[Originating_Center='UNH']
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Climate Moisture Indices for the World Water Development Report II
Entry ID:
UNH_WWRDII_CLIMMOIS
Summary
Abstract:
Global field of long-term average annual climate moisture index (CMI,
Willmott and Feddema, 1992) computed using the ratio of annual precipitation (P) to annual potential evapotranspiration, (PET), specifically CMI = (P/PET) when P < PET and CMI = 1 - (PET/P) when P >= PET. The indicator ranges from to +1, with wet climates showing positive CMI, and dry climates negative CMI. PET was estimated using the physically-based function of Shuttleworth and Wallace (1985), which is a modification of the standard Penman-Monteith PET equation. Long-term average precipitation was computed from Mitchell et al. (2003). Coefficient of variability (CV) is computed as the annual standard deviation divided by long-term annual mean.
Related URL
Geographic Coverage
(Click for Interactive Map)
Spatial coordinates
Data Set Citation
Dataset Originator/Creator:
Water Systems Analysis Group
Dataset Title:
Climate Moisture Indices
Dataset Series Name:
World Water Development Report II
Dataset Release Place:
Universty of New Hampshire
Online Resource:
http://wwdrii.sr.unh.edu/sourcematerial/CMI_metadata.html
Temporal Coverage
Start Date:
1901-01-01
Stop Date:
2000-12-31
Location Keywords
Data Resolution
Latitude Resolution:
30 min
Longitude Resolution: 30 min Horizontal Resolution Range: 1 km - < 10 km or approximately .01 degree - < .09 degree Temporal Resolution: annual mean Temporal Resolution Range: Annual Science Keywords
ISO Topic Category
Ancillary Keywords
Data Set Progress
COMPLETE
Originating Center
Data Center
Distribution
Distribution Media:
online
Distribution Format:
JPEG, ASCII, ARC
Fees:
none
Personnel
Role:
INVESTIGATOR
Phone:
(603) 862-1792
Fax:
(603) 862-0188
Email:
charles.vorosmarty at unh.edu
Contact Address:
Water Systems Analysis Group
Complex Systems Research Center
Institute for the Study of Earth, Oceans, and Space
University of New Hampshire
Morse Hall, 39 College Road
City:
DURHAM
Province or State:
NH
Postal Code:
03824
Country:
USA
Publications/References
Fekete, B. M., C. J. Vorosmarty, and W. Grabs. 2002. High-resolution
fields of global runoff combining river discharge and simulated water balances, Global Biogeochemical Cycles, 16 (3): 15-1 to 15-10. Mitchell, T.D., Carter, T.R., Jones, P.D., Hulme,M., New, M., 2004. A comprehensive set of high resolution grids of monthly climate for Europe and the globe: the observed record (1901-2000) and 16 scenarios (2001-2100). Tyndall Centre Working Paper 55. Shuttleworth, W. J. and J. S. Wallace. 1985. Evaporation from sparse crops: an energy combination theory, Quarterly J. R. Meteorol. Soc., 111: 839-855. Willmott, C.J., and J.J. Feddema. 1992. A more rational climatic moisture index. Prof. Geographer 44: 84-87. Creation and Review Dates
DIF Creation Date:
2005-12-07
Last DIF Revision Date:
2005-12-12
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