Aqua/AMSR-E L3 AMSR2 Format 36.5GHz Mean for Brightness Temperature (1-Month, 0.1 deg)

  • DOI: 10.57746/EO.01gs73ayk0xgm3s728z2r31q34
  • Last Updated: 2023-02-14
Data Progress: Complete
G-Portal

Product Summary

Aqua/AMSR-E L3 AMSR2 Format 36.5GHz Mean for Brightness Temperature (1-Month, 0.1 deg) 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 3 data inputs level 1B and level 2 data and projected to the map in accordance with the specified projection technique (Equi-Rectangular (EQR) or Polar Stereographic (PS)), and then averaged temporally and spatially. These statistical values are computed for observation data on ascending orbit and descending orbit respectively.
This product includes monthly mean Brightness Temperature at 36.5GHz (Brightness_Temperature_(H), Brightness_Temperature_(H)). Values that are calculated from sensor counts and are proportional to the power of observed electromagnetic wave. Unit is Kelvin. Horizontal polarized wave and vertical polarized wave are stored separately.
The following Static information is included:
Standard_Deviation: standard deviation value for each pixel. This item is only stored in monthly product.
Average_Number: the number of valid physical quantity data (except error and missing) which was used to determine "Geophysical Data".
Total_Number: the number of physical quantity data included in the grid (include valid and invalid).
The provided format is HDF5. The spatial resolution is 0.1 deg. The statistical period is 1 month. The current version of the product is "Version 4". The projection method is EQR and PS. The generation unit is global.

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

0.1 deg

Location

  • GLOBAL > GLOBAL
Dataset Short Name
Aqua_AMSR-E_L3_AMSR2_Format_TB_36.5GHz_1month_0.1deg
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
L3
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
1month / Global
Resolution
Spatial Resolution
0.1 deg
Temporal Resolution
1month
Dataset Progress
Complete
Projection
EQR and PS
Collection Data Type
SCIENCE_QUALITY
Get Data
https://gportal.jaxa.jp/gpr/?lang=en
Dataset Title
Aqua/AMSR-E L3 AMSR2 Format 36.5GHz Mean for Brightness Temperature (1-Month, 0.1 deg)
Distribution Format
HDF5
Fees
Free
Citation
Japan Aerospace Exploration Agency. 2002. Aqua/AMSR-E L3 AMSR2 Format 36.5GHz Mean for Brightness Temperature (1-Month, 0.1 deg). https://doi.org/10.57746/EO.01gs73ayk0xgm3s728z2r31q34
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.