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GSICS Executive Panel 10
JMA GPRC Report6-8 June 2010
WMO HQ, Geneva
Yoshihiko TaharaMeteorological Satellite CenterJapan Meteorological Agency
MTSAT Infrared Inter-Calibration(Progresses since EP-8 via EP-9)
May 2010: ATBD and GSICS Product Acceptance Form (GPAF) were submitted
July 2010: MTSAT-2 IR inter-calibration system and its monitoring web page were implemented simultaneously with the switchover to MTSAT-2 from MTSAT-1R
July 2010: GSICS Correction for MTSAT IR entered the Demonstration Phase of the GSICS Procedure for Product Acceptance (GPPA)
September 2010–: GSICS Correction data have been uploaded operationally on the EUMETSAT GSICS server (THREDDS)
–January 2011: Clear Sky Radiance (CSR) product was experimentally reprocessed by using the MTSAT IR GSICS Correction, and its preliminary Observing System Experiment was performed
Ongoing: Review is underway to enter the Pre-operation PhaseOngoing: MTSAT IR Near Real-Time Corrections (NRTC) is under
development
6-8 June 2011, GSICS-EP10
Review of MTSAT IR GSICS Correction (tentative)
Comments from reviewers regarding the usability of MTSAT IR GSICS Correction at this moment•Too far from the GSICS portal (wiki) to reach MTSAT GSICS corrections•Slow access to the GSICS wiki page from Japan•Once knowing the place of the MTSAT GSICS corrections, easy and fast to get•Enough information in meta-data •Suggestions to MTSAT ATBD– Tutorial to use GSICS correction expected
– No explanations on “LOOK-UP TABLE”, and Radiance and Tb conversion
Preliminary Experiment on CSR• CSR data were regenerated by using MTSAT IR GSICS Correction
(No tuning for cloud screening parameters was performed)• Regenerated TBs of the MTSAT WV ch. are about 0.5 K higher
than original TBs (left chart), that decreases departure between observation and NWP
• One month Observing System Experiment shows that number of CSR data assimilated in NWP are increased (right chart)
WV TB differences w/ and w/o GSICSWV TB differences w/ and w/o GSICS
Numbers of CSR data assimilated in OSENumbers of CSR data assimilated in OSE
• MTSAT-2 IR images contain midnight calibration error, which becomes large during eclipse seasons (right charts)• To use GSICS correction, SST parameters
should be tuned again. Otherwise, significant biases would be appeared. (bottom chart)• If diurnal bias information is obtained
from GSICS, better SST product would be expected
Experiment on SST
SST(GSICS) – SST(Original)
8 January 20118 January 2011 1 March 20111 March 2011
MTSAT 12um – AIRS Asc.(13:30) MTSAT 12um – AIRS Asc.(13:30)
MTSAT 12um – AIRS Dec.(01:30) MTSAT 12um – AIRS Dec.(01:30)
MTSAT 12um – AIRS (All orbits)MTSAT 12um – AIRS (All orbits)
Jul 2010 Jun 2011
MTSAT Visible Calibration(Progresses since EP-8 via EP-9)
September 2010: MTSAT-2 visible calibration system and its monitoring web page were implemented•Vicarious calibration comparing RT simulated radiances over •Cloud-free ocean, land (bare ground on Australia) and uniformed liquid cloud top by using•P, T, WV, W-surf from NWP re-analysis, ozone from TOMS and Land surface albedo and cloud parameters from MODIS
Collaborative researches with the Atmosphere and Ocean Research Institute (AORI), the University of Tokyo•Ongoing: Investigate on using ice cloud as the brightest target•Ongoing: Investigate on GMS VIS calibration before MODIS era
Collaborative researches with the Center for Environmental Remote Sensing (CEReS), Chiba university•Ongoing: Examine to generate re-calibrated global GEOSAT data•Ongoing: Examine to retrieve downward SW flux and validate it
6-8 June 2011, GSICS-EP10
7
Radiance(W
/m2/sr/um
)
Comparisons between RT calculations and observations in September 2002
METEOSAT-7
GOES-8 GOES-10
METEOSAT-5
DN
Re-calibration of Global GEO Visible Data(collaboration between Chiba Univ. and JMA)
6-8 June 2011, GSICS-EP10
Calibration coefficients (slope and Inercept) in 2002
GMS-5 GOES-10 GOES-8METEOSAT-5METEOSAT-7140 deg.63 deg.0 deg. 225 deg. 285 deg.
Average on 2 – 3 Sep 2002Average on 2 – 3 Sep 2002
EXAM SYSTEM [Takenaka et al., 2011, JGR-atmosphere]
Downward SW flux at the surfaceDownward SW flux at the surface
Downward SW Flux from Re-calibrated GEO VIS images(collaboration between Chiba Univ. and JMA)
6-8 June 2011, GSICS-EP10
Downward shortwave flux at the ground surface
METEOSAT-5(31.5E-101.5E)METEOSAT-7(322.5E-31.5E)
GMS5(101.5E-182.5E)
GOES-8(225E-345E) GOES-10(165E-285E)
Validation of the Flux by BSRN and SKYNET(collaboration between Chiba Univ. and JMA)
6-8 June 2011, GSICS-EP10EXAM SYSTEM [Takenaka et al., 2011, JGR-atmosphere]
Response to Action EP 8.2Prototype of a unified GSICS bias monitoring Web page
6-8 June 2011, GSICS-EP10
• May 2010: Action EP 8.2 (JMA, in consultation with GCC, to develop a prototype of a unified web page….) was adopted
• February 2011: Prototype HTML was presented at the GRWG and GDWG Web meeting for review
JMA GSICS Members from April 2011
Executive Panel (EP)• (new) Yoshihiko TAHARA (Mr)
GSICS Research Working Group (GRWG)• Arata OKUYAMA (Mr)• Kenji DATE (Mr)• (new) Hiroaki TSUCHIYAMA (Mr)
GSICS Data Working Group (GDWG)• (new) Yuki KOSAKA (Mr)• Ryuichiro NAKAYAMA (Mr)
GPRC points of contacts for operational matters• (new) Arata OKUYAMA (Mr)
6-8 June 2011, GSICS-EP10
6-8 June 2011, GSICS-EP10
6-8 June 2011, GSICS-EP10
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