spatial and temporal distributions of water vapour in the utls as observed with mipas/envisat
DESCRIPTION
Spatial and temporal distributions of water vapour in the UTLS as observed with MIPAS/Envisat. M.Milz for the IMK/IAA-MIPAS-Team. Outline. IMK water vapour products Seasonal distributions Interannual differences Timeseries Conclusion. IMK/IAA Retrievals. - PowerPoint PPT PresentationTRANSCRIPT
Atmospheric Science Conference, Atmospheric Science Conference,
ESA-ESRIN, 2006ESA-ESRIN, 2006
Spatial and temporal distributions of water vapour in the UTLS as
observed with MIPAS/Envisat
M.Milz for the IMK/IAA-MIPAS-Team
Atmospheric Science Conference, Atmospheric Science Conference,
ESA-ESRIN, 2006ESA-ESRIN, 2006
Outline IMK water vapour products Seasonal distributions Interannual differences Timeseries Conclusion
Atmospheric Science Conference, Atmospheric Science Conference,
ESA-ESRIN, 2006ESA-ESRIN, 2006
IMK/IAA Retrievals Scientific processor, independent from ESA
level 2 processing Different retrieval approach Fixed altitude grid, finer than tangent altitude
spacing - Regularization (Tikhonov-Phillips) Retrieval of additional parameters beyond
ESA standard products
Atmospheric Science Conference, Atmospheric Science Conference,
ESA-ESRIN, 2006ESA-ESRIN, 2006
IMK/IAA Retrievals Presented results are based on reprocessed Level
1b data (improved spectra quality) sophisticated retrieval baselines, based on
experience gained with NRT spectra. baselines consistent for all results consistent data from Sep 2002 until March 2004 approximately 1 complete day processed ever 10
days.
Atmospheric Science Conference, Atmospheric Science Conference,
ESA-ESRIN, 2006ESA-ESRIN, 2006
Water VapourBaseline version H2O_11
– Improved microwindow set– Relaxed regularization than previous products
(increased vertical resolution)– Consistent pre-retrieved shift and temperature
products
Atmospheric Science Conference, Atmospheric Science Conference,
ESA-ESRIN, 2006ESA-ESRIN, 2006
Seasonal distributions
Jan
ua
ry 2
003
Ju
ly 2
00
3
Ap
ril 2
00
3S
ep
tem
ber
20
03
6 ppmv
2 ppmv
Atmospheric Science Conference, Atmospheric Science Conference,
ESA-ESRIN, 2006ESA-ESRIN, 2006
Seasonal distributions
Se
pte
mb
er 2
003
Ap
ril 2
00
3
Ju
ly 2
00
3J
anu
ary
20
03
10 ppmv
0 ppmv
Atmospheric Science Conference, Atmospheric Science Conference,
ESA-ESRIN, 2006ESA-ESRIN, 2006
July 2003
Atmospheric Science Conference, Atmospheric Science Conference,
ESA-ESRIN, 2006ESA-ESRIN, 2006
Interannual differences
Split Vortex 2002!
H2O, September 2002 H2O, September 2003
2 ppmv
6 ppmv
Atmospheric Science Conference, Atmospheric Science Conference,
ESA-ESRIN, 2006ESA-ESRIN, 2006
Interannual differences IIT, September 2002 T, September 2003
180 K
230 K
Atmospheric Science Conference, Atmospheric Science Conference,
ESA-ESRIN, 2006ESA-ESRIN, 2006
Interannual differences II
Atmospheric Science Conference, Atmospheric Science Conference,
ESA-ESRIN, 2006ESA-ESRIN, 2006
Timeseries
Oct. 02 Mar. 04
Atmospheric Science Conference, Atmospheric Science Conference,
ESA-ESRIN, 2006ESA-ESRIN, 2006
Timeseries
Dehydration
Mesospheric Air
Atmospheric Science Conference, Atmospheric Science Conference,
ESA-ESRIN, 2006ESA-ESRIN, 2006
Timeseries
Split Vortex 2002
Atmospheric Science Conference, Atmospheric Science Conference,
ESA-ESRIN, 2006ESA-ESRIN, 2006
Conclusion Seasonal differences and peculiarities in water vapour
distributions were observed Increased H2O vmr around 30-40° N during July can be
attributed to the Indian Monsoon region Interannual differences for September (2002 vs. 2003) are
clearly visible Temporal evolution of water vapour fields show a clear
tape-recorder signal in the tropics and subsidence over South Pole
The IMK/IAA water vapour data set provides accurate data for analysis of initial 18 months of MIPAS measurements