EarthCARE/CPR L1B CPR one-sensor Received Echo Power Products and Doppler Product

  • DOI: 10.57746/EO.01jdvcydwjf63vpdbjp0vz6v64
  • Last Updated: 2025-01-15
Data Progress: In Work
G-Portal

Product Summary

EarthCARE/CPR/EarthCARE_CPR L1B received power dataset is obtained from the Cloud Profiling Radar (CPR) sensor onboard Earth Cloud Aerosol and Radiation Explorer (EarthCARE) Satellite and produced by the Japan Aerospace Exploration Agency (JAXA).
EarthCARE Satellite carries four observation sensors: a cloud profiling radar(CPR), an atmospheric lidar(ATLID), a multi-wavelength imager(MSI), and a broadband radiation balance meter(BBR). The main purposes of EarthCARE are to globally observe the distribution and vertical structure of clouds and aerosols (fine particles such as dust and dirt present in the atmosphere), as well as the radiant energy at the top of the atmosphere. The purpose of this project is to contribute to improving the accuracy of climate change prediction by considering the behavior of clouds and aerosols and their impact on the Earth's climate, incorporating the obtained knowledge into numerical climate models, and constraining the large uncertainties in cloud-aerosol-radiation interactions within numerical climate models. EarthCARE Satellite was launched on 28/05/2024(UTC).
EarthCARE Satellite can observe a range from approximately 90 degrees south latitude to approximately 90 degrees north latitude, and flies in a sun-synchronous subrecurrent orbit (number of return days: 25 days) at an altitude of approximately 400 km. The vertical resolution of CPR is approximately 500m.
In CPR level 1B standard processing, a level 1 product is read as input data, and the product outputs data containing a received echo power, radar reflectivity factor, NRCS (normalized surface scattering cross section), doppler velocity, spectrum width, and data flag and geometric information, such as observation positions. 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 file format is HDF5, but it's compatible with NetCDF4. It is divided into header and science data sections. The sampling resolution is 500 m (horizontal) and 500 m (vertical). The generation unit is 1/8 orbit(1 frame).

Platform
EarthCARE
Sensor
EarthCARE CPR

Coverage

Temporal Coverage

2024-06-12 to Present

Spatial Coverage

Bounding Rectangle
(90.0°, -180.0°, -90.0°, 180.0°)

Resolution

750 m

Location

  • GEOGRAPHIC REGION > GLOBAL
Dataset Short Name
EarthCARE_CPR_L1B_CPR_NOM
Platform / Sensor
EarthCARE / EarthCARE CPR
Coverage
Spatial Coverage
Bounding Rectangle
(90.0°, -180.0°, -90.0°, 180.0°)
Temporal Coverage
2024-06-12 to Present
Product Level ID
L1B
Version Description

Ver.C, 2024-06-12, Available

File Format
HDF5
Dataset Type
None / frame
Resolution
Spatial Resolution
750 m
Temporal Resolution
None
Dataset Progress
In Work
Projection
EQR
Collection Data Type
SCIENCE_QUALITY
Get Data
https://gportal.jaxa.jp/gpr/?lang=en
Dataset Title
EarthCARE/CPR L1B CPR one-sensor Received Echo Power Products and Doppler Product
Distribution Format
HDF5
Fees
Free
Citation
Japan Aerospace Exploration Agency. 2024. EarthCARE/CPR L1B CPR one-sensor Received Echo Power Products and Doppler Product. https://doi.org/10.57746/EO.01jdvcydwjf63vpdbjp0vz6v64
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Use Constraints

The users are entitled to use, reprocess and redistribute G-Portal data including commercial use for free except for the condition about acknowledgement of data credit as stipulated in G-Portal terms of use 7.(2).

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G-Portal Terms of service
https://gportal.jaxa.jp/gpr/index/eula?lang=en
ISO Topic Categories
  • CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
  • ENVIRONMENT
Science Keywords
  • EARTH SCIENCE > SPECTRAL/ENGINEERING > RADAR
  • EARTH SCIENCE > SPECTRAL/ENGINEERING > RADAR > RADAR REFLECTIVITY
  • EARTH SCIENCE > SPECTRAL/ENGINEERING > RADAR > RADAR CROSS-SECTION
  • EARTH SCIENCE > SPECTRAL/ENGINEERING > RADAR > DOPPLER VELOCITY
  • EARTH SCIENCE > SPECTRAL/ENGINEERING > RADAR > SPECTRUM WIDTH
Location Keywords
  • GEOGRAPHIC REGION > GLOBAL
ECV and other Keywords
  • Cloud Profiling Radar
  • Received echo power
  • Radar reflectivity factor
  • NRCS (normalized surface scattering cross section)
  • Doppler velocity
  • Spectrum width
  • Data flag

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.

ECV Keywords hosts a physical, chemical or biological variable or a group of linked variables that critically contributes to the characterization of Earth's climate.