Welcome and Introduction Riko Oki Earth Observation Research Center (EORC) Japan Aerospace Exploration Agency (JAXA) 7th Workshop of International Precipitation Working Group 17 November 2014 Tsukuba International Congress Center, Tsukuba, Japan
Welcome to Tsukuba-city 2
JAXA Tsukuba Space Center JAXA s Japan s
JAXA Earth Observation Satellite Projects Late 1990s 2000s 2003 (JAXA established) Earth Observation ADEOS Climate Change/Water GPM/DPR ADEOS- GCOM-W GCOM-C EarthCARE/ CPR TRMM/PR Aqua/ AMSR-E GOSAT Launched on February 28, 2014 (JST) Global Warming GOSAT-2 Land Use Communications ALOS Disaster Monitoring ALOS-2 Next Gene. (optical) COMETS DRTS WINDS Technology Development Positioning QZSS ETS- ETS- OICETS ETS- 4
Tropical Rainfall Measuring Mission (TRMM) Completion of Precipitation Radar (PR) onboard the TRMM satellite on 7 th October 2014. Major characteristics Focused on rainfall observation. First instantaneous rainfall observation by three different sensors (PR, TMI, VIRS). PR, active sensor, can observe 3D structure of rainfall. Targeting tropical and subtropical region, and chose non-sun-synchronous orbit (inc. angle 35 degree) to observe diurnal variation. Major achievement in Japan Demonstration of high quality and high reliability of a satellite onboard precipitation radar Improvement of precipitation retrieval from passive microwave radiometer by PR 3D observation Pioneering precipitation system climatology by PR observation Launch 28 Nov. 1997 (JST) Altitude About 350km (since 2001, boosted to 402km to extend mission operation Inc. angle Design life Instruments US-Japan joint mission Japan: PR, launch US: satellite, TMI, VIRS, CERES, LIS, operation About 35 degree, non-sunsynchronous orbit 3-year and 2month (still operating) Precipitation Radar (PR) TRMM Microwave Imager (TMI) Visible Infrared Scanner (VIRS) Lightning Imaging Sensor (LIS) CERES (not in operation)
TRMM PR 17-year averaged rainfall
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Spaceborne Precipitation Radar Development 1995 2000 2005 2010 2015 2020 TRMM/PR (by JAXA/NICT) Ku-band 13.8GHz) GPM/DPR (by JAXA/NICT) Ku-band 13.6GHz Ka-band 35.5GHz 1-day orbits of TRMM(PR) and GPM-Core(DPR) Dec. 1997-Oct.2014 World first spaceborne precipitation radar Significant improvement of the global rain estimation Deeper understanding on the tropical precipitation systems DPR first light: An extratropical cyclone seen off the coast of Japan, March 10, 2014 Feb. 2014- Now Upgrade the TRMM/PR: Improvement of accuracy by the dual frequency radar Apply to higher latitude Apply to flood warning systems using Combined product of radar, MWR and IR long term global precipitation record 8
Global Precipitation Measurement (GPM) KaPR: 35.5GHz radar (phased array) GPM Core Observatory GMI (Microwave Imager) KuPR: 13.6GHz radar (phased array) Constellation Satellites by international partners GPM is an international mission consisting of the GPM Core Observatory and Constellation Satellites for high accurate and frequent global precipitation observation. Core Observatory: developed under NASA and JAXA equal partnership. Constellation satellites: provided by international partners (includes GCOM-W1). Dual-frequency Precipitation Radar (DPR) developed by JAXA and NICT DPR is composed of two radars: KuPR & KaPR GPM Core Observatory was successfully launched on 28 Feb. 2014 (JST). Core Observatory by NASA-JAXA
JAXA s Role within GPM Project Since 2012 Development of DPR with NICT Launch of GPM Core Observatory by H-IIA rocket GCOM-W1 as one of constellation satellites Development of algorithms, GV, and GPM data processing and data distribution system to provide to end users Promotion of GPM data utilization and application in Japan and Asia 10
GPM Core Observatory Launch: 3:36 am on 28 Feb. 2014 (JST) CG image NASA JAXA Launch from the JAXA Tanegashima Space Center by the H-IIA F23 rocket JAXA Separation of the spacecraft
NASA-JAXA Joint First Images from the GPM Core Observatory JAXA/NASA Three dimensional structure of precipitation captured by DPR on 10 Mar. 2014. NASA/JAXA Extratropical Cyclone over the northwest Pacific Ocean (around 40N, 167E) around 1330Z on 10 Mar. 2014. GMI 36-GHz H TB is overlaying to the Geostationary IR provided by JMA and NOAA. NASA-JAXA Joint First Images from the GPM Core Observatory was released on 25 th Mar. 2014 Surface precipitation captured by GMI. NASA/JAXA 12
Global Satellite Mapping of Precipitation (GSMaP) Developed in Japan toward the GPM mission. About 1000 registered users (Sep 2014 statistics) Processed and distributed in near real time basis (about 4-hour after observations) by merging multi-satellite data. Hourly product in 0.1x0.1deg. lat/lon grid. Proto-type version has been in operation in JAXA since 2007. GPM-GSMaP data were released on Sep. 2014. GPM-GSMaP data is now available from JAXA G-portal (https://www.gportal.jaxa.jp) as well as current GSMaP web site (http://sharaku.eorc.jaxa.jp/ GSMaP/). http://sharaku.eorc.jaxa.jp/gsmap/
A movie of GPM-GSMaP in early June 2014 (Rainy season in Japan)
IPWG Validation collaboration The GSMaP joins the International Precipitation Working Group (IPWG) validation activities. We validates various satellite estimates around Japan. http://cawcr.gov.au/projects/satrainval/validation-intercomparison.html Our GSMaP products are validated in U.S.(J.-J.Wang/J. Janowiak), Australia (E. Ebert ), South America (D. Vila), Europe (C. Kidd), South Africa (E. Becker) and Japan (S. Shige).
JAXA Globe Portal (G-Portal) https://www.gportal.jaxa.jp/