Comment on “Recent global decline of CO 2 fertilization effects on vegetation photosynthesis” | Zendy

Christian Frankenberg | Zendy; Yi Yin | Zendy; Brendan Byrne | Zendy; Liyin He | Zendy; Pierre Gentine | Zendy

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Comment on “Recent global decline of CO ₂ fertilization effects on vegetation photosynthesis”

Author(s) -

Christian Frankenberg,

Yi Yin,

Brendan Byrne,

Liyin He,

Pierre Gentine

Publication year - 2021

Publication title -

science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 12.556

H-Index - 1186

eISSN - 1095-9203

pISSN - 0036-8075

DOI - 10.1126/science.abg2947

Subject(s) - advanced very high resolution radiometer , vegetation (pathology) , environmental science , photosynthesis , satellite , radiometer , human fertilization , remote sensing , global change , physical geography , climatology , atmospheric sciences , geography , agronomy , ecology , biology , geology , botany , climate change , physics , medicine , pathology , astronomy

Wanget al . (Research Articles, 11 December 2020, p. 1295), using photosynthesis proxies from long-term satellite records, report a significant decline in CO2 fertilization effects. We find that small systematic biases in Advanced Very High Resolution Radiometer (AVHRR) data affect their analysis to the degree that the key finding is not robust. Caution is recommended when using AVHRR to detect changes in near-infrared reflectance of vegetation (NIRv) trends and vegetation indices.

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