Validation of ERA5-Land-based reconstructed air temperature and near-surface ground temperature on James Ross Island
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F25%3A00140481" target="_blank" >RIV/00216224:14310/25:00140481 - isvavai.cz</a>
Výsledek na webu
<a href="https://doi.org/10.1080/1088937X.2024.2434744" target="_blank" >https://doi.org/10.1080/1088937X.2024.2434744</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1080/1088937X.2024.2434744" target="_blank" >10.1080/1088937X.2024.2434744</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Validation of ERA5-Land-based reconstructed air temperature and near-surface ground temperature on James Ross Island
Popis výsledku v původním jazyce
This study evaluates the accuracy of ERA5-Land reanalysis products by comparing them with continuous data from James Ross Island, Antarctic Peninsula. ERA5-Land shows lower variability in air and ground temperatures than measurements from three automatic weather stations (AWSs) on James Ross Island: Johann Gregor Mendel (AWS-JGM), Abernethy Flats (AWS-AF), and Johnson Mesa (AWS-JM). Differences in mean annual air temperature (MAAT) and mean annual ground temperature at 5 cm depth (MAGT5) are noted between ERA5-Land and AWSs for the periods 2007/08-2020/21 and 2011/12-2020/21. Strong correlations (0.88-0.92) exist between ERA5-Land and AWSs, with the highest coefficients and lowest RMSE values for AWS-JM (2.7 °C for AT and 4.9 °C for GT5). Validation statistics reveal seasonal variations in ERA5-Land temperature bias with larger discrepancies in summer and low differences in winter. ERA5-Land's snow depth estimation indicates unrealistic permanent snow cover between 3-24 meters, affecting ground temperature bias and underestimation. Despite its benefits, ERA5-Land's inaccuracies in ground temperature data limit its direct use for permafrost research. Corrections were applied to enhance the use of ERA5-Land data for detailed permafrost studies in the JRI area.
Název v anglickém jazyce
Validation of ERA5-Land-based reconstructed air temperature and near-surface ground temperature on James Ross Island
Popis výsledku anglicky
This study evaluates the accuracy of ERA5-Land reanalysis products by comparing them with continuous data from James Ross Island, Antarctic Peninsula. ERA5-Land shows lower variability in air and ground temperatures than measurements from three automatic weather stations (AWSs) on James Ross Island: Johann Gregor Mendel (AWS-JGM), Abernethy Flats (AWS-AF), and Johnson Mesa (AWS-JM). Differences in mean annual air temperature (MAAT) and mean annual ground temperature at 5 cm depth (MAGT5) are noted between ERA5-Land and AWSs for the periods 2007/08-2020/21 and 2011/12-2020/21. Strong correlations (0.88-0.92) exist between ERA5-Land and AWSs, with the highest coefficients and lowest RMSE values for AWS-JM (2.7 °C for AT and 4.9 °C for GT5). Validation statistics reveal seasonal variations in ERA5-Land temperature bias with larger discrepancies in summer and low differences in winter. ERA5-Land's snow depth estimation indicates unrealistic permanent snow cover between 3-24 meters, affecting ground temperature bias and underestimation. Despite its benefits, ERA5-Land's inaccuracies in ground temperature data limit its direct use for permafrost research. Corrections were applied to enhance the use of ERA5-Land data for detailed permafrost studies in the JRI area.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10510 - Climatic research
Návaznosti výsledku
Projekt
<a href="/cs/project/GM22-28659M" target="_blank" >GM22-28659M: Vliv změny klimatu na dynamiku periglaciálního prostředí v oblasti Antarktického poloostrova</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach
Ostatní
Rok uplatnění
2025
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Polar Geography
ISSN
1088-937X
e-ISSN
1939-0513
Svazek periodika
48
Číslo periodika v rámci svazku
2
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
21
Strana od-do
95-115
Kód UT WoS článku
001368520300001
EID výsledku v databázi Scopus
2-s2.0-85211799932