TH3-T03.1-SMOS- MISSION.ppt
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Transcript of TH3-T03.1-SMOS- MISSION.ppt
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SMOS First results after 18 months in
Orbit:successes and issues
Yann KERR, Philippe Waldteufel, François Cabot, Philippe
Richaume, Ali Mahmoodi, Steven Delwart , J.-P. Wiigneron,
Susanne Mecklenburg , Nicolas Reul, Jacqueline Boutin
IGARSS 2011Vancouver BC Canada
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YHK July 2011
Science Objectives for SMOS: The SMOS Mission
Mission specificationsSoil Moisture
multi-angulardual pol
4 % vol 3 day revisit(Vegetation 7 day)better than 50 km
Sea Surface Salinitymulti acquisitions
dual pol or 1st stokesbetter than 0.1 psu10 day to monthly
Grid scale (200 km)
Le Traon et al
Launched November 2 2009
Comm Phase May 2010Data since January 12 2010
IGARSS '11 Vancouver
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Outline• A few dates• Products over land and sea• Some interesting results
• Droughts• Floods• Huricanes
• Level 3 • Level 4• Issues• Way forward
IGARSS '11 Vancouver
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A few dates• First ideas 1990, First proposal 1991• MIRAS 1993- 1997• SMOS 1997 and 1998 • Launch 11/2/2009• Good data 12/1/2010• Commissioning phase 5/27/2010• Reprocessing of 2010 and new algo version Jan
2011• Next reprocessing november 2011
IGARSS '11 Vancouver
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Cal Val• See Monday’s session• Tb level
• Dome C• Ocean (ocean sessions as well)
• Soil moisture• Comparison with Other sensors
• Ocean salinity
IGARSS '11 Vancouver
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Antarctica around Dome Concordia
• Dome C only, Hallikainen model (one layer, Tsnow=-54)
Tv Domex-2 operative 2009Th Domex-2 operative 2009Th Domex-2 Initial 2009Tv Domex-2 Initial 2009Tv domex2010th domex2010
YHK July 2011
CabotMacelloni
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YHK JUly 2011
A. Al Bitar
IGARSS '11 Vancouver
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SMOS vs. ASCAT (AM)D Leroux
IGARSS '11 Vancouver
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SMOS vs. ECMWF vs. VUA (AM)
D LerouxIGARSS '11 Vancouver
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Erreur SMOS: 0.3 psu
N. Reul
IGARSS '11 Vancouver
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Central Africa 2
Ferrazzoli et al.
IGARSS '11 Vancouver
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African results
YHK _IGARSS '11 VnacouverC. Gruhier IGARSS '11 Vancouver
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Level 3
IGARSS '11 Vancouver
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IGARSS '11 Vancouver
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Reul & Boutin IGARSS '11 Vancouver
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Level 3 SM and Tau
IGARSS '11 Vancouver
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Level 4 SSS
IGARSS '11 Vancouver
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Some examples of results
IGARSS '11 Vancouver
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Ouragan Ouragan DANIELLEDANIELLE
25-27 Août 25-27 Août
OuraganOuraganEARLEARL2-3 Septembre2-3 Septembre
75 kt75 kt982 mb982 mb
100 kt100 kt947 mb947 mb
115 kt115 kt942 mb942 mb
90 kt90 kt955 mb955 mb
N. Reul
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Hurricane Earl was spotted twice by SMOS while it was decreasing from cat 3 to Cat 1 (Sep 2-3…)
SMOS wind retrievals (10m) « Hurricane Resarch Division » estimated winds (10m)
N. Reul
IGARSS '11 Vancouver
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YHK _IGARSS '11 Vancouver
March (top)and April 2011 SMOS (left) and ECMWF
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Recent Floodings in Australia
IGARSS '11 Vancouver
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Threats ?
IGARSS '11 Vancouver
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floods in the Mississippi Basin due to snowmelt
Risk map before the event
USGS flooding map
SMOS soil moisture data
AlBitar LerouxIGARSS '11 Vancouver
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Floods, risks, action and results
A. Al Bitar, E. Wood
IGARSS '11 Vancouver
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Extended Soil moisture values in products
SM v3.09 DPGS OPER - FULL SM v4.0.X –DiF – SM extended – no topo
SM>1.0Non realistic but representative of the flooded area
DiF effect SM more humide
Levees blasted – 03/05/2011
Al Bitar IGARSS '11 Vancouver
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L. Kaleschke IGARSS '11 Vancouver
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L. Kaleschke IGARSS '11 Vancouver
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Issues• RFI• Data gaps• Data quality in some cases• Data dissemination• Vegetation opacity retrieval• Dobson or Mironov?• Stokes 3 and 4• Fine calibration/drifts/ correction not totally
under control yet
IGARSS '11 Vancouver
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Issues• RFI• Data gaps• Data quality in some cases• Data dissemination• Vegetation opacity retrieval• Dobson or Mironov?• Stokes 3 and 4• Fine calibration/drifts/ correction not totally
under control yet
IGARSS '11 Vancouver
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Issues• RFI• Data gaps• Data quality in some cases• Data dissemination• Vegetation opacity retrieval• Dobson or Mironov?• Stokes 3 and 4• Fine calibration/drifts/ correction not totally
under control yet
IGARSS '11 Vancouver
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RFI Impact over Oceans
YHK July 2011
IN situAsc March
Desc AprilAsc April
Reul et al
IGARSS '11 Vancouver
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Richaume et al IGARSS '11 Vancouver
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Issue of RFI Europe
YHK July 2011Richaume et alIGARSS '11 Vancouver
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But Progresses are made !
YHK July 2011
Richaume et al
IGARSS '11 Vancouver
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Quality Results• RFI issues
– Serious and not well anticipated issue– Agressive actions on unlawfull emitters
YHK July 2011P RichaumeIGARSS '11 Vancouver
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IGARSS '11 Vancouver
Black area SM < -0.005means no product for these DGGs in OP
mode
With Dobson very dry for sandy dominant area
With Dosbon very wet area
3 days ascending orbits from 2010/12/01 to 2010/12/04 with rain events
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IGARSS '11 Vancouver
Only small black dots remain SM < -0.005None, if considering SM < -0.01means more DGGs in OP mode
With Mironov less dry for sandy area
With Mironov very wet area less
difference
3 days ascending orbits from 2010/12/01 to 2010/12/04 with rain events
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YHK July 2011
Summary
• SMOS has been running for over one year and a half• Works fine with a few hickups• Good data and good retrievals in spite of first days of a new
system• Some issues with
– RFI– Calibration (for SSS)– Vegetation Opacity still far from perfect– Land sea issue with level 1 processing– 3rd and 4th stokes parameters strange
• But over RFI free areas excellent results• Got to get rid of those RFI!!!
• Many new fields open• New ventures with Aquarius and eventually SMAP• See also
– Our Blog http://www.cesbio.ups-tlse.fr/SMOS_blog/
IGARSS '11 Vancouver
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http://www.cesbio.ups-tlse.fr/SMOS_blog/
IGARSS '11 Vancouver