==============================================================
Revised: 10 January 2020  

Notice - Pre-March 21, 2017, the PBLH values tend to be too 
high. (HYSPLIT can estimate PBLH using a method 
specified by the KMIXD variable as described at
https://ready.arl.noaa.gov/hysplitusersguide/S410.htm).

==============================================================
Revised: 22 March 2017

Effective March 21, 2017, coinciding with an NCEP NAM upgrade,
 the order of the fields were changed in the nam12 archive.  
A "bridge" file such as ../archives/gdas1/gdas1.mar17.w3 can be 
in the CONTROL file to allow HYSPLIT to continue between the files.

Effective October 1, 2014, coinciding with a HYSPLIT upgrade
at NCEP, PBLH was added. 

==============================================================
Revised: 26 July 2013

Coinciding with NCEP's change from one supercomputer to another,
these additional surface fields were added beginning with the file
valid July 25, 2013:
TMPS
SOLT
SOLW
WESD
CSNO
CICE
CFZR
CRAI
VSBY
TCLD
CAPE
CINH
LISD
LIB4
==============================================================

			NAM 12 km Forecast Data Archive 
			  Revised: 10 January 2004 

________________________________________________________________________________

Overview -


NOAA ARL began an archive of the first 3 hours of NAM 12km
meteorological data from NOAA NCEP in May 2007.  An extraction procedure was implemented to
concatenate the initial field (+0 h forecast) and the +3 h forecast for each 
cycle, four times daily, into daily files that can be accessed as a
pseudo analysis archive. 

________________________________________________________________________________

Additional Data Set Details

	12.191 km lambert conformal grid ((different grid than CONUS files in /pub/archives/nams)
	614x428 points 
	Spatial domain: 12.19N 133.46W to 57.329N 49.4167W
	31-day rotating archive with output every 3 hours 
	26 Levels (hPa): 1000,975,950,925,900,875,850,825,800,775,750,725,700,
                      650,600,550,500,450,400,350,300,250,200,150,100,50 
	Sfc Variables:         14 SHGT MSLP TPPT CPPT T02M RH2M U10M 
                                  V10M PRSS LHTF SHTF USTR RGHS DSWF 
	Upper Levels:           7 HGTS TEMP UWND VWND WWND RELH TKEN

	MODEL TYPE:         NAM
	VERT COORD:         2
	POLE LAT:           90.000
	POLE LON:           0.0000
	REF LAT:            25.000
	REF LON:            -95.00
	REF GRID:           12.190
	ORIENTATION:        0.
	CONE ANGLE:         25.0
	SYNC X:             1.
	SYNC Y:             1.
	SYNC LAT:           12.190
	SYNC LON:           -133.46
	NUMB X:             614
	NUMB Y:             428
	NUMB LEVELS:        26