Greenhouse Gases and Satellite Methods

In Greenhouse Gases and Satellite Methods group, we study the distribution of atmospheric greenhouse gases – mainly carbon dioxide and methane – through both space-based and ground-based remote sensing.

Background shows one month of OCO-2 SIF retrievals in July 2018. Solar-induced chlorophyll fluorescence (SIF) is emission from vegetation in the far-red to near-infrared wavelengths. SIF has proven to be a powerful Gross Primary Production (GPP) proxy especially in large scales but also in short temporal scales. One OCO-2 satellite measurement covers about 1.2 km x 2.25 km. Picture courtesy of Hannakaisa Lindqvist, FMI.

We utilize and develop extensive ground-based greenhouse gas measurements at Sodankylä in Northern Finland.
These measurements provide an essential validation source for increasing volumes of satellite observations at high latitudes, e.g.
- JaXa GOSAT, NASA OCO-2, ESA Sentinel 5P TROPOMI
One of our focus areas is to develop methods for satellite-data driven estimations of greenhouse gas sources and sinks.
We also investigate and develop mathematical methods for time series analysis, data assimilation, data fusion, and satellite data interpretation, including uncertainty quantification.
The group is part of the Academy of Finland Centre of Excellence in Inverse Modeling and Imaging.