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Proceedings Paper

Status of AMSR2 instrument on GCOM-W1
Author(s): Keiji Imaoka; Takashi Maeda; Misako Kachi; Marehito Kasahara; Norimasa Ito; Keizo Nakagawa
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Paper Abstract

The Global Change Observation Mission (GCOM) consists of two polar orbiting satellite observing systems, GCOM-W (Water) and GCOM-C (Climate), and three generations to achieve global and long-term monitoring of the Earth. GCOM-W1, the first satellite of the GCOM-W series, was successfully launched on May 18, 2012 (Japan Standard Time). The Advanced Microwave Scanning Radiometer-2 (AMSR2), which is a successor of AMSR on the Advanced Earth Observing Satellite-II (ADEOS-II) and AMSR for EOS (AMSR-E) on NASA’s Aqua satellite, is a single mission instrument on GCOM-W1. Basic characteristics of AMSR2 is similar to that of AMSR-E to continue the AMSR-E observations, with several enhancements including larger main reflector (2.0 m), additional channels at the C-band frequency band, and improved calibration system. AMSR-E halted its observation on October 4, 2011 due to the increase of antenna rotation torque, which is considered as the typical aging effect. Although all the efforts are being made to resume the AMSR-E observation, early initiation of the AMSR2 observation has been highly desired. After the completion of the orbit injection into the A-Train constellation, AMSR2 started rotating and initiated global observation. During the initial calibration and validation phase, brightness temperatures will be evaluated and characterized through methodologies such as the inter-calibration among similar microwave radiometers including the TRMM Microwave Imager (TMI) and WindSat on Coriolis mission.

Paper Details

Date Published: 9 November 2012
PDF: 6 pages
Proc. SPIE 8528, Earth Observing Missions and Sensors: Development, Implementation, and Characterization II, 852815 (9 November 2012); doi: 10.1117/12.977774
Show Author Affiliations
Keiji Imaoka, Japan Aerospace Exploration Agency (Japan)
Takashi Maeda, Japan Aerospace Exploration Agency (Japan)
Misako Kachi, Japan Aerospace Exploration Agency (Japan)
Marehito Kasahara, Japan Aerospace Exploration Agency (Japan)
Norimasa Ito, Japan Aerospace Exploration Agency (Japan)
Keizo Nakagawa, Japan Aerospace Exploration Agency (Japan)


Published in SPIE Proceedings Vol. 8528:
Earth Observing Missions and Sensors: Development, Implementation, and Characterization II
Haruhisa Shimoda; Xiaoxiong Xiong; Changyong Cao; Xingfa Gu; Choen Kim; A. S. Kiran Kumar, Editor(s)

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