ds337.0 NCEP ADP Global Upper Air and Surface Weather Observations Subset Request Form

This form allows a user to request a temporal and spatial subset from the NCEP ADP Global Upper Air and Surface Weather Observations. Also included is the option to select data for one or more observing stations. Once the form is completed and submitted, the user is notified through email when the data is ready for download. All information boxes must be filled, except where noted as optional, and are seeded with default or min./max. limits. The output data is converted from PREPBUFR format to either ASCII or NetCDF. The NetCDF data format conversion is done using the Model Evaluation Tools (MET) software and can be easily interfaced with the model validation utilities included in the MET software.

Select Temporal Range
Start Date	End Date
00:00 06:00 12:00 18:00	00:00 06:00 12:00 18:00

Select Output Data Format
NetCDF ASCII

Select Parameters
Specific humidity (observed)		Dewpoint Temperature (derived)
Temperature (observed)		Wind speed (derived)
Geopotential height (observed)		Relative humidity (derived)
East-West wind component (observed)		Humidity mixing ratio (derived)
North-South wind component (observed)		Pressure reduced to mean sea level (derived)
or

Select Observation Types
Select which PREPBUFR message type strings to retain in your data request. All will be retained if none are selected. For a description of PREPBUFR Mnemonics, see: www.emc.ncep.noaa.gov/mmb/data_processing/prepbufr.doc/table_1.htm.
ADPUPA		SFCSHP
AIRCAR		SPSSMI
AIRCFT		QKSWND
SATWND		RASSDA
PROFLR		WDSATR
VADWND		ASCATW
ADPSFC
or

Select Quality Mark Threshold
Select a quality mark threshold to indicate which observations to retain. Observations with a quality mark equal to or less than this threshold will be retained, while observations with a quality mark greater than this threshold will be discarded. Click here for a description of observation quality marks.
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Select Spatial Subset Preference
Select region via Google map Retain observations within a pre-defined NCEP verification region Retain observations within a pre-defined NCEP storage grid Select location by station ID

Zoom: 

Pan Map  Draw Box

Interactive Map Instructions: Use the 'Pan Map' option to drag and center the map on your area of interest Use the 'Draw Box' option to drag a box around your area of interest. You can also manually enter bounding latitudes and longitudes in the text boxes.
	North*:
West*:		East*:
	South*:
*Latitudes and longitudes must be specified in whole degrees

Top Latitude
Left Longitude	Right Longitude
Bottom Latitude

Select a pre-defined NCEP verification region. All observations falling inside the region will be retained in the data request. Click here for more information on the NCEP verification regions.

Continental United States Eastern United States Western United States Appalachians Arctic Region Central America Caribbean Sea Eastern Canada Gulf of Mexico Gulf of Mexico Coast Great Basin Hawaii Lower Mississippi Valley Midwest Mexico Northern Alaska Northern Atlantic Ocean Northern East Coast Northern Mountain Region Northern Plains Northern Pacific Ocean Northern South America Northern West Coast Puerto Rico and Islands Southern Alaska Southern Atlantic Ocean Southern East Coast Southern Mountain Region Southern Plains Southern Pacific Ocean Southern West Coast Southwest Desert Western Canada

Select a pre-defined NCEP storage grid. All observations occuring inside the grid boundaries will be retained in the data request. Click here for a listing and description of the NCEP storage grids.

Map Projection ----Lambert Conformal---- G145 G146 G163 G206 G209 G211 G212 G215 G218 G221 G222 G226 G227 G236 G237 G241 G245 G246 G247 G252 ----Polar Stereographic---- G005 G006 G027 G028 G055 G056 G087 G088 G100 G101 G103 G104 G105 G106 G107 G201 G202 G203 G205 G207 G213 G214 G216 G217 G223 G224 G240 G242 G249 ----Lat/Lon Projection---- G002 G003 G004 G029 G030 G033 G034 G045 G085 G086 G110 G175 G228 G229 G230 G231 G232 G233 G234 G243 G248 G250 G251

Please enter one or more station identifiers to retain from the dataset, given as the 4-letter International Civil Aviation Organization (ICAO) location indicator or 5-digit WMO index number (e.g. Enter "KDEN" and/or "72565" to select Denver International Airport). It is recommended that you enter both the ICAO and WMO index identifiers to ensure that all observations are retained in the data request. A blank entry will retain all stations in the database. A maximum of 20 stations may be entered. Click here for more information and to search for station information. Click here to obtain a complete listing of the WMO index identifiers.

Station 1

Select File Compression Format
Some type of file compression is recommended so as to minimize the network transfer time required to move your data files to your host computer.
.gz, GNU Zip
.Z, Unix compress
no compression

Comments And/Or Questions (Optional)

Submit A Subset Data Request   Reset Form