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RISErrors of Five-Day Mean Surface Wind and Temperature Conditions due to Inadequate Sampling
Publisher: American Meteorological Society
Abstract: Surface meteorological reports of wind components, wind speed, air temperature, and sea surface temperature from buoys located in equatorial and midlatitude regions are used in a simulation of random sampling to determine ...
Empirical Orthogonal Function Analysis of Wind Vectors over the Tropical Pacific Region
Publisher: American Meteorological Society
Abstract: The method of empirical orthogonal function analysis is applied to wind stress vectors over the tropical Pacific Ocean from 1961 through 1978. It is determined that this vector analysis enables a more thorough analysis of ...
Development and Testing of a Simple Assimilation Technique to Derive Average Wind Fields from Simulated Scatterometer Data
Publisher: American Meteorological Society
Abstract: A simple algorithm is developed and tested to derive a regularly spaced wind field in a limited arm from simulated multi-orbit scatterometer data. The data are generated by sampling a time-varying known wind field, the ...
Conjugate-Gradient Methods for Large-Scale Minimization in Meteorology
Publisher: American Meteorological Society
Abstract: During the last few years new meteorological variational analysis methods have evolved, requiring large-scale minimization of a nonlinear objective function described in terms of discrete variables. The conjugate-gradient ...
Information Content in the ERS-1 Three-Day Repeat Orbit Scatterometer Winds over the North Pacific from January through March 1992
Publisher: American Meteorological Society
Abstract: This study examines ERS-1 3-day repeat orbit scatterometer wind data from January through March 1992. The study region encompasses the North Pacific from 30° to 50°N and 160°E to 130°W longitude. The data are separated by ...
Objective Analysis of Pseudostress over the Indian Ocean Using a Direct-Minimization Approach
Publisher: American Meteorological Society
Abstract: A variational approach is used to develop an objective analysis technique which produces monthly average 1-deg pseudostress vector fields over the Indian Ocean. A, cost functional is constructed which consists of five ...
Interannual Variability of Synthesized FSU and NCEP-NCAR Reanalysis Pseudostress Products over the Pacific Ocean
Publisher: American Meteorological Society
Abstract: A technique is applied to seamlessly blend height-adjusted Florida State University (FSU) surface wind pseudostress with National Centers for Environmental Prediction?National Center for Atmospheric Research (NCEP?NCAR) ...
Quantifying Uncertainties in NCEP Reanalyses Using High-Quality Research Vessel Observations
Publisher: American Meteorological Society
Abstract: The uncertainties in the NCEP?NCAR reanalysis (NCEPR) products are not well known. Using a newly developed, high-resolution, quality controlled, surface meteorology dataset from research vessels participating in the World ...
In Situ–Based Pseudo–Wind Stress Products for the Tropical Oceans
Publisher: American Meteorological Society
Abstract: Quality wind stress fields are desired for a wide range of oceanographic and atmospheric studies. An overview is presented of the monthly quick-look and research-quality tropical ocean wind (pseudostress) products produced ...