Use version 1 of snow data (#3462)

api/app/jobs/viirs_snow.py

@@ -23,9 +23,11 @@
 
 BC_BOUNDING_BOX = "-139.06,48.3,-114.03,60"
 NSIDC_URL = "https://n5eil02u.ecs.nsidc.org/egi/request"
-PRODUCT_VERSION = 2
+PRODUCT_VERSION = 1
 SHORT_NAME = "VNP10A1F"
-LAYER_VARIABLE = "/VIIRS_Grid_IMG_2D/CGF_NDSI_Snow_Cover"
+# Leaving this here for when we switch to version 2 eventually
+# LAYER_VARIABLE = "/VIIRS_Grid_IMG_2D/CGF_NDSI_Snow_Cover"
+LAYER_VARIABLE = "/NPP_Grid_IMG_2D/CGF_NDSI_Snow_Cover"
 RAW_SNOW_COVERAGE_NAME = 'raw_snow_coverage.tif'
 RAW_SNOW_COVERAGE_CLIPPED_NAME = 'raw_snow_coverage_clipped.tif'
 BINARY_SNOW_COVERAGE_CLASSIFICATION_NAME = 'binary_snow_coverage.tif'
@@ -233,7 +235,7 @@ async def _run_viirs_snow(self):
         today = date.today()
         if last_processed_date is None:
             # Case to cover the initial run of VIIRS snow processing (ie. start processing one week ago)
-            next_date = today - timedelta(days=10)
+            next_date = today - timedelta(days=21)
         else:
             # Start processing the day after the last record of a successful job.
             next_date = last_processed_date + timedelta(days=1)