Japan Geoscience Union Meeting 2018

Presentation information

[JJ] Oral

A (Atmospheric and Hydrospheric Sciences) » A-CG Complex & General

[A-CG40] Material Circulations in Land Ecosystems

Thu. May 24, 2018 1:45 PM - 3:15 PM 106 (1F International Conference Hall, Makuhari Messe)

convener:Tomomichi Kato(Research Faculty of Agriculture, Hokkaido University), Takashi Hirano(Research Faculty of Agriculture, Hokkaido University), Hisashi Sato(海洋研究開発機構 地球表層物質循環研究分野, 共同), Ryuichi Hirata(National Institute for Environmental Studies), Chairperson:Kato Tomomichi(Hokkaido University)

2:00 PM - 2:15 PM

[ACG40-08] Contribution of SIF observed by GOSAT to estimate GPP and availability to terrestiral ecosystem model

*Tatsuya Miyauchi1, Makoto Saito1, Noda M Hibiki1, Yukio Yoshida1, Haruki Oshio1, Akihiko Ito1 (1.National Institute for Environmental Studies)

Keywords:Solar-induced chlorophyll fluorescence, terrestrial ecosystem model, GOSAT, random forest regression, GPP, carbon cycle

Many studies about GPP estimation and the improvement of terrestrial ecosystem model simulation using solar-induced chlorophyll fluorescence (SIF) were reported after SIF was known that it was obtained from GOSAT's spectrum data. GOSAT-2 is planned launching in 2018 and the improvement of terrestrial ecosystem model for reliability of L4 product (global GHG flux and distribution) using SIF is required. In this presentation, we will report about SIF by GOSAT, comparison of SIF and observed GPP, and contribution of SIF to estimate GPP by machine learning (random forest regression) as preparation for GOSAT-2. Moreover, we will report about the removal method of random noise on SIF observed by GOSAT and the problems on the usage of SIF to models.