamminen, Dongxu Yang, Paul I. Palmer, Hannakaisa Lindqvist, Zhaonan Cai, Ke Che, Antonio Di Noia, Liang Feng, Janne Hakkarainen, Iolanda Ialongo, Nikoleta Kalaitzi, Tomi Karppinen, Rigel Kivi, Ella Kivimäki, Robert J. Parker, Simon Preval, Jing Wang, Alex J. Webb, Lu Yao, and Huilin Chen: Monitoring Greenhouse Gases from Space. Remote Sensing, Volume 13(14), doi:10.3390/rs13142700, 2021. Link
[29] Iolanda Ialongo, Nadezhda Stepanova, Janne Hakkarainen, Henrik Virta, and Daria Gritsenko: Satellite-based estimates of nitrogen oxide and methane emissions from gas flaring and oil production activities in Sakha Republic, Russia, Atmospheric Environment: X, Volume 11, doi:10.1016/j.aeaoa.2021.100114, 2021. Link
[28] Janne Hakkarainen, Monika E. Szeląg, Iolanda Ialongo, Christian Retscher, Tomohiro Oda, and David Crisp: Analyzing nitrogen oxides to carbon dioxide emission ratios from space: A case study of Matimba Power Station in South Africa, Atmospheric Environment: X, Volume 10, doi:10.1016/j.aeaoa.2021.100110, 2021. Link
[27] Ramona Maraia, Sebastian Springer, Heikki Haario, Janne Hakkarainen, and Eero Saksman: Parameter estimation for stochastic chaotic systems. International Journal for Uncertainty Quantification, doi:10.1615/Int.J.UncertaintyQuantification.2020032807, 2020. Link
[26] Kivimäki, Ella; Lindqvist, Hannakaisa; Hakkarainen, Janne; Laine, Marko; Sussmann, Ralf; Tsuruta, Aki; Detmers, Rob; Deutscher, Nicholas M.; Dlugokencky, Edward J.; Hase, Frank; Hasekamp, Otto; Kivi, Rigel; Morino, Isamu; Notholt, Justus; Pollard, David F.; Roehl, Coleen; Schneider, Matthias; Sha, Mahesh K.; Velazco, Voltaire A.; Warneke, Thorsten; Wunch, Debra; Yoshida, Yukio; Tamminen, Johanna. "Evaluation and Analysis of the Seasonal Cycle and Variability of the Trend from GOSAT Methane Retrievals." Remote Sens. 11, no. 7: 882, doi:10.3390/rs11070882, 2019. Link
[25] Janne Hakkarainen, Iolanda Ialongo, Shamil Maksyutov, and David Crisp: Analysis of Four Years of Global XCO2 Anomalies as Seen by Orbiting Carbon Observatory-2, Remote Sens. 11, no. 7: 850, doi:10.3390/rs11070850, 2019. Link
[24] Janne Hakkarainen, Zenith Purisha, Antti Solonen, and Samuli Siltanen: Undersampled dynamic X-ray tomography with dimension reduction Kalman filter. IEEE Transactions on Computational Imaging, doi:10.1109/TCI.2019.2896527. Link – arXiv:1805.00871
[23] Wang, S., Zhang, Y., Hakkarainen, J., Ju, W., Liu, Y., Jiang, F., and He, W. (2018). Distinguishing anthropogenic CO2 emissions from different energy intensive industrial sources using OCO‐2 observations: a case study in northern China. Journal of Geophysical Research: Atmospheres, 123, doi:10.1029/2018JD029005. Link
[22] Levelt, P. F., Joiner, J., Tamminen, J., Veefkind, J. P., Bhartia, P. K., Stein Zweers, D. C., Duncan, B. N., Streets, D. G., Eskes, H., van der A, R., McLinden, C., Fioletov, V., Carn, S., de Laat, J., DeLand, M., Marchenko, S., McPeters, R., Ziemke, J., Fu, D., Liu, X., Pickering, K., Apituley, A., González Abad, G., Arola, A., Boersma, F., Chan Miller, C., Chance, K., de Graaf, M., Hakkarainen, J., Hassinen, S., Ialongo, I., Kleipool, Q., Krotkov, N., Li, C., Lamsal, L., Newman, P., Nowlan, C., Suleiman, R., Tilstra, L. G., Torres, O., Wang, H., and Wargan, K.: The Ozone Monitoring Instrument: overview of 14 years in space, Atmos. Chem. Phys., 18, 5699-5745, doi:10.5194/acp-18-5699-2018, 2018. Link
[21] A. Eldering, P. O. Wennberg, D. Crisp, D. S. Schimel, M. R. Gunson, A. Chatterjee, J. Liu, F. M. Schwandner, Y. Sun, C. W. O’Dell, C. Frankenberg, T. Taylor, B. Fisher, G. B. Osterman, D. Wunch2, J. Hakkarainen, J. Tamminen, B. Weir: The Orbiting Carbon Observatory-2 early science investigations of regional carbon dioxide fluxes, Science, Vol. 358, Issue 6360, doi:10.1126/science.aam5745, 2017. Link
[20] Tsuruta, A., Aalto, T., Backman, L., Hakkarainen, J., van der Laan-Luijkx, I. T., Krol, M. C., Spahni, R., Houweling, S., Laine, M., Dlugokencky, E., Gomez-Pelaez, A. J., van der Schoot, M., Langenfelds, R., Ellul, R., Arduini, J., Apadula, F., Gerbig, C., Feist, D. G., Kivi, R., Yoshida, Y., and Peters, W.: Global methane emission estimates for 2000–2012 from CarbonTracker Europe-CH4 v1.0, Geosci. Model Dev., 10, 1261-1289, doi:10.5194/gmd-10-1261-2017, 2017. Link
[19] Sofieva, V. F., Ialongo, I., Hakkarainen, J., Kyrölä, E., Tamminen, J., Laine, M., Hubert, D., Hauchecorne, A., Dalaudier, F., Bertaux, J.-L., Fussen, D., Blanot, L., Barrot, G., and Dehn, A.: Improved GOMOS/Envisat ozone retrievals in the upper troposphere and the lower stratosphere, Atmos. Meas. Tech., 10, 231-246, doi:10.5194/amt-10-231-2017, 2017. Link
[18] Mudassar Abbas, Alexander Ilin, Antti Solonen, Janne Hakkarainen, Erkki Oja and Heikki Järvinen (2016), Empirical evaluation of Bayesian optimization in parametric tuning of chaotic systems, Int. J. Uncertainty Quantification, Volume 6, Issue 6, pages 467-485, doi:Int.J.UncertaintyQuantification.2016016645. Link
[17] Hakkarainen, J., I. Ialongo, and J. Tamminen (2016), Direct space-based observations of anthropogenic CO2 emission areas from OCO-2, Geophys. Res. Lett., 43, doi:10.1002/2016GL070885. Link
[16] Tukiainen, S., J. Railo, M. Laine, J. Hakkarainen, R. Kivi, P. Heikkinen, H. Chen, and J. Tamminen (2016), Retrieval of atmospheric CH4 profiles from Fourier transform infrared data using dimension reduction and MCMC, J. Geophys. Res. Atmos., 121, doi:10.1002/2015JD024657. Link
[15] G. Bernhard, I. Ialongo, J.-U. Grooß, J. Hakkarainen, B. Johnsen, G.L. Manney, V. Fioletov, A. Heikkilä, and K. Lakkala, 2016: Ozone and UV radiation [in "State of the Climate in 2015"]. Bull. Amer. Meteor. Soc., 97 (8), S152–S153. Link
[14] Antti Solonen, Tiangang Cui, Janne Hakkarainen, and Youssef Marzouk: On dimension reduction in Gaussian filters, Inverse Problems, Volume 32, Number 4, 2016. Link – arXiv:1508.06452
[13] Ialongo, I., Hakkarainen, J., Kivi, R., Anttila, P., Krotkov, N. A., Yang, K., Li, C., Tukiainen, S., Hassinen, S., and Tamminen, J.: Comparison of operational satellite SO2 products with ground-based observations in northern Finland during the Icelandic Holuhraun fissure eruption, Atmos. Meas. Tech., 8, 2279-2289, doi:10.5194/amt-8-2279-2015, 2015. Link
[12] Heikki Haario, Leonid Kalachev, and Janne Hakkarainen: Generalized correlation integral vectors: A distance concept for chaotic dynamical systems, Chaos 25, 063102 (2015), doi: 10.1063/1.4921939. Link
[11] Soares, J., Sofiev, M., Hakkarainen, J., Uncertainties of wild-land fires emission in AQMEII phase 2 case study, Atmospheric Environment (2015), doi: 10.1016/ j.atmosenv.2015.01.068. Link
[10] Solonen, A., Hakkarainen, J., Ilin, A., Abbas, M., and Bibov, A.: Tuning the model error covariance matrix in extended Kalman filtering, Nonlin. Processes Geophys., 21, 919-927, doi:10.5194/npg-21-919-2014, 2014. Link
[9] Ialongo, I., Hakkarainen, J., Hyttinen, N., Jalkanen, J.-P., Johansson, L., Boersma, K. F., Krotkov, N., and Tamminen, J.: Characterization of OMI tropospheric NO2 over the Baltic Sea region, Atmos. Chem. Phys., 14, 7795-7805, doi:10.5194/acp-14-7795-2014, 2014. Link
[8] Sofiev, M., Vankevich, R., Ermakova, T., and Hakkarainen, J.: Global mapping of maximum emission heights and resulting vertical profiles of wildfire emissions, Atmos. Chem. Phys., 13, 7039-7052, doi:10.5194/acp-13-7039-2013, 2013. Link
[7] Janne Hakkarainen, Antti Solonen, Alexander Ilin, Jouni Susiluoto, Marko Laine, Heikki Haario, and Heikki Järvinen.:A dilemma of the uniqueness of weather and climate model closure parameters, Tellus A, 65(20147):8, 2013. doi: 10.3402/tellusa.v65i0.20147. Link
[6] Hakkarainen, J., Tamminen, J., Moore, J. R., and Kyrölä, E.: Direct comparisons of GOMOS and SAGE III NO3 vertical profiles, Atmos. Meas. Tech., 5, 1841-1846, doi:10.5194/amt-5-1841-2012, 2012. Link
[5] Antti Solonen, Heikki Haario, Janne Hakkarainen, Harri Auvinen, Idrissa Amour, and Tuomo Kauranne: Variational Ensemble Kalman Filtering Using Limited Memory BFGS, Electron. Trans. Numer. Anal., 39 (2012), pp. 271–285. Link
[4] Hakkarainen, J., Ilin, A., Solonen, A., Laine, M., Haario, H., Tamminen, J., Oja, E., and Järvinen, H.: On closure parameter estimation in chaotic systems, Nonlin. Processes Geophys., 19, 127-143, doi:10.5194/npg-19-127-2012, 2012. Link
[3] T. Mielonen, H. Portin, M. Komppula, A. Leskinen, J. Tamminen, I. Ialongo, J. Hakkarainen,
K.E.J. Lehtinen, A. Arola, Biomass burning aerosols observed in Eastern Finland during the Russian
wildfires in summer 2010 -- Part 2: Remote sensing, Atmospheric Environment, Volume 47, February 2012, Pages 279-287, ISSN 1352-2310, 10.1016/j.atmosenv.2011.07.016. Link
[2] Kerminen, V.-M., Niemi, J. V., Timonen, H., Aurela, M., Frey, A., Carbone, S., Saarikoski, S., Teinilä, K., Hakkarainen, J., Tamminen, J., Vira, J., Prank, M., Sofiev, M., and Hillamo, R.: Characterization of a volcanic ash episode in southern Finland caused by the Grimsvötn eruption in Iceland in May 2011, Atmos. Chem. Phys., 11, 12227-12239, doi:10.5194/acp-11-12227-2011, 2011. Link
[1] Kroon, M., J. F. de Haan, J. P. Veefkind, L. Froidevaux, R. Wang, R. Kivi, and J. J. Hakkarainen (2011), Validation of operational ozone profiles from the Ozone Monitoring Instrument, J. Geophys. Res., 116, D18305, doi:10.1029/2010JD015100.
Link
Proceeding publications
[9] Laia Amorós, Janne Hakkarainen, Hannakaisa Lindqvist: Towards a machine learning model to predict carbon dioxide fluxes from space, Proceedings of the 2023 conference on Big Data from Space (BiDS’23), Publications Office of the European Union, 2023, doi:10.2760/46796. Link
[8] Hartmut Boesch, Yi Liu, Paul I. Palmer, Johanna Tamminen, Jasdeep S. Anand, Zhaonan Cai, Ke Che, Huilin Chen, Xi Chen, Liang Feng, Janne Hakkarainen, Pauli Heikkinen, Nikoleta Kalaitzi, Rigel Kivi, Robert Parker, Peter Somkuti, Jing Wang, Alex Webb, Dongxu Yang, Lu Yao, You Yi, Monitoring Greenhouses Gases over China Using Space-Based Observations, Journal of Geodesy and Geoinformation Science, 2020, 3(4), doi:10.11947/j.JGGS.2020.0402. Link
[7] Haario H., Hakkarainen J., Maraia R., Springer S. (2019) Correlation Integral Likelihood for Stochastic Differential Equations. In: Wood D., de Gier J., Praeger C., Tao T. (eds) 2017 MATRIX Annals. MATRIX Book Series, vol 2. Springer, Cham. Doi: 10.1007/978-3-030-04161-8_3. Link - Link
[6] V.F. Sofieva, J. Tamminen, J. Hakkarainen, E. Kyrölä, M. Sofiev, G. Stiller, A. Laeng, T. von Clarmann, S. Lossow, M. Weber, N. Rahpoe, A. Rozanov, D. Degenstein, A. Bourassa, K. A. Walker, D. Hubert, M. van Roozendael, and C. Zehner: Ozone structure and variability in the upper troposphere and lower stratosphere as seen by Envisat and ESA Third-party mission limb profiling instruments, Proceedings of Advances in Atmospheric Science and Applications, ESA SP-735, 2015.
[5] Janne Hakkarainen, Iolanda Ialongo, Viktoria Sofieva, Marko Laine, Johanna Tamminen, and Erkki Kyrölä: Validation and Alternative Retrievals of GOMOS Ozone Profiles in the UTLS Altitude Region, Proceedings of Advances in Atmospheric Science and Applications, ESA SP-735, 2015. Link
[4] Julius Vira, Marje Prank, Janne Hakkarainen, and Mikhail Sofiev: An Assessment of the Emission and Dispersion of Volcanic Ash and Sulphur Dioxide in the Recent Eruptions in Iceland, Air Pollution Modeling and its Application XXII, Springer Netherlands, pp. 297-301, doi:10.1007/978-94-007-5577-2_50, 2014. Link
[3] Janne Hakkarainen, Marko Laine, and Johanna Tamminen: GOMOS one-step retrieval algorithm, Remote Sensing of Clouds and the Atmosphere XVIII, Proceedings of SPIE Volume 8890, 2013, doi:10.1117/12.2027109. Link
[2] Joana Soares, Janne Hakkarainen, Tatjana Ermakova, and Mikhail Sofiev: On a Contribution of Wild-Land Fires on Atmospheric Composition in Arid Regions, Air Pollution Modeling and its Application XXI, Springer Netherlands, pp. 385-389, doi:10.1007/978-94-007-1359-8_65, 2012. Link
[1] Finardi S., Mircea M., Righini G., Sofiev M., Hakkarainen J., Kukkonen J., Forecasting and assessment of wildland fires air quality impact in Italy, Proceedings of 8th Int. Conference on Air Quality - Science and Application, Athens, 19-23 March 2012. Link
Other publications
[4] Jocelyn C. Turnbull et al.: IG3IS Urban Greenhouse Gas Emission Observation and Monitoring Good Research Practice Guidelines, GAW Report No. 275, World Meteorological Organization (WMO), 2022. Link
[3] David Crisp et al.: A Constellation Architecture for Monitoring Carbon Dioxide and Methane from Space, White Paper, Committee on Earth Observation Satellites (CEOS), 2018. Link
[2] Janne Hakkarainen, Iolanda Ialongo, and Johanna Tamminen: "Direct space-based observations of anthropogenic CO2 emission areas: Global XCO2 anomalies" Chapter 4.2 on "A Guidebook on the Use of Satellite Greenhouse Gases Observation Data to Evaluate and Improve Greenhouse Gas Emission Inventories", Matsunaga T. and Maksyutov S. (eds), National Institute for Environmental Studies, Japan, 129 pp, 2018. Link
[1] Janne Hakkarainen: Hiilidioksidipäästöt kartalle, Ilmansuojelu - Magazine of the Finnish Air Pollution Prevention Society, 4/2016. Link
Recreational mathematics
[2] Janne Hakkarainen: Covering a Triangle with Triangles: An Old Problem Revisited. Academia Letters, Article 1559, doi:10.20935/AL1559,2021. Link
[1] Janne Hakkarainen: Infinite Magic Squares. viXra:1808.0005
Meetings and stuff...
OMI Science Team Meeting nr. 13, 2008, Helsinki, Finland. Link
Hepenaari 2009, Luosto, Finland.
5th Atmospheric Limb Conference, 16-19.11.2009 Helsinki, Finland. Link
MIDAT kickoff meeting, 2010, Luosto, Finland.
OMI Science Team Meeting nr. 15, 2010, KNMI, De Bilt, The Netherlands. Link
5th ESA Earth observations summer school, 2-13 August 2010, Frascati, Italy. Link
16th Inverse Days, December 15–17 2010, Oulu, Finland. Link
Hepenaari 2011, Luosto, Finland.
OMI Workshop 2011, Kuopio, Finland.
Annual seminar of the Lastu research programme, 2011, Tuusula, Finland.
OMI Science Team Meeting nr. 16, 12 September 2011, Helsinki, Finland. Link
EOS Aura Science Team Meeting, 13-15 September 2011, Helsinki, Finland. Link
6th Atmospheric Limb Conference, 29th Nov. - 1st Dec. 2011, Kyoto, Japan. Link
Hepenaari 2012, Luosto, Finland.
CSC Summer School in High-Performance Computing 2012, Nuuksio, Finland. Link
SILAM Winter School 2013, Helsinki, Finland. Link
OpenIFS user meeting, 4-16 June 2013, Helsinki, Finland. Link
SPIE Remote Sensing 2013, 23-26 September 2013, Internationales Congress Center, Dresden, Germany. Link
Finnish Remote Sensing Days 2014, October 29.-30. 2014, Kumpula, Helsinki, Finland. Link
GOMOS Quality Working Group 2014, 26-27 November 2014, ESA ESRIN, Frascati, Italy.
Hepenaari 2015, Luosto, Finland.
Applied Inverse Problems conference, AIP 2015, May 25-29 2015, Helsinki, Finland. Link
2015 Dragon 3 Symposium, from 22 to 26 June 2015, Interlaken, Switzerland. Link
GOMOS Quality Working Group 2015, September 2015, Sophia Antipolis, France.
Inverse Days 2015, December 8–10 2015, Lappeenranta, Finland. Link
Hepenaari 2016, Lammi Biological Station, Finland. Link
EGU General Assembly 2016, 17–22 April 2016, Vienna, Austria Link
Annual seminar of the ARKTIKO research programme, 10–11 May 2016, Helsinki, Finland
GOMOS Quality Working Group 2016, 28-29 June 2016, ESA ESRIN, Frascati, Italy.
2016 Dragon 3 Symposium, from 4 to 8 July 2016, Wuhan, P.R. China. Link
CARB-ARC meeting, 14-16 September 2016, Arctic Research Centre of Finnish Meteorological Institute in Sodankylä, Finnish Lapland.
The 2nd ICOS Science Conference on greenhouse gases and biogeochemical cycles, 27-29 September 2016, Helsinki, Finland. Link
OCO-2 Algorithm and Science Team Meeting, 25-27 October 2016, NCAR Mesa Lab, Boulder, Colorado. Link
Workshop on Satellite GHG Concentration Measurement and National GHG Emission Inventories, 27-28 February 2017, TKP Garden City Ochanomizu, Tokyo, Japan.
Hepenaari 2017, Luosto, Finland.
13th International Workshop on Greenhouse Gas Measurements from Space, 6-8 June 2017, Helsinki, Finland. Link
2017 Dragon Symposium, from 24 to 30 June 2017, Copenhagen Denmark. Link
AtMath kick-off conference, Levi, November 20-24 2017. Link
Skolar Award Premiere at Kaskas Media, Helsinki, Wednesday 29th of November 2017.
Skolar Award science pitching competition for postdocs, Slush 2017, Helsinki, on Dec 1st 2017. Link
23rd Inverse Days, December 12-14, 2017, Oulu, Finland. Link
Finnish Satellite Workshop 2018, 17 January 2018, Dipoli, Otaniemi. Link
Tieteiden yö 2018, Tiededisco rakkaudesta: Vaihtoehto Eskolle -napakymppi, 18 January 2018, Dubrovnik, Helsinki. Link
Research visit to National Institute for Environmental Studies (NIES), Tsukuba, Japan, 14-23 February 2018. Including...
Workshop on Satellite GHG Concentration Measurement and National GHG Emission Inventories, 15-16 February 2018, TKP Garden City Ochanomizu, Tokyo, Japan.
14th International Workshop on Greenhouse Gas Measurements from Space, 8-10 May 2018, Toronto, Canada. Link
Finnish Remote Sensing Day 2018, 16-17 May 2018, Kumpula, Helsinki. Link
2018 Dragon 4 Symposium, from 19 to 22 June 2018, Xi’an, P.R. China. Link
CWI Computational Imaging group, research visit, 23-28 September 2018. Link
Workshop on Inverse Problems and Uncertainty Quantification in Satellite Remote Sensing, 10-12 October 2018, Finnish Meteorological Institute, Helsinki, Finland. Link
24th Inverse Days, December 11-13, 2018 in Töölö campus of Aalto University, Helsinki, Finland. Link
Research Seminars on Computational Physics, March 9-10, 2019 in University of Eastern Finland, Kuopio, Finland. Link
2019 Living Planet Symposium. 13-17 May 2019, MiCo - Milano Congressi. Milan, Italy. Link
IG3IS -Transcom workshop and IG3IS science team Meeting, 15 – 18 October 2019, Cité Internationale Universitaire de Paris, France. Link
COVID-19, 2020-2023,very many online meetings.
Finnish Satellite Workshop 2023, 18-20 January 2023, Espoo Dipoli, Finland. Link
Visiting Dongxu Yang at IAP/CAS and ESA-Most 2023 Dragon 5 Symposium, China, September, 2023. Link
Inverse Days 2023, December 11–15, 2023 at Sibelius Hall, Lahti. Link
Hepenaari 2009, Luosto, Finland.
5th Atmospheric Limb Conference, 16-19.11.2009 Helsinki, Finland. Link
MIDAT kickoff meeting, 2010, Luosto, Finland.
OMI Science Team Meeting nr. 15, 2010, KNMI, De Bilt, The Netherlands. Link
5th ESA Earth observations summer school, 2-13 August 2010, Frascati, Italy. Link
16th Inverse Days, December 15–17 2010, Oulu, Finland. Link
Hepenaari 2011, Luosto, Finland.
OMI Workshop 2011, Kuopio, Finland.
Annual seminar of the Lastu research programme, 2011, Tuusula, Finland.
OMI Science Team Meeting nr. 16, 12 September 2011, Helsinki, Finland. Link
EOS Aura Science Team Meeting, 13-15 September 2011, Helsinki, Finland. Link
6th Atmospheric Limb Conference, 29th Nov. - 1st Dec. 2011, Kyoto, Japan. Link
Hepenaari 2012, Luosto, Finland.
CSC Summer School in High-Performance Computing 2012, Nuuksio, Finland. Link
SILAM Winter School 2013, Helsinki, Finland. Link
OpenIFS user meeting, 4-16 June 2013, Helsinki, Finland. Link
SPIE Remote Sensing 2013, 23-26 September 2013, Internationales Congress Center, Dresden, Germany. Link
Finnish Remote Sensing Days 2014, October 29.-30. 2014, Kumpula, Helsinki, Finland. Link
GOMOS Quality Working Group 2014, 26-27 November 2014, ESA ESRIN, Frascati, Italy.
Hepenaari 2015, Luosto, Finland.
Applied Inverse Problems conference, AIP 2015, May 25-29 2015, Helsinki, Finland. Link
2015 Dragon 3 Symposium, from 22 to 26 June 2015, Interlaken, Switzerland. Link
GOMOS Quality Working Group 2015, September 2015, Sophia Antipolis, France.
Inverse Days 2015, December 8–10 2015, Lappeenranta, Finland. Link
Hepenaari 2016, Lammi Biological Station, Finland. Link
EGU General Assembly 2016, 17–22 April 2016, Vienna, Austria Link
Annual seminar of the ARKTIKO research programme, 10–11 May 2016, Helsinki, Finland
GOMOS Quality Working Group 2016, 28-29 June 2016, ESA ESRIN, Frascati, Italy.
2016 Dragon 3 Symposium, from 4 to 8 July 2016, Wuhan, P.R. China. Link
CARB-ARC meeting, 14-16 September 2016, Arctic Research Centre of Finnish Meteorological Institute in Sodankylä, Finnish Lapland.
The 2nd ICOS Science Conference on greenhouse gases and biogeochemical cycles, 27-29 September 2016, Helsinki, Finland. Link
OCO-2 Algorithm and Science Team Meeting, 25-27 October 2016, NCAR Mesa Lab, Boulder, Colorado. Link
Workshop on Satellite GHG Concentration Measurement and National GHG Emission Inventories, 27-28 February 2017, TKP Garden City Ochanomizu, Tokyo, Japan.
Hepenaari 2017, Luosto, Finland.
13th International Workshop on Greenhouse Gas Measurements from Space, 6-8 June 2017, Helsinki, Finland. Link
2017 Dragon Symposium, from 24 to 30 June 2017, Copenhagen Denmark. Link
AtMath kick-off conference, Levi, November 20-24 2017. Link
Skolar Award Premiere at Kaskas Media, Helsinki, Wednesday 29th of November 2017.
Skolar Award science pitching competition for postdocs, Slush 2017, Helsinki, on Dec 1st 2017. Link
23rd Inverse Days, December 12-14, 2017, Oulu, Finland. Link
Finnish Satellite Workshop 2018, 17 January 2018, Dipoli, Otaniemi. Link
Tieteiden yö 2018, Tiededisco rakkaudesta: Vaihtoehto Eskolle -napakymppi, 18 January 2018, Dubrovnik, Helsinki. Link
Research visit to National Institute for Environmental Studies (NIES), Tsukuba, Japan, 14-23 February 2018. Including...
Workshop on Satellite GHG Concentration Measurement and National GHG Emission Inventories, 15-16 February 2018, TKP Garden City Ochanomizu, Tokyo, Japan.
14th International Workshop on Greenhouse Gas Measurements from Space, 8-10 May 2018, Toronto, Canada. Link
Finnish Remote Sensing Day 2018, 16-17 May 2018, Kumpula, Helsinki. Link
2018 Dragon 4 Symposium, from 19 to 22 June 2018, Xi’an, P.R. China. Link
CWI Computational Imaging group, research visit, 23-28 September 2018. Link
Workshop on Inverse Problems and Uncertainty Quantification in Satellite Remote Sensing, 10-12 October 2018, Finnish Meteorological Institute, Helsinki, Finland. Link
24th Inverse Days, December 11-13, 2018 in Töölö campus of Aalto University, Helsinki, Finland. Link
Research Seminars on Computational Physics, March 9-10, 2019 in University of Eastern Finland, Kuopio, Finland. Link
2019 Living Planet Symposium. 13-17 May 2019, MiCo - Milano Congressi. Milan, Italy. Link
IG3IS -Transcom workshop and IG3IS science team Meeting, 15 – 18 October 2019, Cité Internationale Universitaire de Paris, France. Link
COVID-19, 2020-2023,very many online meetings.
Finnish Satellite Workshop 2023, 18-20 January 2023, Espoo Dipoli, Finland. Link
Visiting Dongxu Yang at IAP/CAS and ESA-Most 2023 Dragon 5 Symposium, China, September, 2023. Link
Inverse Days 2023, December 11–15, 2023 at Sibelius Hall, Lahti. Link
