The Naval Research Laboratory Reanalysis Project
Abstract
Reanalysis projects have been proposed and are being aggressively pursued at several major numerical weather prediction centers. Each center has its own motivations for mounting these very ambitious projects, but there are also several common motivations. These include: (1) An extended period of data assimilation such as a reanalysis is an excellent way to test and validate an operational system in a controlled environment without the pressure of operational schedules. (2) Because the reanalysis is done with a 'frozen' version of the data assimilation system, the resulting time series of analysis is homogeneous, without the inevitable discontinuities that occur with constantly changing real-time operational systems. This is particularity important for ocean models, which are very sensitive to atmospheric surface forcing and can produce misleading results if this forcing is abruptly changed because of atmospheric model changes. (3) A homogeneous time series of atmosphere analyses offers the best hope of detecting and predicting global warming and climate change.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 02, 1993
- Accession Number
- ADA269662
Entities
People
- Thomas E. Rosmond
Organizations
- United States Naval Research Laboratory