PIRCS Observed/Analyzed Fields

Experiment 1a: 15 May - 15 July 1988

Fields from daily observations by the U.S. Cooperative Observing Network (NCDC, 1990), archived by the U.S. National Climatic Data Center

Accumulated precipitation-1988, gridded at half-degree using a five-iteration Cressman scheme in which the radius of influence starts at 900 km and is halved in successive iterations.

Fields from the Gridded Hourly Precipitation Data Base of Higgins et al. (1996):

Fields from NCEP/NCAR reanalysis output (Kalnay et al., 1996):

Experiment 1b: 1 June - 31 July 1993

Fields from daily observations by the U.S. Cooperative Observing Network (NCDC, 1990), archived by the U.S. National Climatic Data Center

Accumulated precipitation-1993, gridded at half-degree using a five-iteration Cressman scheme in which the radius of influence starts at 900 km and is halved in successive iterations.

Fields from the Gridded Hourly Precipitation Data Base of Higgins et al. (1996):

Fields from NCEP/NCAR reanalysis output (Kalnay et al., 1996):

References:

Higgins, R.W., J.E. Janowiak and Y. Yao, 1996: A gridded hourly precipitation data base for the United States (1963-1993). NCEP/Climate Prediction Center Atlas No. 1, 47 pp.
[Available from NCEP/Climate Prediction Center, W/NP52, Washington, DC 20233.]

Kalnay, E., M. Kanamitsu, R. Kistler, W. Collins, D. Deaven, L. Gandin, M. Iredell, S. Saha, G. White, J. Woollen, Y. Zhu, M. Chelliah, W. Ebisuzaki, W.Higgins, J. Janowiak, K. C. Mo, C. Ropelewski, J. Wang, A. Leetmaa, R. Reynolds, R. Jenne, D. Joseph, 1996: The NCEP/NCAR 40-Year Reanalysis Project. Bull. Amer. Meteor. Soc., 76, 437-471.

NCDC (National Climatic Data Center), 1990: Hourly Precipitation Data. TD-3240, U.S. Department of Commerce, 21 pp.