Willmott and Feddema's Moisture Index Archive:
Monthly Time Series (1950 - 1999)
produced and documented by
Cort J. Willmott and Kenji Matsuura
(with support from NASA's Seasonal to Interannual ESIP)
For additional information concerning this archive,
please contact us at:
Center for Climatic Research
Department of Geography
University of Delaware
Newark, DE 19716
Archive (Version 1.01) released July 1, 2001
GRIDDED DATA SOURCES:
GRIDDED WATER-BUDGET ESTIMATES:
Monthly moisture-index fields were estimated from the
gridded monthly total Eo
and total P
fields according to
Willmott and Feddema (1992)
at the same resolution as the water-balance fields.
There is one file that includes the 50 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.