Project Funding: 2015 - 2018

NRA: 2014 NASA: OCO-2 Science Team for the OCO-2 Mission   

Funded by NASA

Abstract:
This proposal outlines a 16 month extension to a project funded through the 2011 “Science Team for the OCO-2 Mission” call. That project is scheduled to end in November 2015, but will be extended through November 2016. The work outlined here extends that project by 16 months, to bring the timing of the project in line with the current funding cycle. The work funded through the 2011 call will expand three existing projects, two of which are funded by NASA, to plan for, and ingest, initial data from OCO-2. The three ongoing projects involve (i) the development of Level 3 mapping tools that will make it possible to create full coverage maps of XCO2 at high spatiotemporal resolution with a rigorous assessment of the associated uncertainties, (ii) the development of data assimilation tools for North America (NA) and the assessment of the incremental value of OCO-2 observations for constraining the NA carbon balance, and (iii) the development of a global, near-real-time data assimilation system with automated data ingestion and anomaly detection that will be extended to ingest OCO-2 data. The work plan for the existing project ends with an exploration of initial XCO2 data from OCO-2. During the 16 month extension, we propose (1) to create and iteratively update (as the retrieval algorithm is updated) global maps of XCO2 for the first two years of the mission, or more as data availability permits, (2) apply the developed covariance quantification and mapping tools to solar induced fluorescence (SIF) data from OCO-2, and create and iteratively update global maps of SIF for the first two years of the mission, or more as data availability permits, and (3) ingest the initial two years of XCO2 data from OCO-2 into the global data assimilation system to obtain global estimates of CO2 fluxes based on OCO-2 data. Together, the extended scope of the project will contribute directly to four of the tasks listed in the call for proposals. Namely, this work will contribute to “Validation strategies for Level 2 products,” � “Performing flux inversion analysis using OCO-2 data,” � “ Analyzing observing strategies for quantification of both sinks and discrete sources,” and “New research and innovative analyses using data from OCO-2.”�

Publications:

Miller, S. M., Michalak, A. M., Detmers, R. G., Hasekamp, O. P., Bruhwiler, L. M. P., Schwietzke, S. 2019. China's coal mine methane regulations have not curbed growing emissions. Nature Communications. 10(1). DOI: 10.1038/s41467-018-07891-7

Shiga, Y. P., Michalak, A. M., Fang, Y., Schaefer, K., Andrews, A. E., Huntzinger, D. H., Schwalm, C. R., Thoning, K., Wei, Y. 2018. Forests dominate the interannual variability of the North American carbon sink. Environmental Research Letters. 13(8), 084015. DOI: 10.1088/1748-9326/aad505

Shiga, Y. P., Tadic, J. M., Qiu, X., Yadav, V., Andrews, A. E., Berry, J. A., Michalak, A. M. 2018. Atmospheric CO 2 Observations Reveal Strong Correlation Between Regional Net Biospheric Carbon Uptake and Solar-Induced Chlorophyll Fluorescence. Geophysical Research Letters. 45(2), 1122-1132. DOI: 10.1002/2017GL076630