edu.ucar.opensky::articles:19763 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-26T02:31:17.470302 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d7sn0bwm https://doi.org/10.14291/tccon.ggg2014.lamont01.R0/1149159 https Related Dataset #1 TCCON data from Lamont (US), Release GGG2014.R0 https://doi.org/10.3334/OBSPACK/1001 https Related Dataset #2 obspack_co2_1_PROTOTYPE_v1.0.4b_2014-02-13 Lower-tropospheric CO2 from near-infrared ACOS-GOSAT observations 2017-04-27T00:00:00Z publication https://n2t.org/ark:/85065/d7sn0bwm https://doi.org/10.5194/acp-17-5407-2017 Kulawik, S. S. author O'Dell, C. author Payne, V. H. author Kuai, L. author Worden, Helen M. author Biraud, S. C. author Sweeney, C. author Stephens, Britton author Iraci, L. T. author Yates, E. L. author Tanaka, T. author UCAR/NCAR - Library publisher We present two new products from near-infrared Greenhouse Gases Observing Satellite (GOSAT) observations: lowermost tropospheric (LMT, from 0 to 2.5 km) and upper tropospheric-stratospheric (U, above 2.5 km) carbon dioxide partial column mixing ratios. We compare these new products to aircraft profiles and remote surface flask measurements and find that the seasonal and year-to-year variations in the new partial column mixing ratios significantly improve upon the Atmospheric CO2 Observations from Space (ACOS) and GOSAT (ACOS-GOSAT) initial guess and/or a priori, with distinct patterns in the LMT and U seasonal cycles that match validation data. For land monthly averages, we find errors of 1.9, 0.7, and 0.8 ppm for retrieved GOSAT LMT, U, and X CO2; for ocean monthly averages, we find errors of 0.7, 0.5, and 0.5 ppm for retrieved GOSAT LMT, U, and X CO2. In the southern hemispheric biomass burning season, the new partial columns show similar patterns to MODIS fire maps and MOPITT multispectral CO for both vertical levels, despite a flat ACOS-GOSAT prior, and a CO-CO2 emission factor comparable to published values. The difference of LMT and U, useful for evaluation of model transport error, has also been validated with a monthly average error of 0.8 (1.4) ppm for ocean (land). LMT is more locally influenced than U, meaning that local fluxes can now be better separated from CO2 transported from far away. UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact PDF Text theme Resource Type 2016-01-01T00:00:00Z publication Copyright Author(s) 2017. This work is distributed under the Creative Commons Attribution 3.0 License. None eng geoscientificInformation