Use the forms below to enter parameters for the ranking program (Data up through April 2018)

Layer to map: 1 = SLP, 2 = Height at pressure level (select level), 3 = 2-meter Temp, 4 = Temp at pressure level (select level), 5 = U-wind component (select level), 6 = V-wind component (select level), 7 = Skin Temp, 8 = Precipitable Water, 9 = Relative Humidity (select level up to 300 mb), 10 = ERSST v.4 SSTs (Slow, through Nov 2016: 2.5 minutes), 11 = Wind Speed (select level), 12 = U-wind Shear (select levels), 13 = Height Thickness (select levels), 14 = Temperature Between Pressure Levels, 15 = Potential Velocity (0.2101 sigma), 16 = NASA Global Temps (VERY SLOW! 2.5-10 mins: Through Dec 2017), 17 = Specific Humidity, 18 = Combined SST/T2M [Temporarily Disabled], 19 = Heat Content, 20 = Cloud Cover, 21 = Preipitation Rate

Choose Theme (1-17):
Pressure Level: 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

Note 1: use lower pressure level 0 for surface themes - layers 1, 3, 7, 8, and 10.
Note 2: use only lower pressure level for themes 2, 4, 5, 6, 9, and 11.
Note 3: use lower and upper pressure levels for themes 12, 13, and 14.

Lower pressure level:       Upper pressure level:
Bounding Coords for Rank Computation
North Lat Left Lon
South Lat Right Lon

This computes a single, rank value for the selected
time period. It does not affect the map. Remember that
longitude runs from 0 to 360 (no E-W). These values do not
affect the area to be mapped (see bottom of page). Click HERE for
a blank map with labelled grid lines.
Last month to start evaluation (e.g., 2 for Feb): Number of months (up to 12) to evaluate (e.g., 3 for Dec-Feb): Year of last month to start evaluation: Map Type: 1=Cyclindrical, 2=North Pole (NH Only), 3=Lambert Equal Area (Best for High Lats),
Manually Enter Map Bounds: 0=No, 1=Yes       North Lat South Lat Left Lon Right Lon
Note 1: Coords only used if map type is Cylindrical (1) or Lambert Equal Area (3).
Note 2: If Using Lambert Equal Area, make sure longitude spread is <= 50° in mid-latitudes.
Map of Ranks, Max Year, or Min Year:

1 = Ranks, 2 = Max Year, 3 = Min Year    Min/Max % >=
Raw data obtained from ESRL. Analysis may not be accurate. Use at your own risk!

   (to reset form, select theme 0 and press button)


Once it starts, DO NOT HIT REFRESH.
The program takes 1-2 minutes to run. If two levels are used, count on 2 minutes.
For NASA GISS temps, 2.5 minutes (1 month) to 10 minutes (12 months).
Wait for completion message and URL below, then scroll down to view map. ....