Aqua/AMSR-E L1R AMSR2 Format Brightness Temperature

  • DOI: 10.57746/EO.01gs73awzt1mw2ctagxb6b2bqt
  • Last Updated: 2023-02-14
Data Progress: Complete
G-Portal

Product Summary

Aqua/AMSR-E L1R AMSR2 Format Brightness Temperature dataset is obtained from the AMSR-E sensor onboard Aqua and produced by the Japan Aerospace Exploration Agency (JAXA).
Aqua of NASA was launched on May 4th, 2002 in Sun-synchronous sub-recurrent Orbit. Aqua observes various kinds of physical phenomena related to water and energy circulation from space. Aqua data promoted the research activities for interactions between the atmosphere, oceans and lands, and their effects on climate changes.
AMSR-E scans the Earth's surface by mechanically rotating the antenna and acquires radiance data of the Earth's surface. Each frequency band is monitored by vertical and horizontal polarized wave. It conically scans and keeps an angle of incidence on the earth surface (a nominal of 55 degrees) and accomplishes a swath width of about 1450 km. The AMSR-E reached its limit to maintain the antenna rotation speed necessary for regular observations, and the AMSR-E restarted its observation in slow rotation mode (2 rotations per minute) on December 4, 2012. However, the AMSR-E reached its limit to maintain the antenna rotation speed necessary for slow rotation mode and it automatically halted its observation and rotation on December 4, 2015.
Level 1R AMSR2 Format Brightness Temperature data is converted from Level 1B data. Data are resampled with equal footprint size for each frequency. The physical quantity unit is Kelvin.
For AMSR/AMSR-E, they correspond to brightness temperatures. Data location and quality information are also included. Data are not map-projected, but stored in the swath format. L1B and L1R products also include information of data geolocation and quality.
The provided format is HDF5. The current version of the product is "Version 4". The generation unit is scene (defined as a half orbit).

Platform
Aqua
Sensor
AMSR-E

Coverage

Temporal Coverage

2002-06-01 to 2011-10-05

Spatial Coverage

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

Resolution

Location

  • GLOBAL > GLOBAL
Dataset Short Name
Aqua_AMSR-E_L1R_AMSR2_Format_TB
Platform / Sensor
Aqua / AMSR-E
Coverage
Spatial Coverage
Bounding Rectangle
(90.0°, -180.0°, -90.0°, 180.0°)
Temporal Coverage
2002-06-01 to 2011-10-05
Product Level ID
L1R
Version Description

Version 1, 2003-06-18, Notavailable
Version 2, 2005-03-01, Notavailable
Version 3, 2011-09-29, Notavailable
Version 4, 2018-04-02, Available

File Format
HDF5
Dataset Type
None / Scene
Resolution
Spatial Resolution
Temporal Resolution
None
Dataset Progress
Complete
Projection
None
Collection Data Type
SCIENCE_QUALITY
Get Data
https://gportal.jaxa.jp/gpr/?lang=en
Dataset Title
Aqua/AMSR-E L1R AMSR2 Format Brightness Temperature
Distribution Format
HDF5
Fees
Free
Citation
Japan Aerospace Exploration Agency. 2002. Aqua/AMSR-E L1R AMSR2 Format Brightness Temperature. https://doi.org/10.57746/EO.01gs73awzt1mw2ctagxb6b2bqt
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
  • IMAGERY/BASE MAPS/EARTH COVER
Science Keywords
  • EARTH SCIENCE > SPECTRAL/ENGINEERING > MICROWAVE > BRIGHTNESS TEMPERATURE
Location Keywords
  • GLOBAL > 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.