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Attribute Table Field Descriptions<\/SPAN><\/P>

INV_ID<\/SPAN><\/SPAN><\/P>

Unique identifier for each glacier and perennial snowfields. The value was created combining the easting and northing using the format ExxNyy where xx is the easting and yy is the northing.<\/SPAN><\/SPAN><\/P>

X_COORD<\/SPAN><\/SPAN><\/P>

Longitude in decimal degrees of the centroid of the feature. <\/SPAN><\/SPAN><\/P>

Y_COORD<\/SPAN><\/SPAN><\/P>

Latitude in decimal degrees of the centroid of the feature. <\/SPAN><\/SPAN><\/P>

EASTING<\/SPAN><\/SPAN><\/P>

UTM longitude in meters of the centroid of the feature. See UTM_Zone field for the UTM zone. <\/SPAN><\/SPAN><\/P>

NORTHING<\/SPAN><\/SPAN><\/P>

UTM latitude in meters of the centroid of the feature. See UTM_Zone field for the UTM zone. <\/SPAN><\/SPAN><\/P>

UTM_Zone<\/SPAN><\/SPAN><\/P>

UTM zone of the centroid of the feature. <\/SPAN><\/SPAN><\/P>

RECNO<\/SPAN><\/SPAN><\/P>

24K identification number. <\/SPAN><\/SPAN><\/P>

GNIS_ID<\/SPAN><\/SPAN><\/P>

The ID from the Geographic Names Information System (GNIS). <\/SPAN><\/SPAN><\/P>

GLACNAME<\/SPAN><\/SPAN><\/P>

Official USGS name. If a glacier split into smaller pieces since the 24K mapping, all pieces in this inventory were assigned the glacier name, regardless if it was classified as a glacier or perennial snowfield. <\/SPAN><\/SPAN><\/P>

CLASS<\/SPAN><\/P>

Type of feature (glacier, perennial snowfield, or buried ice) based on visual observation.<\/SPAN><\/SPAN><\/P>

ADM_REGION<\/SPAN><\/P>

Two-digit code identifying the USFS administrative region. Features were assigned to the region that the majority of the feature is located in. All features were assigned to a USFS region regardless if the feature is on USFS land. <\/SPAN><\/SPAN><\/P>

ADM_NAME<\/SPAN><\/P>

Name of USFS administrative region. Features were assigned to the region that the majority of the feature is located in. All features were assigned to a USFS region regardless if the feature is on USFS land. <\/SPAN><\/SPAN><\/P>

UNIT_NAME<\/SPAN><\/SPAN><\/P>

The name of the local administrative land the feature is located. <\/SPAN><\/SPAN><\/P>

GEO_REGION<\/SPAN><\/SPAN><\/P>

The mountain ranges the feature is found on. Corresponds to region in the 24K. <\/SPAN><\/SPAN><\/P>

STATENAME<\/SPAN><\/SPAN><\/P>

Full state name. <\/SPAN><\/SPAN><\/P>

YEAR<\/SPAN><\/SPAN><\/P>

Year of the main image used for the outline. <\/SPAN><\/SPAN><\/P>

SOURCE_MAT<\/SPAN><\/SPAN><\/P>

Image used for delineating the outline. <\/SPAN><\/P>

AREA_KM2<\/SPAN><\/SPAN><\/P>

Area of the feature in km2 (calculated using USA_Contiguous_Albers_Equal_Area_Conic_USGS_version projection) <\/SPAN><\/SPAN><\/P>

U_PERC<\/SPAN><\/SPAN><\/P>

Area uncertainty as a percentage. <\/SPAN><\/SPAN><\/P>

COMMENT<\/SPAN><\/SPAN><\/P>

Various notes on the feature outlines, including the decisions the digitizer made. See Comment field section below for more details. <\/SPAN><\/P>

LandOwner <\/SPAN><\/P>

The federal agency or group that oversees the land the feature is located on. Features were assigned to the agency or group that manges the majority of the land the feature is located on. USFS refers to the United States Forest Service, and NPS refers to the National Park Service. \"Other\" indicates the land is not managed by the USFS, NPS, or Indian Reservation. <\/SPAN><\/P>

Comment Notes<\/SPAN><\/P>

Notes on common comments <\/SPAN><\/SPAN><\/P>

  • Comments with the format \u201cUsed xx to help\u201d indicates additional <\/SPAN><\/SPAN>imagery was used to help outline the feature because the main image had shadows, seasonal snow, or image warping <\/SPAN><\/SPAN><\/P><\/LI>

  • Comments with the format \u201cUsed xx to help with seasonal snow\u201d indicate additional imagery was used to help eliminate seasonal snow covering the feature. This does not mean that the main image overall was snowy, but that the individual glacier or perennial snowfield had a significant amount of seasonal snow. <\/SPAN><\/SPAN><\/P><\/LI><\/UL>

    DEMs referenced in comments <\/SPAN><\/SPAN><\/P>

    • 2011_OLC_Deschutes<\/SPAN><\/SPAN><\/P>

      • Agency: Department of Geology and Mineral Industries (DOGAMI)<\/SPAN><\/SPAN><\/P><\/LI>

      • https://gis.dogami.oregon.gov/maps/lidarviewer/<\/SPAN><\/SPAN><\/P><\/LI><\/UL><\/LI>

      • adams_edifice<\/SPAN><\/SPAN><\/P>

        • Agency: USGS<\/SPAN><\/P><\/LI>

        • https://www.sciencebase.gov/catalog/item/5bc623b9e4b0fc368ebbe99a<\/SPAN><\/P><\/LI>

        • Bard, J.A, 2019, High-resolution digital elevation model for Mount Adams and vicinity, Washington, based on lidar surveys of August-September, 2016: U.S. Geological Survey data release, https://doi.org/10.5066/P9Z1HF1K.<\/SPAN><\/P><\/LI><\/UL><\/LI>

        • GlacierPeak_WA_DEM<\/SPAN><\/SPAN><\/P>

          • Agency: USGS<\/SPAN><\/P><\/LI>

          • https://www.sciencebase.gov/catalog/item/57bf299ee4b0f2f0ceb7534e<\/SPAN><\/P><\/LI>

          • Bard, J.A., 2017, High-resolution digital elevation dataset for Glacier Peak and vicinity, Washington, based on lidar surveys of August-November, 2014 and June, 2015: U.S. Geological Survey data release, https://doi.org/10.5066/F7H41PJG.<\/SPAN><\/P><\/LI><\/UL><\/LI>

          • MountBakerDEM <\/SPAN><\/SPAN><\/P>

            • Agency: USGS<\/SPAN><\/SPAN><\/P><\/LI>

            • https://www.sciencebase.gov/catalog/item/58518b0ee4b0f99207c4f12c<\/SPAN><\/P><\/LI>

            • Bard, J.A., 2017, High-resolution digital elevation dataset for Mount Baker and vicinity, Washington, based on lidar surveys of 2015: U.S. Geological Survey data release, https://doi.org/10.5066/F7WD3XR0.<\/SPAN><\/P><\/LI><\/UL><\/LI><\/UL>

              References <\/SPAN><\/P>

              Dick KA (2013) Glacier Change in the North Cascades, Washington: 1900-2009. Portland State University.<\/SPAN><\/SPAN><\/P>

              Fountain AG, Gray C, Glenn B, Menounos B, Pflug J and Riedel J (2021) Glaciers of the Olympic Mountains, Washington - the past and future 100 years. Earth and Space Science Open Archive, 53. doi:10.1002/essoar.10506746.1.<\/SPAN><\/P>

              Jin S and others (2019) Overall Methodology Design for the United States National Land Cover Database 2016 Products. Remote Sensing 11(24). doi:10.3390/rs11242971.<\/SPAN><\/P>

              Selkowitz DJ and Forster RR (2016) Automated mapping of persistent ice and snow cover across the western U.S. with Landsat. ISPRS Journal of Photogrammetry and Remote Sensing 117, 126\u2013140. doi:10.1016/j.isprsjprs.2016.04.001.<\/SPAN><\/P>

              • <\/P><\/LI><\/UL>

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