Comparison of the temperature fields obtained from satellite probing - PowerPoint PPT Presentation

Comparison of the temperature fields obtained from satellite probing and ERA-Interim data for geopotential height 10 hPa in wintertime over Siberia Kochetkova O.S. , Devyatova E.V., Tatarnikov A.V., Mordvinov V.I., Shcheglova E.S. Institute of solar-terrestrial physics SB RAS, Irkutsk

The TIROS Operational One of NOAA's polar orbiting Vertical Sounder (TOVS) equipped aboard NOAA's satellites carrying the TOVS TIROS series of polar orbiting satellites consists of three instruments instruments: the High Resolution Infrared Radiation Sounder (HIRS), the Microwave Sounding Unit (MSU) and the Stratospheric Sounding Unit (SSU). The MSU and SSU have been replaced with improved instruments, the AMSU-A andAMSU-B, on the newer satellites. ECMWF ERA- Interim 2.5*2.5 0 ECMWF's current High Performance Computing Facility (HPCF)

Spatial distributions of temperature at the 10 hPa height. Left panel – satellite probing data. Right panel – ERA-Interim re-analysis data TOVS 23.12.08 – 31.12. 08 ERA-Interim 23.12.08 – 31.12. 08 TOVS 01.02.10 – 09.02.10 ERA-Interim 01.02.10 – 09.02.10

Besides mapping and comparison of the temperature spatial distributions the comparison of temperature temporal dynamics was made and degree of consistency between the two data sets has been elucidated. To do this, we calculated the correlation coefficients between the temperature variations from TOVS data and ERA-Interim data separately for each of the months from November to March for two winters - 2008/2009 and 2009/2010. Correlation coefficients were calculated in 12 grid points shown in Fig. 4 grid points in Western Siberia, 4 – in Irkutsk region, and 4 - in Yakutia.

Values of correlation coefficients for the winter 2009/2010 Calculations of correlation coefficients showed a good correlation between TOVS and ERA- Interim data. The minimum values of the correlation coefficients observed in Yakutia, but even in this case they have values not less than 0.70.

Temperature graphs at 10 hPa height for the winters 2008/2009 (left) and 2009/2010 (right). Mean 135E-65N 90E-60N 100E-50N Mean 135E-65N 90E-60N 100E-50N TOVS 221.7 216.0 226.6 TOVS 228.4 224.1 230.1 ERA 220.3 215.9 225.8 ERA 227.4 223.5 229.7 D 1.4 0.1 0.8 D 1.0 0.6 0.4 260 TOVS, NOAA TOVS, NOAA 135E-65N ERA-Interim ERA-Interim 260 135E-65N 240 240 220 220 Temperature [K] 260 Temperature [K] 260 90E-60N 90E-60N 240 240 220 220 260 260 100E-50N 250 100E-50N 240 240 230 220 220 200 210 11/1/08 12/1/08 12/31/08 1/30/09 3/1/09 3/31/09 11/1/09 12/1/09 12/31/09 1/30/10 3/1/10 3/31/10 Month/Day/Year Month/Day/Year

• Comparison of the spatial distribution and dynamics of the temperature at 10 hPa height in winter over Siberia, according to satellite probing data and ERA-Interim re-analysis data showed good agreement between data sets. This allows simultaneous use of both data sets for studies of processes in the upper, middle and lower atmosphere and the relationship between these processes.

Variations of ionospheric disturbances and amplitudes of planetary waves 1 and 2 in the troposphere-stratosphere for 2008/09 100000 600 m=1 Fof2 500 hPa 300 hPa 550 100 hPa 80000 30 hPa 20 hPa 10 hPa 500 60000 450 40000 400 20000 350 0 300 1/1/08 4/10/08 7/19/08 10/27/08 2/4/09 5/15/09 8/23/09 12/1/09 Month/Day/Year 100000 600 Fof2 500 hPa m=2 300 hPa 100 hPa 550 80000 30 hPa 20 hPa 10 hPa 500 60000 450 40000 400 20000 350 0 300 1/1/08 4/10/08 7/19/08 10/27/08 2/4/09 5/15/09 8/23/09 12/1/09 Month/Day/Year Lastovicka J. Forcing of the ionosphere by waves from below // J. Atmos. and Solar-Terr. Phys. 2006. V. 68. P. 479–497.; Шпынев Б . Г ., Панчева Д ., Мухтаров П ., Куркин В . И ., Ратовский К . Г ., Черниговская М . А ., Белинская А . Ю ., Степанов А . Е . Отклик ионосферы над регионом Восточной Сибири во время внезапного стратосферного потепления 2009 г . по данным наземного и спутникового радиозондирования // Современные проблемы дистанционного зондирования Земли из космоса . 2013. Т . 10. № 1. С . 153–163

Крутильные колебания и температура в стратосфере 2008 - 2009 2012-2013 Азия (80-150° в . д .) Тихий океан (150-240° в . д .) Атлантика (90-180 з . д .) номер дня 31.03.2009 номер дня 31.03.2009 1.09.2008 1.09.2008

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