PRISM_DATASET_FILENAME: cai_vpdmax_us_us_30s_199401.bil, cai_vpdmax_us_us_30s_199402.bil, cai_vpdmax_us_us_30s_199403.bil, cai_vpdmax_us_us_30s_199404.bil, cai_vpdmax_us_us_30s_199405.bil, cai_vpdmax_us_us_30s_199406.bil, cai_vpdmax_us_us_30s_199407.bil, cai_vpdmax_us_us_30s_199408.bil, cai_vpdmax_us_us_30s_199409.bil, cai_vpdmax_us_us_30s_199410.bil, cai_vpdmax_us_us_30s_199411.bil, cai_vpdmax_us_us_30s_199412.bil
PRISM_DATASET_CREATE_DATE: 20160817
PRISM_DATASET_TYPE: an81/r1503
PRISM_DATASET_VERSION: M1
PRISM_CODE_VERSION: 16.1-20161010-1224
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.
