Mean Precipitation for Alaska 1971-2000
Wayne Gibson. 2009. Mean Precipitation for Alaska 1971-2000. National Park Service, Alaska Regional Office GIS Team
This data set contains spatially gridded estimates ofaverage monthly and annual precipitation for theclimatological period 1971-2000. Distribution of the pointmeasurements to a spatial grid was accomplished using thePRISM model, developed by Christopher Daly of the PRISM Climate Group.Unlike other PRISM datasets, the values used in these PRISM grids for Alaska are (mm * 100) for precipitation and (Celsius * 100) for temperature. Also note that the original grids from Univ. of Oregon were delivered in NAD27 Decimal Degrees and were reprojected by NPS to conform to the standard projection used for Alaska wide datasets; namely, Alaska Albers NAD83. Because the cell size for decimal degree data varies from north to south across an area as large as Alaska when converted to meters (as well as the x/y ratio), a cell size of 771 meters was used (determined at mid point of data extent) for the reprojection. The resampling method used was nearest neighbor for this dataset to attempt to maintain same values for the same location.
- Type
- Geospatial Dataset
- Authors
- Wayne Gibson
- Date of Issue
- 2009-09-16
- Publisher
- National Park Service, Alaska Regional Office GIS Team
- Units
- AKRO , ANIA , BELA , CAKR , DENA , GAAR , GLBA , KATM , KEFJ , KLGO , KOVA , LACL , NOAT , SITK , WRST , YUCH
- Keywords
- AKRO, Alaska, Alaska Region NPS Regional Office, Climatologymeteorologyatmosphere, PRISM, Weather / Climate