============================================================== Revised: 19 May 2020 The file hysplit.20180312.06z.hrrra was found to be corrupt. It was replaced with an identically named file but with 1-hourly 12-km NAM sigma-level model output (see ftp://ftp.arl.noaa.gov/archives/nams/README.TXT). ============================================================== ============================================================== HRRR 3 km Forecast Data Archive Revised: 10 January 2020 ________________________________________________________________________________ Overview - NOAA ARL began an archive of the first hour of hourly HRRR 3 km meteorological data from NOAA NCEP in June 2015. Each 1 hour forecast is concatenated to create a 6 hour data file beginning with 00z - 05z in the first file of the day. The first file of the day is called: hysplit.YYYYMMDD.00z.hrrra Subsequent files that day are named as follows: hysplit.YYYYMMDD.06z.hrrra - containing data from 06 - 11z hysplit.YYYYMMDD.12z.hrrra - containing data from 12 - 17z hysplit.YYYYMMDD.18z.hrrra - containing data from 18 - 23z NOTE: The Total Kinetic Energy (TKEN) field is zero from the initial date of the archive through the 12 UTC August 23, 2016 data set. The TKE field is available beginning at 18 UTC on August 23, 2016. NOTE: The pressure values are occasionally zero in the upper atmosphere (between about 100-200 mb) for the two-day period 20180831 and 20180901. This was discovered through use of the HYSPLIT utility program 'profile'. ________________________________________________________________________________ These files were created by processing NCEP's HRRR grib files obtained from https://nomads.ncep.noaa.gov/pub/data/nccf/com/hrrr/prod/ ________________________________________________________________________________ Additional Data Set Details 3 km lambert conformal grid 1799x1059 points Spatial domain: 12.14N 122.72W to 47.844N 60.9155W 36 Levels (hPa): 1.0 0.9990 0.9960 0.9905 0.9810 0.9670 0.9490 0.9275 0.9040 0.8785 0.8500 0.8185 0.7840 0.7465 0.7060 0.6625 0.6160 0.5670 0.5195 0.4767 0.4385 0.4041 0.3729 0.3449 0.3198 0.2767 0.2412 0.2118 0.1836 0.1553 0.1271 0.0989 0.0718 0.0527 0.0304 0.0124 Sfc Variables: 24 SHGT PRSS MSLP TPP1 DIFR T02M DP2M PBLH DSWF ULWF U10M V10M VSBY CSNO CICE CFZR CRAI LIB4 CAPE CINH TCLD REFC CLDB CLDT Upper Levels: 8 PRES TEMP UWND VWND WWND DIFW SPHU TKEN MODEL TYPE: HRRR VERT COORD: 1 POLE LAT: 38.5000 POLE LON: 262.5000 REF LAT: 38.5000 REF LON: 262.5000 REF GRID: 3.0 ORIENTATION: 0. CONE ANGLE: 38.5000 SYNC X: 1. SYNC Y: 1. SYNC LAT: 21.1400 SYNC LON: 237.2800 NUMB X: 1799 NUMB Y: 1059 NUMB LEVELS: 36