PRISM_DATASET_FILENAME: cai_vpdmin_us_us_30s_201801.bil, cai_vpdmin_us_us_30s_201802.bil, cai_vpdmin_us_us_30s_201803.bil, cai_vpdmin_us_us_30s_201804.bil, cai_vpdmin_us_us_30s_201805.bil, cai_vpdmin_us_us_30s_201806.bil, cai_vpdmin_us_us_30s_201807.bil, cai_vpdmin_us_us_30s_201808.bil, cai_vpdmin_us_us_30s_201809.bil, cai_vpdmin_us_us_30s_201810.bil, cai_vpdmin_us_us_30s_201811.bil, cai_vpdmin_us_us_30s_201812.bil
PRISM_DATASET_CREATE_DATE: 20180716, 20180815, 20180918, 20181016, 20181125, 20181217, 20190118, 20190217, 20190217, 20190420, 20190420, 20190620
PRISM_DATASET_TYPE: an81/r1503, an81/r1503, an81/r1503, an81/r1503, an81/r1503, an81/r1503, an81/r1812, an81/r1812, an81/r1812, an81/r1812, an81/r1812, an81/r1812
PRISM_DATASET_VERSION: M1
PRISM_CODE_VERSION: 16.1-20171216-1839, 16.1-20171216-1839, 16.1-20171216-1839, 16.1-20171216-1839, 16.1-20171216-1839, 16.1-20171216-1839, 16.1-20180525-1024, 16.1-20180525-1024, 16.1-20180525-1024, 16.1-20180525-1024, 16.1-20180525-1024, 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.
