2024-03-28T11:35:10Zhttp://nsidc.org/api/dataset/metadata/oaioai:nsidc.org/GGD651.0012024-02-26T18:16:00Zv0_otherv0_allfgdc
GGD651.001Arctic EASE-Grid Freeze and Thaw Depths, 1901 - 2002Zhang, T., J. McCreight, and R.G. BarryArctic EASE-Grid Freeze and Thaw Depths, 1901 - 20022006-01-31Boulder, Colorado USANSIDC: National Snow and Ice Data Center1false10.7265/b3pg-bk18https://doi.org/10.7265/b3pg-bk18GGD651InvestigatorTingjunZZhangnsidc@nsidc.org1-303-492-61991-303-492-2359UCB449BoulderColorado80309-0449USAInvestigatorR.G.Barry449 UCBBoulderCO80309-0449USATechnical ContactNSIDCUser Servicesnsidc@nsidc.org1-303-492-61991-303-492-2468CIRES, 449 UCBUniversity of ColoradoBoulderCO80309-0449USAEARTH SCIENCECryosphereFrozen GroundActive Layer ACTIVE LAYEREARTH SCIENCELand SurfaceFrozen GroundActive Layer Freeze/Thaw DepthGeoscientific Informationedaphic factorFreeze depthFreezing Degree DaysFreezing IndexSeasonal Thaw LayerStefan solutionThaw DepthThaw Depth MeasurementsThaw DepthsThawing Degree-dayThawing Degree DaysThawing Index1901-01-012002-12-31complete5090-180180Geographic RegionArcticThe relationship between freeze/thaw depth and freezing and thawing indices has been demonstrated in several places. For example, Brown et al. (2000) review the relationship between thaw depth and the annual thawing index. Romanovsky and Osterkamp (1995), Zhang et al. (1997), Nelson et al. (1998), Klene et al. (2001), and Hinkel and Nelson (2003) all demonstrate the general validity of the approach. Nelson et al. (1997) used the approach to map to map active layer depth for the Kuparuk River Basin in Alaska. Zhang et al. (2005b) also use the approach to map active layer depth in the Ob, Yenisey, and Lena River Basins of Russia.
The quality of the input freezing and thawing indices is described in Frauenfeld, et al. (submitted) and in the documentation for the data set. The investigators conclude they are adequate for broad scale analysis. The difficulty lies in calculating the edaphic factors. There is some uncertainty in the estimation of the edaphic factors as discussed in Zhang et al. (2005b). Overall this approach is reasonable for broad scale calculations and for estimating the response of freeze and thaw depth to different climatological factors.EnglishFGDCFGDCFrozen 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 ColoradoBoulderCO80309-0449USAFTP479.4 MBASCIIBrown, J., K. M. Hinkel, and F. E. Nelson. 2000. The Circumpolar Active Layer Monitoring (CALM) program: Research designs and initial results. Polar Geogr., 24(3), 163-258.
Frauenfeld, O. W., T. Zhang, and J. L. McCreight. Submitted. Climatology and variability of the 20th century Northern Hemisphere freezing/thawing index. International Journal of Climatology.
Hinkel, K. M., and F. E. Nelson. 2003. Spatial and temporal patterns of active layer thickness at Circumpolar Active Layer Monitoring (CALM) sites in northern Alaska, 1995-2000. J. Geophys. Res., 108(D2), 8168. doi:10.1029/2001JD000927.
Klene, A. E., F. E. Nelson, N. I. Shiklomanov, and K. M. Hinkel. 2001. The N-factor in natural landscapes: Variability of air and soil-surface temperatures, Kuparuk River Basin, Alaska. Arct. Antarct. Alp. Res., 33(2), 140-148.
Knowles, K. 2004. EASE-Grid land cover data resampled from AVHRR Global 1 km land cover, Version 2, March 1992 - April 1993. Boulder CO, USA: National Snow and Ice Data Center. Digital Media.
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.
Nelson, F. E., N. I. Shiklomanov, G. R. Mueller, K. M. Hinkel, D. A. Walker, and J. G. Bockheim. 1997. Estimating active-layer thickness over a large region: Kuparuk River basin, Alaska, U.S.A. Arct. Alp. Res., 29(4), 367-378.
Nelson, F. E., and S. I. Outcalt. 1987. A computational method for prediction and regionalization of permafrost. Arct. Alp. Res., 19, 279-288.
Nelson, F. E., S. I. Outcalt, J. Brown, N. I. Shiklomanov, and K. M. Hinkel. 1998. Spatial and temporal attributes of the active-layer thickness record, Barrow, Alaska, U.S.A., in Lewkowicz, A. and M. Allard (editors). 1998. Proceedings of 7th International Conference on Permafrost pp. 797-802, Ste-Foy, Canada: Cent. d'Etudes Nordique, Univ. Laval.
Romanovsky, V. E., and T. E. Osterkamp. 1995. Interannual variations of the thermal regime of the active layer and near-surface permafrost in Northern Alaska. Permafrost Periglacial Proc., 6, 313-335.
Zhang, T., O. W. Frauenfeld, J. McCreight, and R. G. Barry. 2005a. Northern Hemisphere EASE-Grid annual freezing and thawing indices, 1901 - 2002. Boulder, CO: National Snow and Ice Data Center. Digital media.
Zhang, T., O. W. Frauenfeld, M. C. Serreze, A. Etringer, C. Oelke, J. McCreight, R. G. Barry, D. Gilichinsky, D. Yang, H. Ye, F. Ling, and S. Chudinova. 2005b. Spatial and temporal variability in active layer thickness over the Russian Arctic drainage basin. J Geophysical Research, Vol. 110, D16101. doi:10.1029/2004JD005642.
Zhang, T., T. E. Osterkamp, and K. Stamnes. 1997. Effects of climate on the active layer and permafrost on the north slope of Alaska, U.S.A. Permafrost Periglacial Proc., 8, 45-67.This data set contains mean, median, minimum and maximum freeze and thaw depths for each year from
1901 to 2002 on the 25 km resolution Equal-Area Scalable Earth Grid (EASE-Grid) for areas north of 50
deg. Freeze and thaw depths are estimated using a variant of the Stefan solution using an edaphic factor
and freezing or thawing indices as inputs. The edaphic factor is estimated based on different land surface
types; the freezing and thawing indices are from Northern Hemisphere EASE-Grid annual freezing
and thawing indices, 1901 - 2002 (Zhang, et al. 2005).
Two ASCII files are available for each year for freeze depth and thaw depth, respectively. Each file is
approximately 25.6 MB in size. In addition, there is one 10.5 MB ASCII file defining the latitude and longitude coordinates for each grid point. The data set is available via FTP as three compressed files.VIEW RELATED INFORMATIONhttps://doi.org/10.7265/b3pg-bk18DocumentationGET DATAftp://sidads.colorado.edu/pub/DATASETS/fgdc/ggd651_frzthw_depth_efact/FTPVIEW RELATED INFORMATIONhttp://nsidc.org/data/ease/All About EASE-GridVIEW RELATED INFORMATIONhttp://nsidc.org/data/ggd649.htmlNorthern Hemisphere EASE-Grid Annual Freezing and Thawing Indices, 1901 - 2002CEOS IDN DIFVERSION 9.92006-01-312024-02-26NSIDCVersion SummaryNSIDCMinor VersionNSIDCCurrent Version1NSIDCLevel of ServiceBasicNSIDCFull Dataset Citation2006. <i>Arctic EASE-Grid Freeze and Thaw Depths, 1901 - 2002.</i> [indicate subset used]. Boulder, Colorado USA: National Snow and Ice Data Center. <a href="https://doi.org/10.7265/b3pg-bk18">https://doi.org/10.7265/b3pg-bk18</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/ggd651_frzthw_depth_efact/