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

Comparison of the temperature fields

• btained 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

One of NOAA's polar orbiting satellites carrying the TOVS instruments ECMWF's current High Performance Computing Facility (HPCF)

The TIROS Operational Vertical Sounder (TOVS) equipped aboard NOAA's TIROS series of polar orbiting satellites consists of three 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*2.50

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.

11/1/08 12/1/08 12/31/08 1/30/09 3/1/09 3/31/09

Month/Day/Year

200 220 240 260

Temperature [K]

TOVS, NOAA ERA-Interim

220 240 260 220 240 260

135E-65N 90E-60N 100E-50N

11/1/09 12/1/09 12/31/09 1/30/10 3/1/10 3/31/10

Month/Day/Year

210 220 230 240 250 260

Temperature [K]

TOVS, NOAA ERA-Interim

220 240 260 220 240 260

135E-65N 90E-60N 100E-50N

Mean 135E-65N 90E-60N 100E-50N TOVS 221.7 216.0 226.6 ERA 220.3 215.9 225.8 D 1.4 0.1 0.8 Mean 135E-65N 90E-60N 100E-50N TOVS 228.4 224.1 230.1 ERA 227.4 223.5 229.7 D 1.0 0.6 0.4

Temperature graphs at 10 hPa height for the winters 2008/2009 (left) and 2009/2010 (right).

• 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.

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

300 350 400 450 500 550 600 20000 40000 60000 80000 100000

Fof2 500 hPa 300 hPa 100 hPa 30 hPa 20 hPa 10 hPa

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

300 350 400 450 500 550 600 20000 40000 60000 80000 100000

Fof2 500 hPa 300 hPa 100 hPa 30 hPa 20 hPa 10 hPa

Variations of ionospheric disturbances and amplitudes of planetary waves 1 and 2 in the troposphere-stratosphere for 2008/09

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

m=1 m=2

Крутильные колебания и температура в стратосфере

2008 - 2009

Азия (80-150° в.д.)

2012-2013

Тихий океан (150-240° в.д.) Атлантика (90-180 з.д.) 1.09.2008 номер дня 31.03.2009 1.09.2008 номер дня 31.03.2009

Thank you for attention!