Constraining estimates of terrestrial carbon uptake: new opportunities using long‐term satellite observations and data assimilation
2019; Wiley; Volume: 225; Issue: 1 Linguagem: Inglês
10.1111/nph.16055
ISSN1469-8137
AutoresWilliam K. Smith, A. M. Fox, Natasha MacBean, D. J. Moore, Nicholas C. Parazoo,
Tópico(s)Solar Radiation and Photovoltaics
ResumoSummary The response of terrestrial carbon uptake to increasing atmospheric [ CO 2 ], that is the CO 2 fertilization effect ( CFE ), remains a key area of uncertainty in carbon cycle science. Here we provide a perspective on how satellite observations could be better used to understand and constrain CFE . We then highlight data assimilation ( DA ) as an effective way to reconcile different satellite datasets and systematically constrain carbon uptake trends in Earth System Models. As a proof‐of‐concept, we show that joint DA of multiple independent satellite datasets reduced model ensemble error by better constraining unobservable processes and variables, including those directly impacted by CFE . DA of multiple satellite datasets offers a powerful technique that could improve understanding of CFE and enable more accurate forecasts of terrestrial carbon uptake.
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