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

Result code in 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>
Result on the web
<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>

Result language
angličtina
Original language name
Lack of cold temperatures is driving recent high‑summer warming in the southern Rocky Mountains
Original language description
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.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10509 - Meteorology and atmospheric sciences

Project
<a href="/en/project/EH22_008%2F0004635" target="_blank" >EH22_008/0004635: AdAgriF - Advanced methods of greenhouse gases emission reduction and sequestration in agriculture and forest landscape for climate change mitigation</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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