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Binary Scaling of 2.5-km CONUS Gridded LAMP GRIB2 Files
|
Element |
Original Precision |
Decimal Scale Factor |
Binary Scale Factor |
Precision After Scaling |
0.1 K |
1 |
2 |
0.4 K |
|
0.1 K |
1 |
2 |
0.4 K |
|
0.1 K |
1 |
2 |
0.4 K |
|
0.1 K |
1 |
2 |
0.4 K |
|
1 M |
0 |
3 |
8 M |
|
1 M |
0 |
7 |
128 M |
|
0.1 m/s |
1 |
2 |
0.4 m/s |
|
*Wind Direction Analysis |
1 degree |
-1 |
0 |
10 degrees |
0.1 K |
1 |
2 |
0.4 K |
|
0.1 K |
1 |
2 |
0.4 K |
|
1 M |
0 |
3 |
8 M |
|
1 M |
0 |
7 |
128 M |
|
0.1 m/s |
1 |
2 |
0.4 m/s |
|
*Wind Direction Forecast |
1 degree |
-1 |
0 |
10 degrees |
*Wind Direction data are shown in the Wind Speed images as wind barbs.
Using the scaling factors listed above, we were able to decrease file sizes between 21% - 26% of their original size for the temperature analysis and forecasts, temperature error analysis, dewpoint temperature analysis and forecasts, dewpoint temperature error analysis, and ceiling height analysis and forecasts. The file sizes for the visibility analysis and forecasts were reduced by approximately 61% and 50%, respectively.
US Dept of Commerce National Oceanic and Atmospheric Administration National Weather Service 1325 East-West Highway Silver Spring, MD 20910 Meterological Development Laboratory Web site owner: LAMP Webmaster |
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