A Parallel Algorithm for Variational Assimilation in Oceanography and Meteorology Public Deposited

http://ir.library.oregonstate.edu/concern/defaults/1v53jz474

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • A parallel algorithm is described for variational assimilation of observations into oceanic and atmospheric models. The algorithm may be coded first for execution on a serial computer and then trivially modified for execution on a parallel computer such as the Intel iPSC/860. The speedup factor for parallel execution is roughly P(2M+3) (2M+3P)⁻¹, where P is the number of processors and M is the number of observations (M≥P). The speedup factor approaches P from below as M/P→∞. The algorithm has been applied in serial form to ocean tides (Bennett and McIntosh 1982; McIntosh and Bennett 1984; Bennett 1985) and oceanic equatorial interannual variability (Bennett 1990). It has been applied in parallel form to oceanic synoptic-scale circulation (Bennett and Thorburn 1992); a parallel application to operational forecasting of tropical cyclones is in progress (Bennett et al. 1992). For the sake of simplicity, the parallel algorithm is described here for a model consisting of a linear, first-order wave equation with initial and boundary conditions plus a dataset consisting of observations at isolated points in space and time. However, measurements of parallel performance are given for a nonlinear quasigeostrophic model.
Resource Type
DOI
Date Available
Date Issued
Citation
  • Bennett, Andrew F., Jerome R. Baugh, 1992: A Parallel Algorithm for Variational Assimilation in Oceanography and Meteorology. Journal of Atmospheric and Oceanic Technolology, 9, 426–433.
Series
Rights Statement
Funding Statement (additional comments about funding)
Publisher
Peer Reviewed
Language
Replaces
Additional Information
  • description.provenance : Submitted by Deborah Campbell (deborah.campbell@oregonstate.edu) on 2012-02-15T23:29:52Z No. of bitstreams: 1 BennettAndrewF.CEOAS.ParallelAlgorithmVariational.pdf: 723296 bytes, checksum: b9272e8cc1a58df026539d8b84cd366e (MD5)
  • description.provenance : Made available in DSpace on 2012-02-15T23:29:52Z (GMT). No. of bitstreams: 1 BennettAndrewF.CEOAS.ParallelAlgorithmVariational.pdf: 723296 bytes, checksum: b9272e8cc1a58df026539d8b84cd366e (MD5) Previous issue date: 1992-08

Relationships

Parents:

This work has no parents.

Last modified

Downloadable Content

Download PDF

Items