JpGU-AGU Joint Meeting 2020

Presentation information

[E] Oral

U (Union ) » Union

[U-15] Open Colloquium-NASA/JAXA: Earth Science focusing on Climate Change

Tue. Jul 14, 2020 9:00 AM - 10:30 AM Ch.2

convener:Yamaji Moeka(Japan Aerospace Exploration Agency), Kosuke Yamamoto(Japan Aerospace Exploration Agency), Paula S Bontempi(NASA Headquarters), Sandra Alba Cauffman(NASA Headquarters), Chairperson:Riko Oki(Japan Aerospace Exploration Agency), Sandra Alba Cauffman(NASA Headquarters), Paula S Bontempi(NASA Headquarters), Yamaji Moeka(Japan Aerospace Exploration Agency), Kosuke Yamamoto(Japan Aerospace Exploration Agency)

9:25 AM - 9:45 AM

[U15-02] US-Japan collaboration toward accurate flux estimation of greenhouse gases from space: Intercomparison between US OCO and Japanese GOSAT

★Invited Papers

*Akihiko Kuze1, David Crisp2, Carol Bruegge2, Laura Iraci3, Florian Schwandner3, Fumie Kataoka4, Kei Shiomi1, Nobuhiro Kikuchi1, Hiroshi Suto1 (1.Japan Aerospace Exploration Agency, 2.JPL CALTECH, 3.NASA AMES, 4.RESTEC)

Keywords:GOSAT, OCO, intercomparison

Since the beginning of OCO and GOSAT programs, US and Japan has been collaborating to demonstrate the effectiveness of greenhouse gases monitoring from space. Before OCO and GOSAT launch, we exchanged our radiometric standards to calibrate to calibrate OCO and GOSAT integrating spheres at the JPL and JAXA calibration laboratories in 2008. Since GOSAT launch in 2009, every summer near summer solstice, both teams have worked together in vicarious calibration campaigns at the Railroad Valley (RRV) playa. This field campaign has been improved by adding validation such as coincident spiral flight by NASA Alpha Jet and portable ground-based FTS. After OCO-2 launch, radiance spectra measured and CO2 column amount retrieved from two independent measurements can now be compared. These data agree well within measurement uncertainties for both land and ocean. Our mission is to estimate anthropogenic emissions from different source sectors using satellite data. We will present our challenges how to validation global and local flux.