Journal
NATURE CLIMATE CHANGE
Volume 7, Issue 2, Pages 148-+Publisher
NATURE PORTFOLIO
DOI: 10.1038/NCLIMATE3204
Keywords
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Funding
- Princeton University
- Finnish Society of Sciences and Letters
- NSF-DEB [1550932]
- USDA [MONZ-1302]
- NOAA global change fellowship
- Luc Hoffman Fellowship
- NASA [NNX08AG87A]
- Direct For Biological Sciences
- Division Of Environmental Biology [1550932] Funding Source: National Science Foundation
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The recent ` warming hiatus' presents an excellent opportunity to investigate climate sensitivity of carbon cycle processes. Here we combine satellite and atmospheric observations to show that the rate of net biome productivity (NBP) has significantly accelerated from 0.007 +/- 0.065 PgC yr(-2) over thewarming period (1982 to 1998) to 0.119 +/- 0.071 PgC yr(-2) over thewarming hiatus (1998-2012). This acceleration in NBP is not due to increased primary productivity, but rather reduced respiration that is correlated (r = 0.58; P = 0.0007) and sensitive (gamma = 4.05 to 9.40 PgC yr(-1) per degrees C) to land temperatures. Global land models do not fully capture this apparent reduced respiration over the warming hiatus; however, an empirical model including soil temperature and moisture observations better captures the reduced respiration.
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