Click
here to go to the CAWCR validation page for the Australia.
Click
here to go to the U. Maryland validation page for the US.
Click
here to go to the NASA/GSFC Precipitation validation page for Europe.
Click
here to go to the U. Maryland validation page for South America.
Click here (in English) and here (in Japanese) for description of the contents.
--- | Gauge, PMW, and IR | Blended PMW and IR | Merged PMW Only | IR | IR & VIS | WGNE-NWP | GSMaP hourly | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Valid Date (12-12 UTC) | GSMaP_Gauge | GSMaP_NOW | GSMaP_NRT | GSMaP_MVK | NASA(3B42RT) | NASA(IMERG_NRT_E) | NASA(IMERG_NRT_L) | CPC(CMORPH) | PERSIANN | NRLBLD | NASA(3B40RT) | NASA(IMERG_NRT_E) | NASA(IMERG_NRT_L) | CPC(MWCOMB) | MiRS | MSPPS | NASA(3B41RT) | NASA(IMERG_NRT_E) | NASA(IMERG_NRT_L) | NESDIS(HYDRO) | JMA | ECMWF | GFS | METOFR | BoM | Valid Date |
20210316 | --- | --- | GSMaP_NRT | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | JMA | --- | --- | --- | --- | 20210316 |
20210315 | --- | GSMaP_NOW | GSMaP_NRT | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | JMA | --- | --- | --- | --- | 20210315 |
20210314 | --- | GSMaP_NOW | GSMaP_NRT | --- | --- | Cal Uncal | Cal Uncal | --- | --- | --- | --- | IMERG_NRT_E | IMERG_NRT_L | --- | --- | --- | --- | IMERG_NRT_E | IMERG_NRT_L | --- | JMA | --- | --- | --- | --- | 20210314 |
20210313 | --- | GSMaP_NOW | GSMaP_NRT | --- | --- | Cal Uncal | Cal Uncal | --- | --- | --- | --- | IMERG_NRT_E | IMERG_NRT_L | --- | --- | --- | --- | IMERG_NRT_E | IMERG_NRT_L | --- | JMA | --- | --- | --- | --- | 20210313 |
20210312 | GSMaP_Gauge | GSMaP_NOW | GSMaP_NRT | GSMaP_MVK | --- | Cal Uncal | Cal Uncal | --- | --- | --- | --- | IMERG_NRT_E | IMERG_NRT_L | --- | --- | --- | --- | IMERG_NRT_E | IMERG_NRT_L | --- | JMA | --- | --- | --- | --- | 20210312 |
20210311 | GSMaP_Gauge | GSMaP_NOW | GSMaP_NRT | GSMaP_MVK | --- | Cal Uncal | Cal Uncal | --- | --- | --- | --- | IMERG_NRT_E | IMERG_NRT_L | --- | --- | --- | --- | IMERG_NRT_E | IMERG_NRT_L | --- | JMA | --- | --- | --- | --- | 20210311 |
20210310 | GSMaP_Gauge | GSMaP_NOW | GSMaP_NRT | GSMaP_MVK | --- | Cal Uncal | Cal Uncal | --- | --- | --- | --- | IMERG_NRT_E | IMERG_NRT_L | --- | --- | --- | --- | IMERG_NRT_E | IMERG_NRT_L | --- | JMA | --- | --- | --- | --- | 20210310 |
20210309 | GSMaP_Gauge | GSMaP_NOW | GSMaP_NRT | GSMaP_MVK | --- | Cal Uncal | Cal Uncal | --- | --- | --- | --- | IMERG_NRT_E | IMERG_NRT_L | --- | --- | --- | --- | IMERG_NRT_E | IMERG_NRT_L | --- | JMA | --- | --- | --- | --- | 20210309 |
20210308 | GSMaP_Gauge | GSMaP_NOW | GSMaP_NRT | GSMaP_MVK | --- | Cal Uncal | Cal Uncal | --- | --- | --- | --- | IMERG_NRT_E | IMERG_NRT_L | --- | --- | --- | --- | IMERG_NRT_E | IMERG_NRT_L | --- | JMA | --- | --- | --- | --- | 20210308 |
20210307 | GSMaP_Gauge | GSMaP_NOW | GSMaP_NRT | GSMaP_MVK | --- | Cal Uncal | Cal Uncal | --- | --- | --- | --- | IMERG_NRT_E | IMERG_NRT_L | --- | --- | --- | --- | IMERG_NRT_E | IMERG_NRT_L | --- | JMA | --- | --- | --- | --- | 20210307 |
20210306 | GSMaP_Gauge | GSMaP_NOW | GSMaP_NRT | GSMaP_MVK | --- | Cal Uncal | Cal Uncal | --- | --- | --- | --- | IMERG_NRT_E | IMERG_NRT_L | --- | --- | --- | --- | IMERG_NRT_E | IMERG_NRT_L | --- | JMA | --- | --- | --- | --- | 20210306 |
20210305 | GSMaP_Gauge | GSMaP_NOW | GSMaP_NRT | GSMaP_MVK | --- | Cal Uncal | Cal Uncal | --- | --- | --- | --- | IMERG_NRT_E | IMERG_NRT_L | --- | --- | --- | --- | IMERG_NRT_E | IMERG_NRT_L | --- | JMA | --- | --- | --- | --- | 20210305 |
20210304 | GSMaP_Gauge | GSMaP_NOW | GSMaP_NRT | GSMaP_MVK | --- | Cal Uncal | Cal Uncal | --- | --- | --- | --- | IMERG_NRT_E | IMERG_NRT_L | --- | --- | --- | --- | IMERG_NRT_E | IMERG_NRT_L | --- | JMA | --- | --- | --- | --- | 20210304 |
20210303 | GSMaP_Gauge | GSMaP_NOW | GSMaP_NRT | GSMaP_MVK | --- | Cal Uncal | Cal Uncal | --- | --- | --- | --- | IMERG_NRT_E | IMERG_NRT_L | --- | --- | --- | --- | IMERG_NRT_E | IMERG_NRT_L | --- | JMA | --- | --- | --- | --- | 20210303 |
20210302 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 20210302 |
20210301 | GSMaP_Gauge | --- | GSMaP_NRT | GSMaP_MVK | --- | Cal Uncal | Cal Uncal | --- | --- | --- | --- | IMERG_NRT_E | IMERG_NRT_L | --- | --- | --- | --- | IMERG_NRT_E | IMERG_NRT_L | --- | JMA | --- | --- | --- | --- | 20210301 |
Rain Rate | Correlation | ETS | |||||||||
Bias error | RMS error | POD | FAR | ||||||||
--- | Gauge, PMW, and IR | Blended PMW and IR | Merged PMW Only | IR | IR & VIS | WGNE-NWP | GSMaP hourly | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Valid Date (12-12 UTC) | GSMaP_Gauge | GSMaP_NOW | GSMaP_NRT | GSMaP_MVK | NASA(3B42RT) | NASA(IMERG_NRT_E) | NASA(IMERG_NRT_L) | CPC(CMORPH) | PERSIANN | NRLBLD | NASA(3B40RT) | NASA(IMERG_NRT_E) | NASA(IMERG_NRT_L) | CPC(MWCOMB) | MiRS | MSPPS | NASA(3B41RT) | NASA(IMERG_NRT_E) | NASA(IMERG_NRT_L) | NESDIS(HYDRO) | JMA | ECMWF | GFS | METOFR | BoM | Valid Date |
20210228 | GSMaP_Gauge | GSMaP_NOW | GSMaP_NRT | GSMaP_MVK | --- | Cal Uncal | Cal Uncal | --- | --- | --- | --- | IMERG_NRT_E | IMERG_NRT_L | --- | --- | --- | --- | IMERG_NRT_E | IMERG_NRT_L | --- | JMA | --- | --- | --- | --- | 20210228 |
20210227 | GSMaP_Gauge | GSMaP_NOW | GSMaP_NRT | GSMaP_MVK | --- | Cal Uncal | Cal Uncal | --- | --- | --- | --- | IMERG_NRT_E | IMERG_NRT_L | --- | --- | --- | --- | IMERG_NRT_E | IMERG_NRT_L | --- | JMA | --- | --- | --- | --- | 20210227 |
20210226 | --- | --- | GSMaP_NRT | --- | --- | Cal Uncal | Cal Uncal | --- | --- | --- | --- | IMERG_NRT_E | IMERG_NRT_L | --- | --- | --- | --- | IMERG_NRT_E | IMERG_NRT_L | --- | JMA | --- | --- | --- | --- | 20210226 |
20210225 | GSMaP_Gauge | GSMaP_NOW | GSMaP_NRT | GSMaP_MVK | --- | Cal Uncal | Cal Uncal | --- | --- | --- | --- | IMERG_NRT_E | IMERG_NRT_L | --- | --- | --- | --- | IMERG_NRT_E | IMERG_NRT_L | --- | JMA | --- | --- | --- | --- | 20210225 |
20210224 | GSMaP_Gauge | GSMaP_NOW | GSMaP_NRT | GSMaP_MVK | --- | Cal Uncal | Cal Uncal | --- | --- | --- | --- | IMERG_NRT_E | IMERG_NRT_L | --- | --- | --- | --- | IMERG_NRT_E | IMERG_NRT_L | --- | JMA | --- | --- | --- | --- | 20210224 |
20210223 | GSMaP_Gauge | GSMaP_NOW | GSMaP_NRT | GSMaP_MVK | --- | Cal Uncal | Cal Uncal | --- | --- | --- | --- | IMERG_NRT_E | IMERG_NRT_L | --- | --- | --- | --- | IMERG_NRT_E | IMERG_NRT_L | --- | JMA | --- | --- | --- | --- | 20210223 |
20210222 | GSMaP_Gauge | GSMaP_NOW | GSMaP_NRT | GSMaP_MVK | --- | Cal Uncal | Cal Uncal | --- | --- | --- | --- | IMERG_NRT_E | IMERG_NRT_L | --- | --- | --- | --- | IMERG_NRT_E | IMERG_NRT_L | --- | JMA | --- | --- | --- | --- | 20210222 |
20210221 | GSMaP_Gauge | GSMaP_NOW | GSMaP_NRT | GSMaP_MVK | --- | Cal Uncal | Cal Uncal | --- | --- | --- | --- | IMERG_NRT_E | IMERG_NRT_L | --- | --- | --- | --- | IMERG_NRT_E | IMERG_NRT_L | --- | JMA | --- | --- | --- | --- | 20210221 |
20210220 | GSMaP_Gauge | GSMaP_NOW | GSMaP_NRT | GSMaP_MVK | --- | Cal Uncal | Cal Uncal | --- | --- | --- | --- | IMERG_NRT_E | IMERG_NRT_L | --- | --- | --- | --- | IMERG_NRT_E | IMERG_NRT_L | --- | JMA | --- | --- | --- | --- | 20210220 |
20210219 | GSMaP_Gauge | GSMaP_NOW | GSMaP_NRT | GSMaP_MVK | --- | Cal Uncal | Cal Uncal | --- | --- | --- | --- | IMERG_NRT_E | IMERG_NRT_L | --- | --- | --- | --- | IMERG_NRT_E | IMERG_NRT_L | --- | JMA | --- | --- | --- | --- | 20210219 |
20210218 | GSMaP_Gauge | GSMaP_NOW | GSMaP_NRT | GSMaP_MVK | --- | Cal Uncal | Cal Uncal | --- | --- | --- | --- | IMERG_NRT_E | IMERG_NRT_L | --- | --- | --- | --- | IMERG_NRT_E | IMERG_NRT_L | --- | JMA | --- | --- | --- | --- | 20210218 |
20210217 | GSMaP_Gauge | --- | GSMaP_NRT | GSMaP_MVK | --- | Cal Uncal | Cal Uncal | --- | --- | --- | --- | IMERG_NRT_E | IMERG_NRT_L | --- | --- | --- | --- | IMERG_NRT_E | IMERG_NRT_L | --- | JMA | --- | --- | --- | --- | 20210217 |
20210216 | GSMaP_Gauge | --- | GSMaP_NRT | GSMaP_MVK | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | JMA | --- | --- | --- | --- | 20210216 |
20210215 | GSMaP_Gauge | --- | GSMaP_NRT | GSMaP_MVK | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | JMA | --- | --- | --- | --- | 20210215 |
20210214 | --- | --- | GSMaP_NRT | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | JMA | --- | --- | --- | --- | 20210214 |
20210213 | --- | --- | GSMaP_NRT | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | JMA | --- | --- | --- | --- | 20210213 |
20210212 | --- | --- | GSMaP_NRT | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | JMA | --- | --- | --- | --- | 20210212 |
20210211 | --- | --- | GSMaP_NRT | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | JMA | --- | --- | --- | --- | 20210211 |
20210210 | --- | --- | GSMaP_NRT | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | JMA | --- | --- | --- | --- | 20210210 |
20210209 | --- | --- | GSMaP_NRT | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | JMA | --- | --- | --- | --- | 20210209 |
20210208 | --- | --- | GSMaP_NRT | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | JMA | --- | --- | --- | --- | 20210208 |
20210207 | --- | --- | GSMaP_NRT | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | JMA | --- | --- | --- | --- | 20210207 |
20210206 | --- | --- | GSMaP_NRT | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | JMA | --- | --- | --- | --- | 20210206 |
20210205 | --- | --- | GSMaP_NRT | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | JMA | --- | --- | --- | --- | 20210205 |
20210204 | --- | --- | GSMaP_NRT | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | JMA | --- | --- | --- | --- | 20210204 |
20210203 | --- | --- | GSMaP_NRT | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | JMA | --- | --- | --- | --- | 20210203 |
20210202 | --- | --- | GSMaP_NRT | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | JMA | --- | --- | --- | --- | 20210202 |
20210201 | --- | --- | GSMaP_NRT | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | JMA | --- | --- | --- | --- | 20210201 |
Rain Rate | Correlation | ETS | |||||||||
Bias error | RMS error | POD | FAR | ||||||||
--- | Gauge, PMW, and IR | Blended PMW and IR | Merged PMW Only | IR | IR & VIS | WGNE-NWP | GSMaP hourly | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Valid Date (12-12 UTC) | GSMaP_Gauge | GSMaP_NOW | GSMaP_NRT | GSMaP_MVK | NASA(3B42RT) | NASA(IMERG_NRT_E) | NASA(IMERG_NRT_L) | CPC(CMORPH) | PERSIANN | NRLBLD | NASA(3B40RT) | NASA(IMERG_NRT_E) | NASA(IMERG_NRT_L) | CPC(MWCOMB) | MiRS | MSPPS | NASA(3B41RT) | NASA(IMERG_NRT_E) | NASA(IMERG_NRT_L) | NESDIS(HYDRO) | JMA | ECMWF | GFS | METOFR | BoM | Valid Date |
20210131 | --- | --- | GSMaP_NRT | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | JMA | --- | --- | --- | --- | 20210131 |
20210130 | --- | --- | GSMaP_NRT | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | JMA | --- | --- | --- | --- | 20210130 |
20210129 | --- | --- | GSMaP_NRT | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | JMA | --- | --- | --- | --- | 20210129 |
20210128 | --- | --- | GSMaP_NRT | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | JMA | --- | --- | --- | --- | 20210128 |
20210127 | --- | --- | GSMaP_NRT | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | JMA | --- | --- | --- | --- | 20210127 |
20210126 | --- | --- | GSMaP_NRT | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | JMA | --- | --- | --- | --- | 20210126 |
20210125 | --- | --- | GSMaP_NRT | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | JMA | --- | --- | --- | --- | 20210125 |
20210124 | --- | --- | GSMaP_NRT | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | JMA | --- | --- | --- | --- | 20210124 |
20210123 | --- | --- | GSMaP_NRT | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | JMA | --- | --- | --- | --- | 20210123 |
20210122 | --- | --- | GSMaP_NRT | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | JMA | --- | --- | --- | --- | 20210122 |
20210121 | --- | --- | GSMaP_NRT | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | JMA | --- | --- | --- | --- | 20210121 |
20210120 | --- | --- | GSMaP_NRT | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | JMA | --- | --- | --- | --- | 20210120 |
20210119 | --- | --- | GSMaP_NRT | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | JMA | --- | --- | --- | --- | 20210119 |
20210118 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 20210118 |
20210117 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 20210117 |
20210116 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 20210116 |
20210115 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 20210115 |
20210114 | --- | --- | GSMaP_NRT | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | JMA | --- | --- | --- | --- | 20210114 |
20210113 | --- | --- | GSMaP_NRT | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | JMA | --- | --- | --- | --- | 20210113 |
20210112 | --- | --- | GSMaP_NRT | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | JMA | --- | --- | --- | --- | 20210112 |
20210111 | --- | --- | GSMaP_NRT | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | JMA | --- | --- | --- | --- | 20210111 |
20210110 | --- | --- | GSMaP_NRT | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | JMA | --- | --- | --- | --- | 20210110 |
20210109 | --- | --- | GSMaP_NRT | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | JMA | --- | --- | --- | --- | 20210109 |
20210108 | --- | --- | GSMaP_NRT | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | JMA | --- | --- | --- | --- | 20210108 |
20210107 | --- | --- | GSMaP_NRT | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | JMA | --- | --- | --- | --- | 20210107 |
20210106 | --- | --- | GSMaP_NRT | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | JMA | --- | --- | --- | --- | 20210106 |
20210105 | --- | --- | GSMaP_NRT | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | JMA | --- | --- | --- | --- | 20210105 |
20210104 | --- | --- | GSMaP_NRT | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | JMA | --- | --- | --- | --- | 20210104 |
20210103 | --- | --- | GSMaP_NRT | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | JMA | --- | --- | --- | --- | 20210103 |
20210102 | --- | --- | GSMaP_NRT | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | JMA | --- | --- | --- | --- | 20210102 |
20210101 | --- | --- | GSMaP_NRT | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | JMA | --- | --- | --- | --- | 20210101 |
*Daily validation results are for rain falling between 12 UTC on the previous day and 12 UTC on the specified day.
The Radar-AMeDAS data is produced by the Japan Meteorological Agency (JMA), and provided by Japan Weather Association in accordance with joint study between Japan Aerospace Exploration Agency (JAXA) and Kyoto University.
Validation results can be obtained by contacting Dr. Shige, shige (at) kugi.kyoto-u.ac.jp