Lack of cold temperatures is driving recent high‑summer warming in the southern Rocky Mountains

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652079%3A_____%2F25%3A00639835" target="_blank" >RIV/86652079:_____/25:00639835 - isvavai.cz</a>

Výsledek na webu

<a href="https://link.springer.com/article/10.1007/s00484-025-02904-9" target="_blank" >https://link.springer.com/article/10.1007/s00484-025-02904-9</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00484-025-02904-9" target="_blank" >10.1007/s00484-025-02904-9</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Lack of cold temperatures is driving recent high‑summer warming in the southern Rocky Mountains

Popis výsledku v původním jazyce

We present a 483-year-long tree-ring chronology from a high-elevation Engelmann spruce stand in central Colorado. Over 800,000 density measurements produce a maximum latewood density (MXD) record, which together with tree-ring widths, is used to assess the climatic influences on radial tree growth. Variability in MXD is strongly related to local and regional August maximum temperatures (T-max) for 127 years of overlapping instrumental climate data. A single-predictor reconstruction based on the MXD record explains > 50% of the variance in regional August T-max is presented and considered robust for the period 1662-2021. The estimates of past temperature variability display phases of continuous cold conditions that are beyond the range of the instrumental record, including the 1830s. Our results further indicate that August T-max have been higher since the early 1990s than for any other 30-year period in the past 350 years. This recent increase occurs on top of multi-centennial warming, and appears to be driven mainly by less frequent cold summers rather than an increase in warm extremes.

Název v anglickém jazyce

Lack of cold temperatures is driving recent high‑summer warming in the southern Rocky Mountains

Popis výsledku anglicky

We present a 483-year-long tree-ring chronology from a high-elevation Engelmann spruce stand in central Colorado. Over 800,000 density measurements produce a maximum latewood density (MXD) record, which together with tree-ring widths, is used to assess the climatic influences on radial tree growth. Variability in MXD is strongly related to local and regional August maximum temperatures (T-max) for 127 years of overlapping instrumental climate data. A single-predictor reconstruction based on the MXD record explains > 50% of the variance in regional August T-max is presented and considered robust for the period 1662-2021. The estimates of past temperature variability display phases of continuous cold conditions that are beyond the range of the instrumental record, including the 1830s. Our results further indicate that August T-max have been higher since the early 1990s than for any other 30-year period in the past 350 years. This recent increase occurs on top of multi-centennial warming, and appears to be driven mainly by less frequent cold summers rather than an increase in warm extremes.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10509 - Meteorology and atmospheric sciences

Projekt

<a href="/cs/project/EH22_008%2F0004635" target="_blank" >EH22_008/0004635: AdAgriF - Pokročilé metody redukce emisí a sekvestrace skleníkových plynů v zemědělské a lesní krajině pro mitigaci změny klimatu</a><br>

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

International Journal of Biometeorology

ISSN

0020-7128

e-ISSN

1432-1254

Svazek periodika

69

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

12

Strana od-do

1475-1486

Kód UT WoS článku

001456489800001

EID výsledku v databázi Scopus

2-s2.0-105001525052