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 GSICS

Numbers 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 2011 1 March 2011

MTSAT 12um – AIRS Asc.(13:30)

MTSAT 12um – AIRS Dec.(01:30)

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 2002

EXAM SYSTEM [Takenaka et al., 2011, JGR-atmosphere]

Downward 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