QuikSCAT measurements and ECMWF wind forecasts - an explorative study
(2005) In Preprint without journal information- Abstract
- The aim of this paper is to study the covariance structure for the difference between satellite measurements and meteorological forecasts of near-surface ocean winds. This type of covariance enters in assimilation techniques such as Kalman filtering.
I all, six residual fields are studied. Us of a Box-Cox transformation leads to approximately symmetrically distributed residual wind speed fields. For these, two isotropic covariance models are explored, both belonging to the Matérn family. Substantial variations in the parameter estimates for the different fields are found.
Analytical expressions for the covariance functions of the original fields are hard to obtain and hence a simulation based approach... (More) - The aim of this paper is to study the covariance structure for the difference between satellite measurements and meteorological forecasts of near-surface ocean winds. This type of covariance enters in assimilation techniques such as Kalman filtering.
I all, six residual fields are studied. Us of a Box-Cox transformation leads to approximately symmetrically distributed residual wind speed fields. For these, two isotropic covariance models are explored, both belonging to the Matérn family. Substantial variations in the parameter estimates for the different fields are found.
Analytical expressions for the covariance functions of the original fields are hard to obtain and hence a simulation based approach is suggested. However, these simulated fields do not resemble the original residual fields very well. Hence, the isotropic covariance model should be reconsidered in further research and the present weather conditions might be considered in an extended dynamical model. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/930215
- author
- Malmberg, Anders LU
- organization
- publishing date
- 2005
- type
- Contribution to journal
- publication status
- unpublished
- subject
- in
- Preprint without journal information
- issue
- 2005:11
- publisher
- Manne Siegbahn Institute
- ISSN
- 0348-7911
- language
- English
- LU publication?
- yes
- id
- b38ae1e4-704c-4c39-96cb-45714f0c5ae0 (old id 930215)
- date added to LUP
- 2016-04-04 09:13:38
- date last changed
- 2018-11-21 20:51:38
@article{b38ae1e4-704c-4c39-96cb-45714f0c5ae0,
abstract = {{The aim of this paper is to study the covariance structure for the difference between satellite measurements and meteorological forecasts of near-surface ocean winds. This type of covariance enters in assimilation techniques such as Kalman filtering.<br/><br>
<br/><br>
I all, six residual fields are studied. Us of a Box-Cox transformation leads to approximately symmetrically distributed residual wind speed fields. For these, two isotropic covariance models are explored, both belonging to the Matérn family. Substantial variations in the parameter estimates for the different fields are found.<br/><br>
<br/><br>
Analytical expressions for the covariance functions of the original fields are hard to obtain and hence a simulation based approach is suggested. However, these simulated fields do not resemble the original residual fields very well. Hence, the isotropic covariance model should be reconsidered in further research and the present weather conditions might be considered in an extended dynamical model.}},
author = {{Malmberg, Anders}},
issn = {{0348-7911}},
language = {{eng}},
number = {{2005:11}},
publisher = {{Manne Siegbahn Institute}},
series = {{Preprint without journal information}},
title = {{QuikSCAT measurements and ECMWF wind forecasts - an explorative study}},
year = {{2005}},
}