Detection and analysis of anomalies in brightness temperature difference field above convective storms

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Detection and analysis of anomalies in brightness temperature difference field above convective storms

Popis výsledku v původním jazyce

This paper presents a method for detection of anomalies in brightness temperature difference (BTD) between WV and IR window bands above convective storms. This method is based on thresholding technique using thresholds depending on the dispersion of theBTD data. The detection algorithm was applied to a dataset of convective storms over Europe from season 2008. Its outputs are used to investigate the relationship between occurrences of BTD anomalies, of positive BTDs in general and stage of the storm evolution. The results indicate that the occurrence of BTD anomalies is more variable in time relative to the storm stage than the occurrence of positive BTDs in general. In addition, we show time evolutions of medians of positive BTDs and of appropriate IR window brightness temperatures for the storm on 14 July 2008 which significantly differ from such evolutions for all other storms in the dataset. We discuss possible explanation of this difference and its probable connection to the posi

Název v anglickém jazyce

Detection and analysis of anomalies in brightness temperature difference field above convective storms

Popis výsledku anglicky

This paper presents a method for detection of anomalies in brightness temperature difference (BTD) between WV and IR window bands above convective storms. This method is based on thresholding technique using thresholds depending on the dispersion of theBTD data. The detection algorithm was applied to a dataset of convective storms over Europe from season 2008. Its outputs are used to investigate the relationship between occurrences of BTD anomalies, of positive BTDs in general and stage of the storm evolution. The results indicate that the occurrence of BTD anomalies is more variable in time relative to the storm stage than the occurrence of positive BTDs in general. In addition, we show time evolutions of medians of positive BTDs and of appropriate IR window brightness temperatures for the storm on 14 July 2008 which significantly differ from such evolutions for all other storms in the dataset. We discuss possible explanation of this difference and its probable connection to the posi

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DG - Vědy o atmosféře, meteorologie

OECD FORD obor

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Projekt

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Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2012

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

2012 EUMETSAT Meteorological Satellite Conference. Proceedings

ISSN

1011-3932

e-ISSN

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Svazek periodika

61

Číslo periodika v rámci svazku

podzim

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

8

Strana od-do

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Kód UT WoS článku

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EID výsledku v databázi Scopus

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