PRISM_DATASET_FILENAME: cai_vpdmin_us_us_30s_201901.bil, cai_vpdmin_us_us_30s_201902.bil, cai_vpdmin_us_us_30s_201903.bil, cai_vpdmin_us_us_30s_201904.bil, cai_vpdmin_us_us_30s_201905.bil, cai_vpdmin_us_us_30s_201906.bil, cai_vpdmin_us_us_30s_201907.bil, cai_vpdmin_us_us_30s_201908.bil, cai_vpdmin_us_us_30s_201909.bil, cai_vpdmin_us_us_30s_201910.bil, cai_vpdmin_us_us_30s_201911.bil, cai_vpdmin_us_us_30s_201912.bil
PRISM_DATASET_CREATE_DATE: 20190928, 20190928, 20190928, 20191007, 20191119, 20191221, 20200116, 20200217, 20200217, 20200217, 20200217, 20200217
PRISM_DATASET_TYPE: an81/r1812
PRISM_DATASET_VERSION: M3
PRISM_CODE_VERSION: 16.1-20180525-1024
PRISM_DATASET_REMARKS: This grid was developed in three steps:  (1) vapor pressure deficit was initially modeled with PRISM at 30-arc-second (~800-m) resolution for each month of the year to produce the source grids listed under PRISM_FILENAME, on the date(s) listed under PRISM_CREATE_DATE; (2) these twelve 800-m grids were upscaled to 2.5-arc-minute (~4-km) resolution with a Gaussian filter; and (3) the resulting twelve 4-km grids were averaged to obtain a 4-km annual grid.
