Funded by the Keck institute and JPL, we are building a small ground-based network of chlorophyll fluorescence imaging spectrometers. These will be deployed at flux-tower sites in 2016 and research will focus on the relationship between chlorophyll fluorescence (SIF) and carbon exchange measured by flux-towers.
The airborne Chlorophyll Fluorescence Imaging Spectrometer (CFIS) was built at JPL for OCO-2 validation purposes. It is a high-resolution imaging spectrometer, which we optimized for remote sensing of chlorophyll fluorescence. Studies of several flight campaigns over flux-towers and OCO-2 orbit tracks are ongoing.
The Orbiting Carbon Observatory-2 (OCO-2) is a 3-channel grating spectrometer optimized for remote sensing of CO2 using two near-infrared absorption bands and one oxygen channel. Our special interest is in the joint study of CO2 fluxes and chlorophyll fluorescence on a global scale.
We use both satellites (SCIAMACHY, GOSAT, TROPOMI) as well as airborne data (AVIRIS-NG) to study the global and regional budgets of the 2nd most important anthropogenic greenhouse gas.