A 250-year reconstruction of average July air temperatures (1775-2024): A key climate indicator of vegetation growth in the alpine treeline ecotone of the High Tatra Mts, Slovakia

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F25%3A00646953" target="_blank" >RIV/60077344:_____/25:00646953 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60076658:12310/25:43910784

Výsledek na webu

<a href="https://doi.org/10.31577/congeo.2025.55.3.4" target="_blank" >https://doi.org/10.31577/congeo.2025.55.3.4</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.31577/congeo.2025.55.3.4" target="_blank" >10.31577/congeo.2025.55.3.4</a>

Jazyk výsledku

angličtina

Název v původním jazyce

A 250-year reconstruction of average July air temperatures (1775-2024): A key climate indicator of vegetation growth in the alpine treeline ecotone of the High Tatra Mts, Slovakia

Popis výsledku v původním jazyce

The reconstruction of historical air temperatures over the past 250 years (1775-2024) in the alpine treeline ecotone (ATE) of the High Tatra Mts, Slovakia, provides insights into long-term climate variability. As a high-elevation region sensitive to climatic fluctuations, the alpine treeline is a key indicator of environmental change. A model-based approach allows estimation of air temperature where direct measurements are lacking, offering a tool for assessing long-term climate impacts in high mountains. This study models the July monthly average air temperature (JL-Tavg) and the 10 degrees C July isotherm, a climatic threshold for vegetation growth. The regression model is based on the environmental temperature lapse rate (ETL), assuming a systematic decrease in temperature with altitude (- 0.65 degrees C per 100 m). Using air temperature data from European stations spanning 191-3109 m a.s.l., the model estimated ETL, which was then applied to reconstruct JL-Tavg and track the 10 degrees C isotherm across the Skalnata dolina ATE profile. The regression model showed a good fit between observed and predicted values, with root mean square error lower than the standard deviation of average JL-Tavg. Reconstructed data indicate that the 10 degrees C July isotherm fluctuated markedly between 1775 and 2024. The alpine treeline, defined as the elevation with zero probability of tree growth, varied from 2000 m a.s.l. during the cooler phase (1875-1974) to 2300 m a.s.l. in the warmer phase (1775-1874). Since 1975, accelerated warming has shifted this thermal boundary upward to 2400 m a.s.l., now representing the upper cold limit for alpine tree growth in the southern High Tatra Mts. Future work should integrate field monitoring, such as mapping dwarf pine above 2000 m a.s.l., to evaluate current distributional limits under ongoing warming.

Název v anglickém jazyce

A 250-year reconstruction of average July air temperatures (1775-2024): A key climate indicator of vegetation growth in the alpine treeline ecotone of the High Tatra Mts, Slovakia

Popis výsledku anglicky

The reconstruction of historical air temperatures over the past 250 years (1775-2024) in the alpine treeline ecotone (ATE) of the High Tatra Mts, Slovakia, provides insights into long-term climate variability. As a high-elevation region sensitive to climatic fluctuations, the alpine treeline is a key indicator of environmental change. A model-based approach allows estimation of air temperature where direct measurements are lacking, offering a tool for assessing long-term climate impacts in high mountains. This study models the July monthly average air temperature (JL-Tavg) and the 10 degrees C July isotherm, a climatic threshold for vegetation growth. The regression model is based on the environmental temperature lapse rate (ETL), assuming a systematic decrease in temperature with altitude (- 0.65 degrees C per 100 m). Using air temperature data from European stations spanning 191-3109 m a.s.l., the model estimated ETL, which was then applied to reconstruct JL-Tavg and track the 10 degrees C isotherm across the Skalnata dolina ATE profile. The regression model showed a good fit between observed and predicted values, with root mean square error lower than the standard deviation of average JL-Tavg. Reconstructed data indicate that the 10 degrees C July isotherm fluctuated markedly between 1775 and 2024. The alpine treeline, defined as the elevation with zero probability of tree growth, varied from 2000 m a.s.l. during the cooler phase (1875-1974) to 2300 m a.s.l. in the warmer phase (1775-1874). Since 1975, accelerated warming has shifted this thermal boundary upward to 2400 m a.s.l., now representing the upper cold limit for alpine tree growth in the southern High Tatra Mts. Future work should integrate field monitoring, such as mapping dwarf pine above 2000 m a.s.l., to evaluate current distributional limits under ongoing warming.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10509 - Meteorology and atmospheric sciences

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Contributions to geophysics and geodesy

ISSN

1338-0540

e-ISSN

1338-0540

Svazek periodika

55

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

SK - Slovenská republika

Počet stran výsledku

22

Strana od-do

341-362

Kód UT WoS článku

001673406700004

EID výsledku v databázi Scopus

2-s2.0-105028262094