Biases in the diurnal temperature range in Central Europe in an ensemble of regional climate models and their possible causes

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378289%3A_____%2F12%3A00380526" target="_blank" >RIV/68378289:_____/12:00380526 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s00382-011-1200-4" target="_blank" >http://dx.doi.org/10.1007/s00382-011-1200-4</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00382-011-1200-4" target="_blank" >10.1007/s00382-011-1200-4</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Biases in the diurnal temperature range in Central Europe in an ensemble of regional climate models and their possible causes

Popis výsledku v původním jazyce

The study examines how regional climate models (RCMs) reproduce the diurnal temperature range (DTR) in their control simulations over Central Europe. We evaluate 30-year runs driven by perfect boundary conditions (the ERA40 reanalysis, 1961?1990) and a global climate model (ECHAM5) of an ensemble of RCMs with 25-km resolution from the ENSEMBLES project. The RCMs? performance is compared against the dataset gridded from a high-density stations network. We find that all RCMs underestimate DTR in all seasons, notwithstanding whether driven by ERA40 or ECHAM5. Underestimation is largest in summer and smallest in winter in most RCMs. The relationship of the models? errors to indices of atmospheric circulation and cloud cover is discussed to reveal possiblecauses of the biases. Errors in simulating heat and moisture fluxes between land surface and atmosphere probably contribute to the biases in DTR as well.

Název v anglickém jazyce

Biases in the diurnal temperature range in Central Europe in an ensemble of regional climate models and their possible causes

Popis výsledku anglicky

The study examines how regional climate models (RCMs) reproduce the diurnal temperature range (DTR) in their control simulations over Central Europe. We evaluate 30-year runs driven by perfect boundary conditions (the ERA40 reanalysis, 1961?1990) and a global climate model (ECHAM5) of an ensemble of RCMs with 25-km resolution from the ENSEMBLES project. The RCMs? performance is compared against the dataset gridded from a high-density stations network. We find that all RCMs underestimate DTR in all seasons, notwithstanding whether driven by ERA40 or ECHAM5. Underestimation is largest in summer and smallest in winter in most RCMs. The relationship of the models? errors to indices of atmospheric circulation and cloud cover is discussed to reveal possiblecauses of the biases. Errors in simulating heat and moisture fluxes between land surface and atmosphere probably contribute to the biases in DTR as well.

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

<a href="/cs/project/GAP209%2F10%2F2265" target="_blank" >GAP209/10/2265: Reprodukce vztahů mezi atmosférickou cirkulací a rozděleními přízemní teploty vzduchu a srážek v klimatických modelech</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název periodika

Climate Dynamics

ISSN

0930-7575

e-ISSN

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Svazek periodika

39

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

12

Strana od-do

1275-1286

Kód UT WoS článku

000308722900004

EID výsledku v databázi Scopus

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