Data Assimilation in a One-Dimensional Oceanic Mixed Layer Model.
Abstract
Requirements for an operational oceanic mixed layer model are discussed. Data assimilation comparisons in oceanic modeling studies and in numerical weather prediction are made. A method for assimilating data in one-dimensional oceanic models is described. The Garwood One-Dimensional Oceanic Planetary Boundary Layer Model was modified for insertion of temperature profiles during model integration. The sensitivity of the model to insertions of erroneous temperature data is tested. Insertions were made in winter, summer, and during the spring transition. The hypothesis was formulated that forecasts made by the Garwood model could be improved by using all available past temperature information. Simulated temperature history profiles were created for 14 years between 1953 and 1969. The experiments showed improvement in the 15-day forecasts when 5, 15, or 30 history profiles were included in the initialization of the model. A gross-error check to eliminate erroneous profiles further increased forecast accuracy. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1980
- Accession Number
- ADA100153
Entities
People
- Larry Lee Warrenfeltz
Organizations
- Naval Postgraduate School