GPM/DPR/KaPR L1B Received Power
- DOI: 10.57746/EO.01gs73b2n927g7csbr3beh2fx5
- Last Updated: 2023-02-14
Product Summary
GPM/DPR/KaPR L1B Received Power dataset is obtained from the Dual-frequency Precipitation Radar (DPR) sensor onboard Global Precipitation Measurement (GPM) Core Satellite and produced by the Japan Aerospace Exploration Agency (JAXA). GPM Core Satellite carries DPR and a GPM Microwave Imager (GMI). Main purposes of the GPM are "Comprehension of horizontal and vertical structure of precipitation systems", "Acquisition of precipitation particles information" and "Improvement of accuracy of precipitation by constellation satellites". GPM Core Satellite can observe the range from the south latitude about 65 degrees to the north latitude about 65 degrees, and flies Non-Sun-synchronous Circular Orbit at about the 407 km altitude. To keep the altitude, the Core Satellite does the orbit maintenance maneuver. The interval is about 7-10 days. The swaths of DPR instrument are 125 and 245 km (78 and 152 mile) (245 km since May 21, 2018) for a Ka-band precipitation radar (KaPR) and a Ku-band precipitation radar (KuPR) respectively.
In addition, simultaneous measurements are done at the overlapping of Ka/Ku-bands of the DPR. The GMI instrument is a conical-scanning multi-channel microwave radiometer covering a swath of 904 km (565 miles). In DPR level 1B standard processing, a level 1A product is read as input data and a product containing a received power profile and geometric information, such as observation positions, is outputted. During the course of processing, radiometric correction is carried out, missing data is processed based on missing data information, scan time is corrected and geometric calculation of the time, latitude, longitude, and height of each piece of scan data in each range bin is performed.
The provided format is HDF5. The Sampling resolution are 5km(horizontal) and 125/250m(vertical). The current version of the product is Version 7. The Version 5 is also available. The generation unit is one orbit.
- Platform
- GPM
- Sensor
- DPR
Coverage
Temporal Coverage
2014-03-08 to Present
Spatial Coverage
Bounding Rectangle
(67.0°,
-180.0°,
-67.0°,
180.0°)
Resolution
5 km
Location
- GEOGRAPHIC REGION > GLOBAL
- Dataset Short Name
- GPM_DPR_KaPR_L1B_DAB
- Platform / Sensor
- GPM / DPR
- Coverage
-
- Spatial Coverage
-
Bounding Rectangle
(67.0°, -180.0°, -67.0°, 180.0°) - Temporal Coverage
- 2014-03-08 to Present
- Product Level ID
- L1B
- Version Description
Version 05, 2017-05-09, Available
Version 07, 2021-12-06, Available- File Format
- HDF5
- Dataset Type
- None / Orbit
- Resolution
-
- Spatial Resolution
- 5 km
- Temporal Resolution
- None
- Dataset Progress
- In Work
- Projection
- None
- Collection Data Type
- SCIENCE_QUALITY
- Get Data
- https://gportal.jaxa.jp/gpr/?lang=en
- Dataset Title
- GPM/DPR/KaPR L1B Received Power
- Distribution Format
- HDF5
- Fees
- Free
- Citation
- Japan Aerospace Exploration Agency. 2014. GPM/DPR/KaPR L1B Received Power. https://doi.org/10.57746/EO.01gs73b2n927g7csbr3beh2fx5
- Access Constraints
No constraints but users need to be registered with the G-portal User Registration system to download files.
- Use Constraints
The user is entitled to use G-Portal data free of charge without any restrictions (including commercial use) except for the condition about acknowledgement of data credit as stipulated in G-portal terms of use 7.(2).Click here for detailed G-Portal data usage constrains.
- G-Portal Terms of service
- https://gportal.jaxa.jp/gpr/index/eula?lang=en
- ISO Topic Categories
-
- CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
- Science Keywords
-
- EARTH SCIENCE > SPECTRAL/ENGINEERING > RADAR > RADAR REFLECTIVITY
- Location Keywords
-
- GEOGRAPHIC REGION > GLOBAL
ISO Topic Categories is the keywords in the ISO 19115 - Geographic Information Metadata.
Science Keywords hosts Global Change Master Directory (GCMD) Keywords which are a hierarchical set of controlled Earth Science vocabularies that help ensure Earth science data, services, and variables are described in a consistent and comprehensive manner and allow for the precise searching of metadata and subsequent retrieval of data, services, and variables.