Willmott and Feddema's Moisture Index Archive:
Monthly Time Series (1900 - 2010)
produced and documented by
Cort J. Willmott and Kenji Matsuura
[with support from NASA's Innovation in Climate Education (NICE) Program]
For additional information concerning this archive,
please contact us at:
Department of Geography
University of Delaware
Newark, DE 19716
Archive (Version 2.02) released in December, 2012
GRIDDED DATA SOURCES:
GRIDDED WATER-BUDGET ESTIMATES:
Monthly moisture-index fields were estimated from the
gridded monthly Eo
fields according to
Willmott and Feddema (1992)
at the same resolution as the water-budget fields.
There is one file (im.tar.gz) that includes the 111 yearly files.
All yearly files have the same structure (once they are uncompressed).
Please note that annual moisture index was computed
from the 12-month totals of Eo and P.
||1 - 8
||Longitude (decimal degrees)
||9 - 16
||Latitude (decimal degrees)
||17 - 112
||Monthly Moisture Indices
||113 - 120
||Annual Moiture Indices
Willmott, C. J., C. M. Rowe, and Y. Mintz, 1985b. Climatology of
the Terrestrial Seasonal Water Cycle. Journal of Climatology, 5,
Willmott, C. J. and J. J. Feddema, 1992. A More Rational Climatic
Moisture Index. Professional Geographer, 44(1), 84-88.