<codeBook xmlns="ddi:codebook:2_5" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="ddi:codebook:2_5 https://ddialliance.org/Specification/DDI-Codebook/2.5/XMLSchema/codebook.xsd" version="2.5"><docDscr><citation><titlStmt><titl>Global land 1° mapping XCO2 dataset using satellite observations of GOSAT and OCO-2 from 2009 to 2020</titl><IDNo agency="DOI">doi:10.7910/DVN/4WDTD8</IDNo></titlStmt><distStmt><distrbtr source="archive">Harvard Dataverse</distrbtr><distDate>2021-03-26</distDate></distStmt><verStmt source="archive"><version date="2021-08-17" type="RELEASED">4</version></verStmt><biblCit>Sheng,Mengya; Lei,Liping; Zeng,Zhao-Cheng; Weiqiang Rao; Hao Song; Wu,Changjiang, 2021, "Global land 1° mapping XCO2 dataset using satellite observations of GOSAT and OCO-2 from 2009 to 2020", https://doi.org/10.7910/DVN/4WDTD8, Harvard Dataverse, V4</biblCit></citation></docDscr><stdyDscr><citation><titlStmt><titl>Global land 1° mapping XCO2 dataset using satellite observations of GOSAT and OCO-2 from 2009 to 2020</titl><IDNo agency="DOI">doi:10.7910/DVN/4WDTD8</IDNo></titlStmt><rspStmt><AuthEnty affiliation="Aerospace Information Research Institute,Chinese Academy of Sciences">Sheng,Mengya</AuthEnty><AuthEnty affiliation="Aerospace Information Research Institute,Chinese Academy of Sciences">Lei,Liping</AuthEnty><AuthEnty affiliation="Division of Geological and Planetary Sciences, California Institute of Technology">Zeng,Zhao-Cheng</AuthEnty><AuthEnty affiliation="Aerospace Information Research Institute,Chinese Academy of Sciences">Weiqiang Rao</AuthEnty><AuthEnty affiliation="China University of Geosciences, Beijing">Hao Song</AuthEnty><AuthEnty affiliation="Aerospace Information Research Institute,Chinese Academy of Sciences">Wu,Changjiang</AuthEnty></rspStmt><prodStmt><prodDate>2021-01-25</prodDate><grantNo agency="The National Key Research and Development Program of China">2020YFA0607503</grantNo><grantNo agency="The National Key Research and Development Program of China">2016YFA0600303</grantNo></prodStmt><distStmt><distrbtr source="archive">Harvard Dataverse</distrbtr><contact affiliation="Aerospace Information Research Institute,Chinese Academy of Sciences" email="shengmy@radi.ac.cn">Sheng, Mengya</contact><depositr>Sheng, Mengya</depositr><depDate>2021-03-26</depDate><distDate>2021-03-26</distDate></distStmt><holdings URI="https://doi.org/10.7910/DVN/4WDTD8"/></citation><stdyInfo><subject><keyword xml:lang="en">Earth and Environmental Sciences</keyword></subject><abstract date="2021-03-26">The global 1° land mapping XCO2 dataset (Mapping-XCO2) is derived from satellite XCO2 retrievals of GOSAT and OCO-2 spanning the period of April 2009 to December 2020. The data product is provided in GeoTIFF format and include two temporal resolutions: 3 days and month. The 3-day data files include gridded XCO2 and mapping uncertainty, which are named like “MappingXCO2_Date.nc” and “MappingUncertainty_Date.nc”. The flag “Date” is defined as date ID of 1426 time-units started from 20 April 2009. The monthly data files only include XCO2 data and named like “MappingXCO2_YYYY_MM.tif”. The number of “YYYY” and “MM” represent year and month, respectively. The domain of the dataset covers global land ranging from 56° S to 65° N and 169° W to 180° E. The spatial reference of the dataset is Geographic Lat/Lon. The unit of XCO2 data is ppm while the nodata values were assigned to NaN.</abstract><sumDscr><timePrd cycle="P1" event="start" date="2009-04">2009-04</timePrd><timePrd cycle="P1" event="end" date="2020-12">2020-12</timePrd></sumDscr></stdyInfo><method><dataColl><sources/></dataColl><anlyInfo/></method><dataAccs><setAvail/><useStmt/><notes type="DVN:TOU" level="dv">&lt;a href="http://creativecommons.org/publicdomain/zero/1.0">CC0 1.0&lt;/a></notes></dataAccs><othrStdyMat><relPubl><citation><titlStmt><titl>Zeng, Z.C.; Lei, L.; Hou, S.; Ru, F.; Guan, X.; Zhang, B. A Regional Gap-Filling Method Based on Spatiotemporal Variogram Model of Columns. IEEE Trans. Geosci. Remote Sens. 2014, 52, 3594–3603.</titl><IDNo agency="doi">10.1109/TGRS.2013.2273807</IDNo></titlStmt><biblCit>Zeng, Z.C.; Lei, L.; Hou, S.; Ru, F.; Guan, X.; Zhang, B. A Regional Gap-Filling Method Based on Spatiotemporal Variogram Model of Columns. IEEE Trans. Geosci. 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Earth 2017, 10, 426–456.</titl><IDNo agency="doi">10.1080/17538947.2016.1156777</IDNo></titlStmt><biblCit>Zeng, Z.C.; Lei, L.; Strong, K.; Jones, D.B.A.; Guo, L.; Liu, M.; Deng, F.; Deutscher, N.M.; Dubey, M.K.; Griffith, D.W.T.; et al. Global land mapping of satellite-observed CO2 total columns using spatio-temporal geostatistics. Int. J. Digit. Earth 2017, 10, 426–456.</biblCit></citation></relPubl><relPubl><citation><titlStmt><titl>He, Z.; Lei, L.; Welp, L.R.; Zeng, Z.C.; Bie, N.; Yang, S.; Liu, L. Detection of Spatiotemporal Extreme Changes in Atmospheric CO2 Concentration Based on Satellite Observations. Remote Sens. 2018, 10, 839.</titl><IDNo agency="doi">10.3390/rs10060839</IDNo></titlStmt><biblCit>He, Z.; Lei, L.; Welp, L.R.; Zeng, Z.C.; Bie, N.; Yang, S.; Liu, L. Detection of Spatiotemporal Extreme Changes in Atmospheric CO2 Concentration Based on Satellite Observations. Remote Sens. 2018, 10, 839.</biblCit></citation></relPubl><relPubl><citation><titlStmt><titl>He, Z.; Lei, L.; Zhang, Y.; Sheng, M.; Wu, C.; Li, L.; Zeng, Z.-C.; Welp, L.R. Spatio-Temporal Mapping of Multi-Satellite Observed Column Atmospheric CO2 Using Precision-Weighted Kriging Method. Remote Sens. 2020, 12, 576.</titl><IDNo agency="doi">10.3390/rs12030576</IDNo></titlStmt><biblCit>He, Z.; Lei, L.; Zhang, Y.; Sheng, M.; Wu, C.; Li, L.; Zeng, Z.-C.; Welp, L.R. Spatio-Temporal Mapping of Multi-Satellite Observed Column Atmospheric CO2 Using Precision-Weighted Kriging Method. Remote Sens. 2020, 12, 576.</biblCit></citation></relPubl><relPubl><citation><titlStmt><titl>He, Z.; Lei, L.; Zeng, Z.C.; Sheng, M.; Welp, L.R. Evidence of Carbon Uptake Associated with Vegetation Greening Trends in Eastern China. Remote Sens. 2020, 12, 718.</titl><IDNo agency="doi">10.3390/rs12040718</IDNo></titlStmt><biblCit>He, Z.; Lei, L.; Zeng, Z.C.; Sheng, M.; Welp, L.R. Evidence of Carbon Uptake Associated with Vegetation Greening Trends in Eastern China. Remote Sens. 2020, 12, 718.</biblCit></citation></relPubl></othrStdyMat></stdyDscr><otherMat ID="f4986575" URI="https://dataverse.harvard.edu/api/access/datafile/4986575" level="datafile"><labl>MappingXCO2_3days.rar</labl><notes level="file" type="DATAVERSE:CONTENTTYPE" subject="Content/MIME Type">application/x-rar-compressed</notes></otherMat><otherMat ID="f4986574" URI="https://dataverse.harvard.edu/api/access/datafile/4986574" level="datafile"><labl>MappingXCO2_month.rar</labl><notes level="file" type="DATAVERSE:CONTENTTYPE" subject="Content/MIME Type">application/x-rar-compressed</notes></otherMat></codeBook>