Working group: Remote sensing of atmosphere

Tartu Observatory
61602, Tõravere
Estonia

[Personnel] | [Research] | [Publications] | [Projects and grants] | [Lecture courses]

Applications of optical radiometry in Estonian enterprises and institutions
Information about uv-radiation and ozone layer[](in Estonian)


 Personnel: 

	Kalju Eerme  (Ph.D.)	kalju[ät]aai.ee		(+372) 7 410 258
	Uno Veismann (Ph.D.)	uno[ät]aai.ee		(+372) 7 410 230
	Olavi Kärner (Ph.D.)	olavi[ät]aai.ee		(+372) 7 410 258
	Viivi Russak (D.Sc.)	russak[ät]aai.ee	(+372) 7 410 258 
	Ilmar Ansko  (M.Sc.)	jazov[ät]aai.ee
	Ain Kallis   (Ph.D.)	kallis[ät]aai.ee	(+372) 7 410 136
	Silver Lätt  (M.Sc.)	silver[ät]aai.ee	(+372) 7 410 258


 Research: 

The research areas are the solar ultraviolet radiation and the atmospheric total ozone over 
Estonia (U.Veismann, K. Eerme, I. Ansko, S. Lätt),Estonian radiation climatology (V. Russak, 
A. Kallis) and actual theoretical problems of climatology (O. Kärner) A. Kallis and 
V. Russak have been a contributors of the recent noteworthy paper issued in May 2005 in 
"Science". It is shown that in many sites of the Northern hemisphere extratropics the 
atmospheric transparency has improved and more radiation than in previous decades reaches 
the ground-level. The results can be found also in the "Handbook of estonian Solar Radiation 
Climate" (2003) compiled by them. O. Kärner has published metodological deep studies on the 
reliability of climate change detection. He has found that not only the reliability of future 
climate scenarios but also that of the  last century trends is not high enough. The doses of 
ultraviolet radiation reaching the ground-level vary almost similarly to the broadband solar 
radiation. Before 1976 and after 1993 the doses in most years have been considerably higher 
than in years 1976-1993 manifesting often more cloudier summers.   



 Publications:
 2008

Ansko I., Eerme K., Lätt S., Noorma M., and Veismann U.: Study of suitability of cheap AvaSpec array
spectrometer for solar UV field measurements. Atmos. Chem. Phys. Discussions, 8, 4199-4219, 2008.

Eerme K., Veismann U., Ansko I. : Päikese ultraviolettkiirgus ja loodus. 31. Eesti Loodusuurijate
Päev. Planeet Maa: Globaalsed ja lokaalsed probleemid. 31 Estonian Naturalists Congress. Planet
earth: Global and Local Problems. Eesti Loosusuurijate Selts, 24-41, Tartu, 2008

Koepke P., De Backer H., Bais A., Curylo A., Eerme K.,  Feister U., Johnsen B., Junk J., Kazantzidis
A., Krzyscin J., Lindfors A., Olseth J. A., den Outer P., Pribullova A., Schmalwieser A., Slaper H., 
Staiger H., Verdebout J., Vuilleumier L., Weihs P.: Modelling Solar UV radiation in the past:
Comparison of the algorithms and input data. Cost Action 726. Earth System Science and Environmental
Management. Final Report. COST Office, Luxembourg, 94 pp. ISBN 978-92-898-0043-3, 2008

 2007

Eerme K., Vaht M., Veismann U.: Päikese ultraviolettkiirgus Eestis: mõõtmised, sõltuvused  ja mõjud.
Eesti Arst, 5, 322-328, 2007.

Eerme K., Kallis A., Veismann U., Ansko I., Lätt S.: Integraalse päikesekiirguse sesoonne
aastast-aastasse muutlikkus Tartu-Tõravere Meteoroloogiajaamas aastatel 1955-2006. Publ. Inst. Geogr.
Univ. Tartuensis, 102, 53-70, 2007.

Eerme K, Veismann U, Ansko I, Lätt S.: Determination of UV-A/UV-B ratios from the automatically
recorded global solar ultraviolet spectra. Proceedings of the  UV conference "One Century of UV
Radiation Research" 18-20 September 2007, Davos Switzerland, Davos, Switzerland, 57, 2007.

Koepke P., Schmalwieser A. W., De Backer H., Bais A., Curylo A., Eerme K., Feister U., Johnson
B., Junk J., Kazantzidis A., Krzyscin J., Lindfors A., Olseth J. A., den Outer P., Pribullova A.,
Slaper H., Steiger H., Verdebout J., Vuillemier L., Weihs P.: Comparison of algorithms and input data
for modelling solar ultraviolet radiation in the past. Geophysical Research Abstracts, vol. 9, 08259,
Egu2007-A-08259, 2007.


 2006

Eerme, K.; Veismann, U.; Lätt, S. (2006). Proxy-based reconstruction of erythemal
UV doses over Estonia for 1955 - 2004. Annales Geophysicae, 24(7), 1767 - 1782.
Eerme, Kalju; Veismann, Uno; Ansko, Ilmar; Lätt, Silver (2006). Year-to-year variatios
of the vitamin D synthesis related UV-B radiation in Estonia in autumn and spring.. In:SPIE
proceedings: Remote Sensing; Remote Sensing of Clouds and the Atmosphere; Stockholm, Sweden;
11-14. sept. 2006. Spie - International Society For Optical Engineering, 2006
Koepke, Peter; De Backer, Hugo; Bais, Alkiviadis; Curylo, Aleksander; Eerme, Kalju;
Feister, Uwe; Johnsen, Bjorn; Junk, Juergen; Kazantzidis, Andreas; Krzyscin, Janusz;
Lindfors, Anders; Olseth, Jan Asle; den Outer, Peter; Pribullova, Anna; Schmalwieser, Alois;
Slaper, Harry; Staiger, Henning; Verde-bout, Jean; Vuilleumier, Laurent; Weihs, Philipp
(2006). Modelling solar UV radiation in the past: Comparison of algorithms and input data.
In:SPIE proceedings: Spie - International Society For Optical Engineering, 2006.



 2005

Wild M, Gilgen H, Roesch A, Ohmura A, Long C.N, Dutton E. G, Forgan B, Kallis A, 
Russak V, Tsvetkov A: From Dimming to Brightening: Decadal Changes in Solar 
Radiation at Earth's Surface. Science 308, 847-850, 2005.
Eerme K.: Variations of Total Solar Radiation and Estimated Erythemal UV
Doses in Estonia During 1953.2004. Annalen der Meteorologie 41, 663.
666, 2005.
Kärner O.: Some Examples of Negative Feedback in the Earth Climate System.
Central European Jour. of Physics 3, 190.208, 2005.
Kallis A., Russak V., Ohvril H.: 100 Years of Solar Radiation Measurements in
Estonia. In:World Climate Research Programme. Report of the Eighth Session
of the Baseline Surface Radiation Network (BSRN), Workshop and Scienti^Bc
Review (Exeter, UK, 26.30 July 2004), WCRP Informal Report No. 4/2005,
C1.C4, 2005.
Ohvril H., Teral H., Tee M., Russak V., Okulov O., Jõeveer A., Kallis A., Abakumova
G., Terez E., Guschchin G., Terez G., Olmo F.J., Alados-Arboledas
L., Laurainen N.: Multi-Annual Variability of Atmospheric Transparency
in Estonia. In: Proceedings of the 2nd Joint International Conference of
International Forum of Experts in Solar Radiation and Daylight (SOLARIS
2005), Hellenic Illumination Committee, Athens 26.05..27.05.2005, 42.46,
2005.
Ohvril H., Teral H., Russak V., Kallis A., Laulainen N.: Spectral Aerosol Optical
Depth Derived from Broadband Direct Solar Irradiance. In: Proceedings
of the 2nd Joint International Conference of International Forum of Experts
in Solar Radiation and Daylight (SOLARIS 2005), Hellenic Illumination
Committee, Athens 26.05..27.05.2005, 48.50, 2005.
Russak V., Ohvril H., Teral H., Jõeveer A., Kallis A., Okulov O.: Multiannual
Changes in Spectral Aerosol Optical Thickness in Estonia. In: Abstracts
of the European Aerosol Conference 2005 (28.08..02.09.2005, Ghent, Belgium),
ed.W. Maenhaut, 399, 2005.


 2004

Eerme K.: Changes in Spring-Summer Cirrus Cloud Amount Over Estonia, 1958-2003. 
Int. J. Climatol. 24, 1543-1549, 2004.
Krzyscin J. W., Eerme K., Janouch M.: Long-Term Variations of the UV-B Radiation Over 
Central Europe as Derived from the Reconstructed UV Time-Series. Annales Geophysicae 22, 
1473-1485, 2004.
Kärner O.: Lävemetoodika alused pilvisust kirjeldavate suuruste määramiseks 
satelliidiandmetest. Publ. Inst. Geographici Universitatis Tartuensis 95, 20-30, 2004.
Teral H., Ohvril H., Okulov O., Russak V., Reinart A.: Atmosfääri aerosoolse optilise 
paksuse arvutamine päikese integraalsest otsekiirgusest. Publ. Inst. Geographici 
Universitatis Tartuensis 95. 31-44.
Eerme K.: Changes in Summer-Spring Cirrus Cloud Amount and Other Cloudiness Related 
Characteristics Over Estonia (1958-2002). In: Extended Abstracts of the Workshop "Ozone 
and UV Radiation over Central Europe (20-22 October 2003), Jachranka, Poland, 
123-126, 2004.
Russak V., Teral H., Ohvril H.: Trends in Atmospheric Aerosol Loading in Estonia During 
the Period 1951-2003. CD: Fourth Annual Meeting of the European Meteorological Society. 
Part and Partner: 5th European Conference on Applied Climatology (ECAC), Nice, France, 
26-30 September, 2004.
Teral H., Ohvril H., Okulov O., Russak V., Reinart A., Laulainen N.: Spectral Aerosol 
Optical Thickness from Solar Broadband Direct Irradiance - summer 2002, Tõravere, Estonia. 
In. Abstracts of the European Aerosol Conference 2004 (6-10 September 2004, Budapest, 
Hungary), J. Aerosol Science, S547-548, 2004.
Veismann U.: UV Sensors Based on the Solar Blind Phototubes. In: Extended Abstracts 
of the Workshop "Ozone and UV Radiation over Central Europe"m(20-22 October 2003), 
Jachranka, Poland, 143-145, 2004.

2003

Russak V., Kallis A.: Handbook of Estonian Solar Radiation Climate. Estonian
Meteorological and Hydrological Institute, 2004.
Eerme K., Veismann U., Koppel R.: Erüteemse ultraviolettkiirguse dooside tagasivaatav 
hindamine. Publ. Inst. Geographici Universitatis Tartuensis  93, 295-307, 2003.
Eerme K., Veismann U., Koppel R.: Comparison of Ground-Level-Measured  and 
Satellite-Derived Erythemal Ultraviolet Doses in Estonia. Proc. Estonian Acad. Sci. Phys. 
Math. 52, 221-235, 2003.
Kärner O.: Klimatoloogia - aritmeetiline rahvaluule või ratsionaalne andmetöötlus. 
Publ. Inst. Geographici Universitatis Tartuensis  93, 9-23, 2003.
Russak V., Niklus I.: Päikesekiirguse vootiheduse suhe kui atmosfääri läbipaistvuse 
indikaator. Publ. Inst. Geographici Universitatis Tartuensis  93, 288-294, 2003.
Kärner O., Karlsson G.-K.: Climate Monitoring SAF Cloud Products Feasibility Study in 
the Inner Arctic Region. Part II: Evaluation of Variability in Radiation and Cloud Data. 
In: Visiting Scientist Report, SMHI, Norrköping, 1-50, 2003.
Mellikov E., Tomson T., Kallis A., Russak V.: Steady-State Variability of Solar Irradiance. 
In: ISES Solar World Congress 2003, June 14-19, Göteborg, Sweden, Abstracts, 247, 2003.
Mellikov E., Tomson T., Kallis A., Russak V.: Steady-State Variability of Solar Irradiance. 
In: ISES Solar World Congress 2003, June 14-19, Göteborg, Sweden, CD-ROM, 6 p., 2003.



 Projects and grants:

 Recent:

Estonian Science Foundationi Grant  5004: O. Kärner - Globaalsete temperatuuriridade 
modelleerimine. 2002-2005.
Estonian Science Foundation Grant 5348: U. Veismann  - Atmosfääri optiliste parameetrite 
mõju Päikese ultraviolettkiirgusele maapinnal. 2003-2006.
Estonian Science Foundation Grant 5857: H. Ohvril, TÜ (V. Russak üks põhitäitja) - Õhusamba 
veeauru ja aerosoolisisalduse uurimine. 2004-2007.
European Union COST (Cooperation in the field of Science and Technology) action 726: 
Long Term Changes and Climatology of UV Radiation over Europe. Eesti esindaja K. Eerme.

Past:

European Union 5. Frame programme EDUCE (European Database for UV Climatology and 
Evaluation. 2002-2003. K. Eerme.
Estonian Science Foundation grant 4140: V. Russak - Atmosfääri muutlike komponentide ja nende 
varieeruvuse uurimine optilise sondeerimise meetodil. 2000-2003.
Estonian Science Foundation grant 3609: U. Veismann - Päikese ultraviolettkiirgus Eestis. 1999-2002.
Estonian Science Foundation grant 4141: O. Kärner - Globaalse kliimamuutuse perspektiiv viimaste 
aastakümnete satelliidimõõtmiste alusel. 1998-2001.
Estonian Science Foundation grant 2008: U. Veismann - Erüteemse ultraviolettkiirguse monitooringu 
printsiibid ja nende rakendamine regulaarmõõtmistel Eestis. 1996-1998.
Estonian Science Foundation grant 2007. O. Kärner - Ilmatüüpide analüüs ja satelliidimeetodite 
arendamine kliima monitooringu ja modelleerimise tarbeks. 1995-1997.



 Lecture courses: (in Tartu University, Institure of Environmental Physics)
	2004/2005
        U. Veismann     Image Processing in Remote Sensing
        U. Veismann     Computer-Aided Measurements
        K. Eerme        Introduction to Geophysics 
        K. Eerme        Environmental Science

	2003/2004:
        U. Veismann     Image Processing in Remote Sensing
        U. Veismann     Computer-Aided Measurements
        K. Eerme        Introduction to Geophysics
        K. Eerme        Environmental Science

	2002/2003:
	U. Veismann     Astronomical Technique
        U. Veismann     Image Processing in Remote Sensing
        U. Veismann     Computer-Aided Measurements
        K. Eerme        Introduction to Geophysics
        K. Eerme        Environmental Science


	2001/2002:
	U. Veismann	Image Processing in Remote Sensing
	U. Veismann	Computer-Aided Measurements
	K. Eerme	Introduction to Geophysics


	2000/2001:
	U. Veismann	Image  Processing in Remote Sensing 
	U. Veismann	Computer-aided measurements 
	K. Eerme	Environmental Sciences 
	K. Eerme	Introduction to Geophysics 

Viimati muudetud: 27.06.2005