lecture 12 supplementary slidesdbj/phy2506/phy2506... · 2014. 11. 20. · 400 2 500 700 800 1000...
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PHY2506Atmospheric Data Assimilation
Lecture 12 !
Supplementary Slides
[ECMWF Lecture Notes, 2003]
[ECMWF Lecture Notes, 2003]
[Rabier et al, QJRMS, 2000]
Background zonal wind
Increments at same time as obs
x Obs at 850 hPa at 40N, 60W
6 hr window from 21Z-03Z
[Rabier et al, QJRMS, 2000]
Background zonal wind
Increments at middle of assim. window (0Z)
6 hr window from 21Z-03Z
[Rabier et al, QJRMS, 2000]
[Thépaut et al, QJRMS, 1996]
1200 UTC, 4 March 1994 0000 UTC, 5 March 1994
Background Fields
Geopotential Heights
1200 UTC, 4 March 1994 1200 UTC, 5 March 1994
[Thépaut et al, QJRMS, 1996]
Geopotential Heights
[Thépaut et al, QJRMS, 1996]
3Dvar Analysis Increments
[Thépaut et al, QJRMS, 1996]
[Thépaut et al, QJRMS, 1996]
4Dvar Analysis Increments
Observation at 42°N, 170.625°W Observation at 42°N, 168.75°W
[Thépaut et al, QJRMS, 1996]
Vertical Structure of Analysis Increment
[Thépaut et al, QJRMS, 1996]
Power SpectrumObs at 1000 hPa Obs at 500 hPa
Obs near the center of the low
Obs in high pressure region
Summary
[From ECMWF Lecture Notes by E. Holm, 2003]
[From ECMWF Lecture Notes by E. Holm, 2003]
[From ECMWF Lecture Notes by E. Holm, 2003](figures adapted from Menke, 1984)
[From ECMWF Lecture Notes by E. Holm, 2003](figures adapted from Menke, 1984)
[From ECMWF Lecture Notes by E. Holm, 2003](figures adapted from Menke, 1984)
[From ECMWF Lecture Notes by E. Holm, 2003](figures adapted from Menke, 1984)