Nicholas Crookston and Gerald Rehfeldt
Unpublished material
Map of Growing season precipitation, April to September across All North America
tabular digital data
http://forest.moscowfsl.wsu.edu/climate/current/
Climate surfaces were developed by fitting Hutchinson's thin-plate
splines to thirty years of local temperature and precipitation data
gathered across All North America. From these surfaces, a map was generated
which estimates the normal Growing season precipitation, April to September for the contemporary, or current, climate.
To provide an estimate of the variable everywhere in the geographic extent
1961
1990
ground condition
Infrequently, only when errors are detected.
All North America
-177
-52
80
13.9
None
Climate
None
None
The positional (lat,long) accuracy is that of the underlying DEM.
The accuracy of the specific predictions has not yet been documented in this metadata.
Data is complete and continuous for land within spatial extent.
Nicholas Crookston and Gerald Rehfeldt
2010-05-17
Map of Growing season precipitation, April to September across All North America
Ascii grid
zip file
1961
1990
ground condition
Daily data temperature and precipitation data was collected at many stations.
This daily data was averaged by month. Monthly data was normalized over a
thirty-year time period. Monthly normals are available at http://forest.moscowfsl.wsu.edu/climate/current/
2010-05-17
AnuSplin 4.3 software was used to fit continuous
spline surfaces to monthly normals. This software can be found here:
http://cres.anu.edu.au/outputs/anusplin.php
Spline coefficients defining the surfaces can be found on our website.
These surfaces represent monthly minimum, avgerage, and maximum temperatures;
and cumulative precipitation, as functions of lattitude, longitude, and elevation.
2010-05-17
Surfaces were then used generate a grid of monthly temperature and precipitation values
based on NOAA Global Land One-km Base Elevation (GLOBE) grid map. GLOBE metadata can be found at
http://www.ngdc.noaa.gov/nmmrview/xmls/fgdc.jsp?id=gov.noaa.ngdc:G01180&view=html
2010-05-17
Finally, this grid of Growing season precipitation, April to September was generated directly.
2010-05-17
0.00833333
0.00833333
Decimal degrees
World Geodetic System of 1984
World Geodetic System of 1984
6378137
298.25722210088
N/A
N/A
mm
20100408
20100408
20100408
Nicholas Crookston
Moscow Forestry Sciences Lab
mailing and physical
1221 S. Main
Moscow
ID
83843
208.882.2317
ncrookston@fs.fed.us
FGDC Biological Data Profile of the Content Standard for Digital Geospatial Metadata
FGDC-STD-001.1-1999