2024-03-29T09:13:38Zhttp://nsidc.org/api/dataset/metadata/oaioai:nsidc.org/GGD6502024-02-26T18:16:02Zv0_otherv0_allfgdc
GGD650Northern Hemisphere Seasonal and Intermittent Frozen Ground Areas 1901-2001T. Zhang, J. SmithNorthern Hemisphere Seasonal and Intermittent Frozen Ground Areas 1901-20012006-01-01Boulder, Colorado USANSIDC: National Snow and Ice Data Center1false10.7265/37tw-0059https://doi.org/10.7265/37tw-0059GGD650Technical ContactNSIDCUser Servicesnsidc@nsidc.org1-303-492-61991-303-492-2468CIRES, 449 UCBUniversity of ColoradoBoulderCO80309-0449USAInvestigatorTingjunZZhangnsidc@nsidc.org1-303-492-61991-303-492-2359UCB449BoulderColorado80309-0449USAEARTH SCIENCELand SurfaceFrozen GroundSeasonally Frozen Ground Freezing/Thawing IndexEARTH SCIENCECryosphereFrozen GroundSeasonally Frozen Ground SEASONALLY FROZEN GROUNDGeoscientific Informationintermittently frozen ground1901-01-012002-12-31complete090-180180Geographic RegionArctic25 km25 km1 yearEnglishFGDCFGDCFrozen Ground Data Centerhttp://nsidc.org/fgdc/Data Center ContactFGDCUser Servicesnsidc@nsidc.org1-303-492-61991-303-492-2468National Snow and Ice Data CenterCIRES, 449 UCBUniversity of ColoradoBoulderCO80309-0449USAFTP20 KBASCIIZhang, T., R. G. Barry, K. Knowles, F. Ling, and R. L. Armstrong. 2003. Distribution of seasonally and perennially frozen ground in the Northern Hemisphere. in Phillips, M., S. M. Springman, and L. U. Arenson (editors). 2003. Permafrost: Proceedings of the Eighth International Conference on Permafrost, 21-25 July 2003, Zurich, Switzerland. Lisse, The Netherlands: A.A. Balkema. Mitchell T. D. and P. D. Jones. 2005. An improved method of constructing a database of monthly climate observations and associated high-resolution grids. International Journal of Climatology 25, 693-712.This data set contains monthly values of the total exposed land area of seasonally frozen ground and
annual values for intermittently frozen ground in the Northern Hemisphere. Seasonally frozen ground is
defined as the near-surface soil that experiences freeze for more than 15 days per year, while intermittently frozen ground experiences fewer than 15 days of freeze per year. The values were
calculated based upon the monthly mean air temperature from the 1901-2002, 0.5 deg. global land
temperatures from the University of East Anglia Climate Research Unit (Mitchell and Jones, 2005) using
the technique described by Zhang, et al. (2003).
Two ASCII files are available. One file contains monthly values of seasonally frozen ground area in
square kilometers for 1901-2001. The other file contains annual values of intermittently frozen ground
area. Data are available via FTP.VIEW RELATED INFORMATIONhttps://doi.org/10.7265/37tw-0059DocumentationGET DATAftp://sidads.colorado.edu/pub/DATASETS/fgdc/ggd650_froz_ground_area/FTPVIEW RELATED INFORMATIONhttp://nsidc.org/data/ease/index.htmlAll About EASE-GridCEOS IDN DIFVERSION 9.92006-01-012024-02-26NSIDCVersion SummaryNSIDCMinor VersionNSIDCCurrent Version1NSIDCLevel of ServiceBasicNSIDCFull Dataset Citation2006. <i>Northern Hemisphere Seasonal and Intermittent Frozen Ground Areas 1901-2001.</i> [indicate subset used]. Boulder, Colorado USA: National Snow and Ice Data Center. <a href="https://doi.org/10.7265/37tw-0059">https://doi.org/10.7265/37tw-0059</a>. [Date Accessed].NSIDCRetiredfalseNSIDCRelated Servicesapplication/vnd.nasa.cmr.umm+jsonfalsejroebuckmmt_service_12556S1962622169-NSIDCV0NSIDCV05service2023-04-25T21:20:48.786Zftp://sidads.colorado.edu/NSIDCV0_FTPNOT PROVIDED1FTP File SystemDownload data via FTP using an FTP client, command line utility or a script, e.g., Pythonhttps://nsidc.org/data/user-resources/help-center/how-access-data-using-ftp-client-command-line-wget-or-pythonVIEW RELATED INFORMATIONFTP Access GuidePublicationURLUSER SERVICESNSIDC User ServicesEmailnsidc@nsidc.orgDATA ACCESS/RETRIEVALDATA MANAGEMENT/DATA HANDLINGEARTH SCIENCE SERVICESThis is the most current release of this service. Last updated date is unknown.SERVICE PROVIDERNational Snow and Ice Data CenterNSIDCNational Snow and Ice Data Center home pagehttps://nsidc.org/National Snow and Ice Data Center home page.https://cdn.earthdata.nasa.gov/umm/service/v1.4UMM-S1.4ftp://sidads.colorado.edu/pub/DATASETS/fgdc/ggd650_froz_ground_area/