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Source function estimate by means of variational data assimilation applied to the ETEX-I tracer experiment
SMHI, Forskningsavdelningen, Luftmiljö.ORCID-id: 0000-0003-2738-5556
SMHI, Forskningsavdelningen, Luftmiljö.ORCID-id: 0000-0002-2757-2864
1998 (Engelska)Ingår i: Atmospheric Environment, ISSN 1352-2310, E-ISSN 1873-2844, Vol. 32, nr 24, s. 4219-4225Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

The ETEX data set opens new possibilities to develop data assimilation procedures in the area of long-range transport. This paper illustrates the possibilities using a variational approach, where the source term for ETEX-I was reconstructed. The MATCH model (Robertson et at., 1996) has been the basis for this attempt. The timing of the derived emission rates are in accordance with the time period for the ETEX-I release, and a cross validation, with observations beyond the selected assimilation period, shows that the source term gained holds for the entire ETEX-I experiment. A poor-man variational approach was shown to perform nearly as good as a fully variational data assimilation. The issue of quality control has not been considered in this attempt but will be an important part that has to be addressed in future work. (C) 1998 Elsevier Science Ltd. All rights reserved.

Ort, förlag, år, upplaga, sidor
1998. Vol. 32, nr 24, s. 4219-4225
Nyckelord [en]
data assimilation, source estimate, Eulerian transport model
Nationell ämneskategori
Miljövetenskap
Forskningsämne
Miljö
Identifikatorer
URN: urn:nbn:se:smhi:diva-1546DOI: 10.1016/S1352-2310(98)00176-9ISI: 000077118300012OAI: oai:DiVA.org:smhi-1546DiVA, id: diva2:851251
Tillgänglig från: 2015-09-04 Skapad: 2015-08-31 Senast uppdaterad: 2017-12-04Bibliografiskt granskad

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Robertson, LennartLangner, Joakim

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