Normals Lister

Description:

This product provides the monthly climate normals for a station as calculated by the National Climatic Data Center. Details on how these normals were computed can be obtained at: http://www.ncdc.noaa.gov/oa/climate/normals/usnormals.html .

Station selection proceeds as in other CLIMOD products. Note that normals are not available for all stations; only those with fairly complete data for the normal period.

Checkboxes are used to select the variables of interest. The initial selection matrix includes 1971-2000 normals (thirty-year averages) and standard deviations for maximum temperature, minimum temperature, average temperature, HDD, CDD, and total precipitation. For precipitation, there is also an option for "precipitation percentiles". This option produces a table of the monthly/annual precipitation amounts associated with the following percentiles: .005, .01, .05, .10, .20, .30, .40, .50, .60, .70, .80, .90, .95, .99, .995. The .01 percentile, for instance, is the amount of precipitation that on the average would fail to be exceeded during a given month once in 100 years.

The "More options" button will produce a more extensive variable selection matrix. The normal period can be set to either 1961-1990 or 1971-2000. In addition to the values in the initial matrix, selections are also available for medians, 21-year and 11-year values, factors for adjusting temperatures to approximate a midnight observation time, and the 30 years of values that went into the normals computation. Additional elements are HDD and CDD for bases other than 65. For HDD, these bases are 70, 65, 60, 57, 55, 50, 45, 43, 40, 35, 32 and 30. For CDD, the bases are 80, 75, 70, 65, 60, 57, 55, 50, 45, 43, 40 and 32. [Currently HDD and CDD to different bases are only available for the 1961-1990 period.]


Price

The price for this product is $0.25/summary.

Sample

Normals Lister

Station: CANAAN VALLEY State: WV ID: 461393
Latitude: 39.05 degrees Longitude: -79.42 degrees Elevation: 3249 feet
Station period of record: 08/01/1948 - 04/30/1996

CLIMOD Product: Normals Lister Creation Time: 08/01/2002 11:07 EDT
Normals Period: 1971-2000

Analysis Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
30 Yr Mean-Max Temp 34.1 37.5 46.5 56.2 66.0 73.1 76.8 75.4 69.5 60.0 48.3 38.8 56.9
30 Yr Mean-Min Temp 14.9 16.8 24.3 32.2 42.3 49.4 53.9 51.5 45.4 35.1 26.8 19.7 34.4
30 Yr Mean-Ave Temp 24.5 27.2 35.4 44.2 54.2 61.3 65.4 63.5 57.5 47.6 37.6 29.3 45.6
30 Yr Mean-HDD (base 65) 1255 1060 918 625 342 132 52 92 230 541 825 1109 7181
30 Yr Mean-CDD (base 65) 0 0 0 0 5 19 63 44 3 0 0 0 134
30 Yr Mean-Precip 4.21 3.75 4.62 4.02 5.21 5.00 4.84 4.54 3.88 3.47 3.98 3.87 51.39

For additional assistance, you can contact the HPRCC.