PRISM_DATASET_FILENAME: cai_vpdmax_us_us_30s_198901.bil, cai_vpdmax_us_us_30s_198902.bil, cai_vpdmax_us_us_30s_198903.bil, cai_vpdmax_us_us_30s_198904.bil, cai_vpdmax_us_us_30s_198905.bil, cai_vpdmax_us_us_30s_198906.bil, cai_vpdmax_us_us_30s_198907.bil, cai_vpdmax_us_us_30s_198908.bil, cai_vpdmax_us_us_30s_198909.bil, cai_vpdmax_us_us_30s_198910.bil, cai_vpdmax_us_us_30s_198911.bil, cai_vpdmax_us_us_30s_198912.bil
PRISM_DATASET_CREATE_DATE: 20190817, 20190817, 20190817, 20190817, 20190817, 20191007, 20191007, 20190817, 20190817, 20190817, 20191002, 20190817
PRISM_DATASET_TYPE: an81/r1812
PRISM_DATASET_VERSION: M1
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.
