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Plotting & Analysis
Subdaily 20CR Composites
Subdaily 20thC Reanalysis Data Composites
Plot maps or composites of variables from the 20th Century Reanalysis dataset. Data is available from
Jan 1836 to 2015
for (20CRV3) and from
Jan 1851 to 2014
for (20CRV2c).
Variables
Geopotential Height
Air Temperature
Zonal Wind
Meridional Wind
Vector Wind
Omega
Specific Humidity (to 100mb only)
Relative Humidity (to 100mb only)
.995 sigma Air Temperature
.995 sigma Zonal Wind
.995 sigma Meridional Wind
.995 sigma Omega
.995 sigma Relative Humidity
Pressure at Mean Sea Level
Surface Pressure
2m Air Temperature
10m Zonal Wind
10m Meridional Wind
Precipitation Rate
Precipitable Water
Analysis level?
1000mb
950mb
900mb
850mb
800mb
750mb
700mb
650mb
600mb
550mb
500mb
450mb
400mb
350mb
300mb
250mb
200mb
150mb
100mb
70mb
50mb
30mb
20mb
10mb
Surface
Tropopause
Version?
20CRV3
20CRV2c
Enter Year, Month and Day and Hour(0,6,12,18z) for composites
For example,
1999 1 1 18
(Don't type in the
z
). To subtract one set of days from another, use a minus sign (-) before the years of the days that are to be subtracted. Default is last available date for variable.
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
OR
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
0z
6z
12z
18z
to
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
0z
6z
12z
18z
Enter Year of last day of range
OR File with Dates
Optional Plot Label replaces list of dates with title of your choice.
Filename:
Hours to add or subtract:
(optional)
-72
-66
-60
-54
-48
-42
-36
-30
-24
-18
-12
-6
0
6
12
18
24
30
36
42
48
54
60
66
72
This number of days will be added (or subtracted) from all input dates. Please use all positive dates for input.
Alternative Plot Label:
(optional)
Color?
Color
Black and White
Shading Type
Shaded
Shaded w/overlying Contours
Contours (Black and White Only)
Plot type?
Mean
Anomaly
Output Type?
Ensemble Mean
Ensemble Spread
Scale Plot Size(%)
Plot contour labels?
No
Yes
Vector Winds: Plot every nth arrow in x and y (default 2)
Override default contour interval ? Interval:
Range: low
high
Scale vectors
200%
150%
100%
75%
50%
Region of globe
Northern Hemisphere
USA
ALL
Europe
Asia
Australia
Africa
Antarctica
Tropics
Indian Pacific
Tropical Pacific
4-Corner Region Western US
Afghanistan
Custom
Crossection(latitude by height)
Crossection(longitude by height)
If
CUSTOM:
Enter lowest lat (-90 to 90)
Highest lat
Enter western most longitude (0 to 360)
Eastern most longitude
Choose projection for CUSTOM:
Cylindrical Equidistant
Northern Hemisphere Polar Stereographic
Southern Hemisphere Polar Stereographic
Choose height range for CROSSECTION:
1000mb
950mb
900mb
850mb
800mb
750mb
700mb
650mb
600mb
550mb
500mb
450mb
400mb
350mb
300mb
250mb
200mb
150mb
100mb
70mb
50mb
30mb
20mb
10mb
to
10mb
20mb
30mb
50mb
70mb
100mb
150mb
200mb
250mb
300mb
350mb
400mb
450mb
500mb
550mb
600mb
650mb
700mb
750mb
800mb
850mb
900mb
950mb
1000mb
State boundaries
No
Yes
This is a Research and Development Application
20th Century Reanalysis Project at PSL
Complete V2c Dataset Documentation
Complete V3 Dataset Documentation
Help
Instructions
Index time-series Info
Use your own time-series
Background Information
Referencing Plots
Related Plot/Analysis
Plot monthly/seasonal 20thC Reanalysis (standard)
Plot daily 20thC Reanalysis
Plot daily NCEP R1 composites
Plot 6-hourly NCEP R1 composites
Plot monthly R1 correlations
PSL's Complete NCEP Reanalysis Page
Contact
If you need assistance, or would like to provide feedback, please email:
psl.data@noaa.gov
.