Baier, Frank and Erbertseder, Thilo and Schwinger, Jörg and Elbern, Hendrik (2013) Impact of different ozone sounding networks on a 4D-Var stratospheric data assimilation system. Quarterly Journal of the Royal Meteorological Society, pp. 1-13. Wiley. doi: [10.1002/qj.2086]. ISSN 0035-9009.
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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/qj.2086/abstract
Abstract
Observing system simulation experiments (OSSEs) are performed to examine the impact of ozonesonde observations on a data assimilation system during a simulated satellite data gap during February 2003. Using the four-dimensional variational chemical data assimilation system SACADA, the relative influence of launch rates and station coverage is investigated. Starting with the VINTERSOL/MATCH campaign, different network and sounding configurations are evaluated. To quantify the performance of assimilation experiments in the lower stratosphere, analysis skill and linear pattern correlation with respect to ERA-Interim reference data are assessed for the 20 km altitude level. Using first-guess and analysis minus observation error statistics, a priori error settings are tuned to optimise the assimilation of simulated and real-world ozone soundings. In summary, it is found that, during satellite data gaps, ozonesonde data can have a significant positive impact on the mean analysis skill depending both on the number of observations and the network layout. A better distributed network based on the GAW system, with 28 stations and three soundings bi-weekly, proves clearly superior to VINTERSOL/MATCH, showing a positive gain in skill of 0.26 compared to a free-running model.
Item URL in elib: | https://elib.dlr.de/111052/ | |||||||||||||||
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Document Type: | Article | |||||||||||||||
Title: | Impact of different ozone sounding networks on a 4D-Var stratospheric data assimilation system | |||||||||||||||
Authors: |
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Date: | 2 January 2013 | |||||||||||||||
Journal or Publication Title: | Quarterly Journal of the Royal Meteorological Society | |||||||||||||||
Refereed publication: | Yes | |||||||||||||||
Open Access: | Yes | |||||||||||||||
Gold Open Access: | No | |||||||||||||||
In SCOPUS: | Yes | |||||||||||||||
In ISI Web of Science: | Yes | |||||||||||||||
DOI : | [10.1002/qj.2086] | |||||||||||||||
Page Range: | pp. 1-13 | |||||||||||||||
Publisher: | Wiley | |||||||||||||||
ISSN: | 0035-9009 | |||||||||||||||
Status: | Published | |||||||||||||||
Keywords: | data assimilation; polar stratospheric ozone; ozonesondes; satellite data | |||||||||||||||
HGF - Research field: | Aeronautics, Space and Transport | |||||||||||||||
HGF - Program: | Space | |||||||||||||||
HGF - Program Themes: | Earth Observation | |||||||||||||||
DLR - Research area: | Raumfahrt | |||||||||||||||
DLR - Program: | R EO - Earth Observation | |||||||||||||||
DLR - Research theme (Project): | R - Vorhaben Datenprodukte für Klima- und Atmosphärenanwendungen (old) | |||||||||||||||
Location: | Oberpfaffenhofen | |||||||||||||||
Institutes and Institutions: | German Remote Sensing Data Center | |||||||||||||||
Deposited By: | Baier, Dr.rer.nat. Frank | |||||||||||||||
Deposited On: | 14 Feb 2017 08:44 | |||||||||||||||
Last Modified: | 20 Jun 2021 15:49 |
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