Publications

Hwang, YS; Schluter, S; Um, JS (2022). Spatial Cross-Correlation of GOSAT CO2 Concentration with Repeated Heat Wave-Induced Photosynthetic Inhibition in Europe from 2009 to 2017. REMOTE SENSING, 14(18), 4536.

Abstract
In recent decades, European countries have faced repeated heat waves. Traditionally, atmospheric CO2 concentration linked to repeated heat wave-induced photosynthetic inhibition has been explored based on local-specific in-situ observations. However, previous research based on field surveys has limitations in exploring area-wide atmospheric CO2 concentrations linked to repeated heat wave-induced photosynthetic inhibition. The present study aimed to evaluate the spatial cross-correlation of Greenhouse gases Observing SATellite (GOSAT) CO2 concentrations with repeated heat wave-induced photosynthetic inhibition in Europe from 2009 to 2017 by applying geographically weighted regression (GWR). The local standardized coefficient of a fraction of photosynthetically active radiation (FPAR: -0.24) and the normalized difference vegetation index (NDVI: -0.22) indicate that photosynthetic inhibition increases atmospheric CO2 in Europe. Furthermore, from 2009 to 2017, the heat waves in Europe contributed to CO2 emissions (27.2-32.1%) induced by photosynthetic inhibition. This study provides realistic evidence to justify repeated heat wave-induced photosynthetic inhibition as a fundamental factor in mitigating carbon emissions in Europe.

DOI:
10.3390/rs14184536

ISSN:
2072-4292