High-Resolution Numerical Modelling of Near-Surface Atmospheric
Fields in the Complex Terrain of James Ross Island, Antarctic
Peninsula

J 2021

High-Resolution Numerical Modelling of Near-Surface Atmospheric Fields in the Complex Terrain of James Ross Island, Antarctic Peninsula

MATĚJKA, Michael, Kamil LÁSKA, Klára JEKLOVÁ a Jiří HOŠEK

Základní údaje

Originální název

High-Resolution Numerical Modelling of Near-Surface Atmospheric Fields in the Complex Terrain of James Ross Island, Antarctic Peninsula

Autoři

MATĚJKA, Michael (203 Česká republika, garant, domácí), Kamil LÁSKA (203 Česká republika, domácí), Klára JEKLOVÁ (203 Česká republika, domácí) a Jiří HOŠEK (203 Česká republika, domácí)

Vydání

Atmosphere, Basel, MDPI, 2021, 2073-4433

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10508 Physical geography

Stát vydavatele

Švýcarsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 3.110

Kód RIV

RIV/00216224:14310/21:00118898

Organizační jednotka

Přírodovědecká fakulta

DOI

http://dx.doi.org/10.3390/atmos12030360

UT WoS

000633348800001

Klíčová slova anglicky

air temperature simulation; atmospheric model validation; bare ground; glacier; polar me- teorology; Weather Research and Forecasting (WRF) model; wind speed simulation; Ulu Peninsula

Štítky

rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 19. 4. 2021 17:32, Mgr. Marie Šípková, DiS.

Anotace

V originále

The Antarctic Peninsula belongs to the regions of the Earth that have seen the highest increase in air temperature in the past few decades. The warming is reflected in degradation of the cryospheric system. The impact of climate variability and interactions between the atmosphere and the cryosphere can be studied using numerical atmospheric models. In this study, the standard version of the Weather Research and Forecasting (WRF) model was validated on James Ross Island in the northern part of the Antarctic Peninsula. The aim of this study was to verify the WRF model output at 700 m horizontal resolution using air temperature, wind speed and wind direction observations from automatic weather stations on the Ulu Peninsula, the northernmost part of James Ross Island. Validation was carried out for two contrasting periods (summer and winter) in 2019/2020 to assess possible seasonal effects on model accuracy. Simulated air temperatures were in very good agreement with measurements (mean bias -1.7 °C to 1.4 °C). The exception was a strong air temperature inversion during two of the winter days when a significant positive bias occurred at the coastal and lower-altitude locations on the Ulu Peninsula. Further analysis of the WRF estimates showed a good skill in simulating near-surface wind speed with higher correlation coefficients in winter (0.81–0.93) than in summer (0.41–0.59). However, bias and RMSE for wind speed tended to be better in summer. The performance of three WRF boundary layer schemes (MYJ, MYNN, QNSE) was further evaluated. The QNSE scheme was generally more accurate than MYNN and MYJ, but the differences were quite small and varied with time and place. The MYNN and QNSE schemes tended to achieve better wind speed simulation quality than the MYJ scheme. The model successfully captured wind direction, showing only slight differences to the observed values. It was shown that at lower altitudes the performance of the model can vary greatly with time. The model results were more accurate during high wind speed southwestern flow, while the accuracy decreased under weak synoptic-scale forcing, accompanied by an occurrence of mesoscale atmospheric processes.

Návaznosti

EF16_013/0001708, projekt VaV

Název: ECOPOLARIS - Změny ve struktuře a funkci součástí terestrických polárních ekosystémů (CzechPolar2)

GA20-20240S, projekt VaV

Název: Dopady klimatické změny na tání sněhu a ledu v oblasti Antarktického poloostrova

Investor: Grantová agentura ČR, Dopady klimatické změny na tání sněhu a ledu v oblasti Antarktického poloostrova

MUNI/A/1570/2020, interní kód MU

Název: Geografický výzkum dynamiky přírodních a společenských prostorových procesů (Akronym: GEODYN)

Investor: Masarykova univerzita, Geografický výzkum dynamiky přírodních a společenských prostorových procesů

Citovat

MATĚJKA, Michael, Kamil LÁSKA, Klára JEKLOVÁ a Jiří HOŠEK. High-Resolution Numerical Modelling of Near-Surface Atmospheric Fields in the Complex Terrain of James Ross Island, Antarctic Peninsula. Atmosphere. Basel: MDPI, 2021, roč. 12, č. 3, s. "360", 21 s. ISSN 2073-4433. Dostupné z: https://dx.doi.org/10.3390/atmos12030360.

@article{1754505,
   author = {Matějka, Michael and Láska, Kamil and Jeklová, Klára and Hošek, Jiří},
   article_location = {Basel},
   article_number = {3},
   doi = {http://dx.doi.org/10.3390/atmos12030360},
   keywords = {air temperature simulation; atmospheric model validation; bare ground; glacier; polar me- teorology; Weather Research and Forecasting (WRF) model; wind speed simulation; Ulu Peninsula},
   language = {eng},
   issn = {2073-4433},
   journal = {Atmosphere},
   title = {High-Resolution Numerical Modelling of Near-Surface Atmospheric Fields in the Complex Terrain of James Ross Island, Antarctic Peninsula},
   url = {https://doi.org/10.3390/atmos12030360},
   volume = {12},
   year = {2021}
}

TY  - JOUR
ID  - 1754505
AU  - Matějka, Michael - Láska, Kamil - Jeklová, Klára - Hošek, Jiří
PY  - 2021
TI  - High-Resolution Numerical Modelling of Near-Surface Atmospheric Fields in the Complex Terrain of James Ross Island, Antarctic Peninsula
JF  - Atmosphere
VL  - 12
IS  - 3
SP  - "360"
EP  - "360"
PB  - MDPI
SN  - 20734433
KW  - air temperature simulation
KW  - atmospheric model validation
KW  - bare ground
KW  - glacier
KW  - polar me- teorology
KW  - Weather Research and Forecasting (WRF) model
KW  - wind speed simulation
KW  - Ulu Peninsula
UR  - https://doi.org/10.3390/atmos12030360
N2  - The Antarctic Peninsula belongs to the regions of the Earth that have seen the highest increase in air temperature in the past few decades. The warming is reflected in degradation of the cryospheric system. The impact of climate variability and interactions between the atmosphere and the cryosphere can be studied using numerical atmospheric models. In this study, the standard version of the Weather Research and Forecasting (WRF) model was validated on James Ross Island in the northern part of the Antarctic Peninsula. The aim of this study was to verify the WRF model output at 700 m horizontal resolution using air temperature, wind speed and wind direction observations from automatic weather stations on the Ulu Peninsula, the northernmost part of James Ross Island. Validation was carried out for two contrasting periods (summer and winter) in 2019/2020 to assess possible seasonal effects on model accuracy. Simulated air temperatures were in very good agreement with measurements (mean bias -1.7 °C to 1.4 °C). The exception was a strong air temperature inversion during two of the winter days when a significant positive bias occurred at the coastal and lower-altitude locations on the Ulu Peninsula. Further analysis of the WRF estimates showed a good skill in simulating near-surface wind speed with higher correlation coefficients in winter (0.81–0.93) than in summer (0.41–0.59). However, bias and RMSE for wind speed tended to be better in summer. The performance of three WRF boundary layer schemes (MYJ, MYNN, QNSE) was further evaluated. The QNSE scheme was generally more accurate than MYNN and MYJ, but the differences were quite small and varied with time and place. The MYNN and QNSE schemes tended to achieve better wind speed simulation quality than the MYJ scheme. The model successfully captured wind direction, showing only slight differences to the observed values. It was shown that at lower altitudes the performance of the model can vary greatly with time. The model results were more accurate during high wind speed southwestern flow, while the accuracy decreased under weak synoptic-scale forcing, accompanied by an occurrence of mesoscale atmospheric processes.
ER  -

MATĚJKA, Michael, Kamil LÁSKA, Klára JEKLOVÁ a Jiří HOŠEK. High-Resolution Numerical Modelling of Near-Surface Atmospheric Fields in the Complex Terrain of James Ross Island, Antarctic Peninsula. \textit{Atmosphere}. Basel: MDPI, 2021, roč.~12, č.~3, s.~''360'', 21 s. ISSN~2073-4433. Dostupné z: https://dx.doi.org/10.3390/atmos12030360.

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