| |
| Name | The Japanese 55-year Reanalysis (JRA-55) |
| Metadata Identifier | JRA5520240221120009-DIAS20221121113753-en |
| Name | Numerical Prediction Division, Information Infrastructure Department |
|---|---|
| Organization | Japan Meteorological Agency |
| Address | 3-6-9 Toranomon, Minato City, Tokyo, 105-8431, Japan |
| jra@met.kishou.go.jp |
| Name | DIAS Office |
|---|---|
| Organization | Japan Agency for Marine-Earth Science and Technology |
| Address | 3173-25, Showa-Cho, Kanazawa-ku, Yokohama-shi, Kanagawa, 236-0001, Japan |
| dias-office@diasjp.net |
| Name | Numerical Prediction Division, Information Infrastructure Department |
|---|---|
| Organization | Japan Meteorological Agency |
| Name | Numerical Prediction Division, Information Infrastructure Department |
|---|---|
| Organization | Japan Meteorological Agency |
publication : 2013-10-01
Reanalysis of long-term records of past observations with a state-of-the-art numerical analysis and weather prediction (NWP) system aims at producing a high quality, honogeneous data set for climate variables such as temperature and precipitation.
The Japan Meteorological Agency has conducted the second reanalysis project named the Japanese 55-year Reanalysis (JRA-55) using a more sophisticated NWP system, which is based on the operational system as of December 2009, and newly prepared past observations. The reanalysis period has been extended covering the period from 1958 to 2012. JRA-55 is a data set that aims at reproducing the climate change over the past half century more accurately.
climatologyMeteorologyAtmosphere
| Begin Date | 1958-01-01 |
| End Date | 2024-02-02 |
| North bound latitude | 90 |
| West bound longitude | -180 |
| Eastbound longitude | 180 |
| South bound latitude | -90 |
| Dimension Name | Dimension Size (slice number of the dimension) | Resolution Unit |
|---|---|---|
| row | 288 | 1.25 (deg) |
| column | 145 | 1.25 (deg) |
| vertical | 37 | 1-50 (hPa) |
| Keyword Type | Keyword | Keyword thesaurus Name |
|---|---|---|
| theme | [Atmosphere  ] |
GCMD_science |
| theme | Aircraft, Balloons/Rockets, Earth Observation Satellites, In Situ Land-based Platforms, In Situ Ocean-based Platforms, Models > , Navigation Platforms | GCMD_platform |
| theme | Climate, Weather | GEOSS |
| Keyword Type | Keyword | Keyword thesaurus Name |
|---|---|---|
| theme | DIAS > Data Integration and Analysis System | No_Dictionary |
JRA project website : http://jra.kishou.go.jp/
JRA-55 Product Users Handbook (in English) : http://jra.kishou.go.jp/JRA-55/index_en.html#manual
JRA-55 Product Users Handbook (in Japanese) : http://jra.kishou.go.jp/JRA-55/index_ja.html#manual
file download : https://data.diasjp.net/dl/storages/filelist/dataset:204
Quality issues (in English) : http://jra.kishou.go.jp/JRA-55/index_en.html#quality
Quality issues (in Japanese) : http://jra.kishou.go.jp/JRA-55/index_ja.html#quality
| name | version | specification |
|---|---|---|
| GRIB | 1 |
In the report released on 2 October 2018, JMA announced that a part of the Japanese 55-year Reanalysis (JRA-55) product was missing, of which values were set to zero.
Those missing data has been replaced with corrected data. (2018-10-15)
It was recently found that a part of the Japanese 55-year Reanalysis
(JRA-55) product was missing, of which values were set to zero. Those
missing data are as follows. Product : fcst_surf125 (1.25-degree two-dimensional instantaneous diagnostic fields)
Period : from 4 June 2018 onward
Parameters : pressure reduced to MSL, total cloud cover, high cloud cover, medium cloud cover, and low cloud cover
The above mentioned product will be replaced with corrected data shortly,
which will be announced separately on the JRA-55 website. In the meantime,
users are advised to refrain from using those data. (2018-10-02)
(1) Users should provide user information including name, affiliation, e-mail address and purpose of data use.
(2) Users should not distribute the Products to any third party without JMA's prior consent. Use of the Products for any commercial purposes is also prohibited.
(3) The source of the Products should be duly acknowledged in scientific or technical papers, publications, press releases or other communications regarding the Products.
(4) Users should provide JMA with a copy of their scientific or technical papers, publications, press releases or other communications regarding the Products.
Disclaimer
Please note that although JMA has paid the closest attention to produce the Products, JMA assumes no responsibility regarding the reliability of the Products. JMA is not responsible to you for any damage that may be caused by the use of the Products on this site.
If data provider does not have data policy, DIAS Terms of Service (https://diasjp.net/en/terms/) and DIAS Privacy Policy (https://diasjp.net/en/privacy/) apply.
If there is a conflict between DIAS Terms of Service and data provider's policy, the data provider's policy shall prevail.
The source of the Products should be duly acknowledged in scientific or technical papers, publications, press releases or other communications regarding the Products.
Example:
The datasets used for this study are provided from the Japanese 55-year Reanalysis (JRA-55) project carried out by the Japan Meteorological Agency (JMA).
If you plan to use this dataset for a conference presentation, paper, journal article, or report etc., please include acknowledgments referred to following examples. If the data provider describes examples of acknowledgments, include them as well.
" In this study, [Name of Dataset] provided by [Name of Data Provider] was utilized. This dataset was also collected and provided under the Data Integration and Analysis System (DIAS), which was developed and operated by a project supported by the Ministry of Education, Culture, Sports, Science and Technology. "
Kobayashi, S., Y. Ota, H. Harada, A. Ebita, M. Moriya, H. Onoda, K. Onogi, H. Kamahori, C. Kobayashi, H. Endo, K. Miyaoka, and K. Takahashi, 2015: The JRA-55 Reanalysis: General Specifications and Basic Characteristics, J. Met. Soc. Japan, 93, 5-48, doi: 10.2151/jmsj.2015-001.