|Look for Analog Matches in This Box
North Lat West Lon
Remember that longitude runs from 0 to 360 (no E-W).
Click HERE for a blank map with labelled grid lines.
|Forecast is for This Box
Last month to start evaluation (e.g., 4 for April):
Number of Months (up to 12) to evaluate for analog matches (e.g., 2 for Mar-Apr):
Year of last month to start evaluation:
Months Ahead (up to 12) to generate forecast (e.g., 2 for Jun forecast from Mar-Apr analogs):
For example, to evaluate Mar-Apr, 2010, data to forecast Jun 2010, choose 4, 2, 2010, 2 (from top to bottom).
|Theme to Forecast:
1 = SLP, 2 = Pressure level height (enter below), 3 = 2-Meter Temps, and 4 = Pressure level temperature (enter below)
Choose Variable (1-4):
0 = 1000mb, 1 = 925mb, 2 = 850mb, 3 = 700mb, 4 = 600mb, 5 = 500mb,
6 = 400mb, 7 = 300mb, 8 = 250mb, 9 = 200mb, 10 = 150mb, 11 = 100mb, 12 = 70mb,
13 = 50mb, 14 = 30mb, 15 = 20mb, 16 = 10mb
Enter Pressure Level for Height Analysis: (see above)
Enter Pressure Level for Temp Analysis: (see above)
|Weighting for Analog Selections (-100 to 100):
Auto Weight (0 = No, 1 = Yes):
Detrend Data (0 = No, 1 = Yes):
Note 1: If the analysis OR forecast box is entirely over land, program might crash due to no SST data.
Note 2: Weights must be whole numbers. Total need not add to 100.
Note 3: Auto weighting uses a multiple linear regression to find the best historical correlations. Manual weights are ignored.