1. Ten years of OMI measurements at Finnish Meteorological Institute Johanna Tamminen, Antti Arola, Seppo Hassinen, Simo Tukiainen, Janne Hakkarainen, Jari Hovila, Niilo Kalakoski, Marko Laine, Anu Määttä, Jukka Kujanpää, Viktoria Sofieva, Iolanda Ialongo, Osmo Aulamo, Timo Pirttijärvi, Timo Ryyppö, Rigel Kivi, Anders Lindfors, Tero Mielonen With special thanks to Gilbert Leppelemeir and Anssi Mälkki Finnish Meteorological Institute OMI Science Team Meeting De Bilt, the Netherlands, March 11-13, 2014

2. OMI - a success story in Finland First remote sensing instrument where Finland had a significant role in building the instrument: Technology project OMI heritage and experience has been used in VTT’s new developments in hyperspectral imagers for UAVs and nano- satellites. For Partria experience and reference from OMI opened doors for developing similar Detector Electronic Units for ESA missions. For Space Systems Finland OMI built experience on developing reliable ground processing systems applicable also in other fields.

3. Satellite Operations: Beginning of satellite data reception activities in Finland Sodankylä Very Fast Delivery service First operational satellite product : Surface UV radiation, important for health, ecosystems, climate and air quality Science Project: OMI ST 2014 OMI - a success story in Finland (cont.) UV radiation in Antarctic, Nov 9-10

4. OMI total ozone – monthly mean in Arctic April March February Figure I. Ialongo, FMI

5. OMI and TOMS ozone and UV time series data used to study the link between the total ozone in spring and summer UV in Northern Hemisphere high and mid-latitudes Inter-annual variability in springtime ozone abundance explains up to 20–40% of the summer UV variability Arctic ozone depletion 2011 increased the March–August cumulative erythemal clear-sky UV dose in the Northern Hemisphere extratropics by 3–4% compared to the climatology Reference: Karpechko, A. Yu., et al. (2013), The link between springtime total ozone and summer UV radiation in Northern Hemisphere extratropics, J. Geophys. Res. Atmos., 118, 8649–8661, doi:10.1002/jgrd.50601. Correlation functions between the TOMS/OMI March extratropical (north of 35°N) total ozone and monthly mean total ozone and noontime UVI in polar latitudes (north of 60°N) and mid- latitudes (35–60°N) from March to December. (Absolute values shown for red lines.)

6. Aura Direct Broadcast data reception in Sodankylä OMI ST 20146 Distribution in the web Direct Broadcast receiver Observations High-latitude site optimal for data reception of Polar satellites Coverage: most of Europe

7. omivfd.fmi.fi OMI real time products Daily measurements of Ozone UV-radiation SO2 Aerosols Available within 15-20 min after satellite overpass. Coverage: Northern Europe

8. Grimsvötn volcanic eruption May 21 st 2011 Fast availability of data important for forecasts to support aviation OMI VFD used to follow the transport of the ash and to constrain the dispersion forecasts. The eruption was strongest on 22 May and on 25th it arrived to Southern Finland Increased PM10 values clear on May 25th Concentration of smaller particles not increased OMI ash (AAI) during four days May 22. May 23. May 24.May 25. Particulate matter in Helsinki May 22-28, 2011

9. June 2013 – Smoke plume from Colorado The smoke plume originating from the wildfires in Colorado reached Europe in 25th June 2013 Sulfur dioxide from metal smelters in Siberia OMI SO 2 on May 14 th, 2012 Averaged SO2: Jun-Aug, 2005-07

10. Improve consistency of various instruments and algorithms: Ozone measurements during high column Challenging conditions: low sun periods SAUNA 1: March-April 2006 SAUNA 2: February-April 2007 Ground based instruments: ozone LIDAR, 6 Brewers, 2 Dobsons, 4 DOAS, 96 ozonesondes, dual sondes, CFH Sodankylä satellite validation site at high latitudes: International SAUNA-1 and SAUNA-2 campaigns

11. Global NO2 as seen by OMI OMI ST 201411 Figure from TEMIS service (www.temis.nl)

12. Pori port and city center Detection of emission hotspot in Northern Europe OMI NO2 (summer 2005 - 2011) Figure I. Ialongo, FMI

13. Pori port and city center Overlap with STEAM ship emissions OMI NO2 (summer 2005 - 2011) Detection of emission hotspot in Northern Europe Work ongoing to validate OMI NO2 at high latitudes Figure I. Ialongo, FMI

14. Proxy P2, assuming SO2 constant, for CN (3-25 nm) OMI UV data used for estimating seasonal variation of spatial distribution of new particle formation One of the key questions in climate research is the role of aerosols Nucleation mode aerosols are below the detection limit of satellites Proxies used instead Reference: Kulmala, M., Arola, A., Nieminen, T., Riuttanen, L., Sogacheva, L., de Leeuw, G., Kerminen, V.-M., and Lehtinen, K. E. J.: The first estimates of global nucleation mode aerosol concentrations based on satellite measurements, ACP., 11,, 2011. NH Winter Summer Autumn Spring

15. From OMI VFD to Polar Satellite data center Extended real-time satellite data services under development New 7.3 m antenna ESA Security and safety standards High speed 10 Gbit /s network NASA/NOAA Suomi NPP data reception (OMPS, VIIRS) Sentinel collaborative ground segment OMI ST 201415 OMPS Total ozone

16. OMI - Happy 10 years anniversary! Thank you Colleagues: The success is based on exceptionally good collaboration between the Netherlands, USA and Finland. OMI ST 201416 Figue: NASA Grimsvötn eruption 2011