Bowman, Kevin: JPL (Project Lead)
Project Funding:
2017 - 2020
NRA: 2016 NASA: Interdisciplinary Research in Earth Science
Funded by NASA
Abstract:
We propose to attribute CO2 interannual variability (IAV) to global spatially-resolved carbon fluxes using a fully integrated carbon cycle data assimilation system (CCDAS), which will ingest a suite of data including atmospheric CO2 and CO, biomass, and vegetation water content to produce spatially resolved estimates of carbon fluxes, pools, plant carbon allocation and residence times. The CCDAS analysis will be validated against independent aircraft, in-situ, and satellite measurements for the exceptional period of 2010-2017. Focusing on the tropics, we will quantify the response of annual and seasonal carbon fluxes to the impact of climate variability, e.g., the lagged effects of drought in one year on the carbon uptake in subsequent years. To understand these responses, we will quantify the relative impact of environmental forcing such as temperature and precipitation as well as spatially-resolved process controls including carbon allocation, turnover and water use strategies on CO2 IAV. This study will gain critical insight into how the frequency and magnitude of climate variations effect the terrestrial tropical carbon cycle and its influence on CO2 IAV. Moreover, the proposed CCDAS establishes a framework that can integrate new NASA atmospheric and land-surface data in the years to come.
Publications:
Bloom, A. A., Bowman, K. W., Liu, J., Konings, A. G., Worden, J. R., Parazoo, N. C., Meyer, V., Reager, J. T., Worden, H. M., Jiang, Z., Quetin, G. R., Smallman, T. L., Exbrayat, J., Yin, Y., Saatchi, S. S., Williams, M., Schimel, D. S. 2020. Lagged effects regulate the inter-annual variability of the tropical carbon balance. Biogeosciences. 17(24), 6393-6422. DOI: 10.5194/bg-17-6393-2020
Konings, A. G., Bloom, A. A., Liu, J., Parazoo, N. C., Schimel, D. S., Bowman, K. W. 2019. Global satellite-driven estimates of heterotrophic respiration. Biogeosciences. 16(11), 2269-2284. DOI: 10.5194/bg-16-2269-2019
More details may be found in the following project profile(s):
