Showing papers on "Weather station published in 1973"

Comparison of wave hindcasts at weather station “J” for North Atlantic storm of December, 1959

Abstract: The severe storm of December 1959 generated high waves which were measured by the ship-borne wave recorder on the weathership “Weather Reporter” at Station “J” in the North Atlantic. A co-operative effort of wave hindcasters in Germany, Britain, France and U.S.A. led to preparation of wave energy spectra from the wave records, and the publication in “Deutsche Hydrographische Zeitschrift” (Bretschneider et al. [1962]) of the measured data under joint authorship of the collaborators, as well as to the furnishing to participants of identical synoptic weather maps. Individual investigators (Walden, Germany; Darbyshire, Britain; Miche, France; Bretschneider, Neumann, Pierson, and Wilson, U.S.A.) were then supposed to apply their particular prediction techniques for comparison of hindcast waves with the wave conditions measured. This note attempts to compare available published and unpublished results of the analyses.

A Discussion of the Wave Records Obtained at Weather Station Papa, Pacific Ocean

Abstract: Some statistical characteristics of measured deepwater data obtained at weather station Papa during the five most severe storms December 1968 - January 1971 are compared with theoretical values. A statistical analysis of the probability distribution of wave heights and periods was obtained from a computer algorithm, and statistical parameter compared to Rayleigh distributuions. Other comparisons are made with Tucher's method and with Bretschneider's distribution function.

Processed Wind and Wave Measurements from Ocean Weather Station PAPA

Abstract: : As part of an investigation into the environmental conditions existing in the North Pacific Ocean, observational data collected from ships occupying Ocean Weather Station PAPA were obtained from the Canadian Atmospheric Environment Service. Wind and wave data for the fall and winter months over the period 1951 through 1971 were processed. Wind speed and wave height were examined using a computer program to construct histograms displaying data distribution a monthly basis. Data were divided into two intervals (1951 through 1961, and 1962 through 1971) to compare the two periods since their is a general belief that wind/wave severity has diminished during the past 20 years. The histograms included in the report show that maximum wind speed data and the mean wave height data as reported indicate a definite lessening in environmental severity at the location. Mean wind speed data show a similar trend, but of a much smaller extent.