info:eu-repo/semantics/article
The extent and variability of storm‐induced temperature changes in lakes measured with long‐term and high‐frequency data
Fecha
2021-04Registro en:
Doubek, Jonathan P.; Anneville, Orlane; Dur, Gaël; Lewandowska, Aleksandra M.; Patil, Vijay P.; et al.; The extent and variability of storm‐induced temperature changes in lakes measured with long‐term and high‐frequency data; American Society of Limnology and Oceanography; Limnology and Oceanography; 9999; 4-2021; 1-14
0024-3590
CONICET Digital
CONICET
Autor
Doubek, Jonathan P.
Anneville, Orlane
Dur, Gaël
Lewandowska, Aleksandra M.
Patil, Vijay P.
Rusak, James A.
Salmaso, Nico
Torsten Seltmann, Christian
Straile, Dietmar
Urrutia Cordero, Pablo
Venail, Patrick
Adrian, Rita
Alfonso, María Belén
DeGasperi, Curtis L.
Eyto, Elvira
Feuchtmayr, Heidrun
Gaiser, Evelyn E.
Girdner, Scott F.
Graham, Jennifer L.
Grossart, Hans-peter
Hejzlar, Josef
Jacquet, Stéphan
Kirillin, Georgiy
Llames, Maria Eugenia del Rosario
Matsuzaki, Shin Ichiro S.
Nodine, Emily R.
Piccolo, Maria Cintia
Pierson, Don C.
Rimmer, Alon
Rudstam, Lars G.
Sadro, Steven
Swain, Hilary M.
Thackeray, Stephen J.
Thiery, Wim
Verburg, Piet
Zohary, Tamar
Stockwell, Jason D.
Resumen
The intensity and frequency of storms are projected to increase in many regions of the world because of climate change. Storms can alter environmental conditions in many ecosystems. In lakes and reservoirs, storms can reduce epilimnetic temperatures from wind-induced mixing with colder hypolimnetic waters, direct precipitation to the lake?s surface, and watershed runoff. We analyzed 18 long-term and high-frequency lake datasets from 11 countries to assess the magnitude of wind- vs. rainstorm-induced changes in epilimnetic temperature. We found small day-to-day epilimnetic temperature decreases in response to strong wind and heavy rain duringstratified conditions. Day-to-day epilimnetic temperature decreased, on average, by 0.28C during the strongest windstorms (storm mean daily wind speed among lakes: 6.7 2.7 m s−1, 1 SD) and by 0.15C after the heaviest rainstorms (storm mean daily rainfall: 21.3 9.0 mm). The largest decreases in epilimnetic temperature were observed ≥2 d after sustained strong wind or heavy rain (top 5th percentile of wind and rain events for each lake) in shallow and medium-depth lakes. The smallest decreases occurred in deep lakes. Epilimnetic temperature change from windstorms, but not rainstorms, was negatively correlated with maximum lake depth. However, even the largest storm-induced mean epilimnetic temperature decreases were typically <2C. Day-to-day temperaturechange, in the absence of storms, often exceeded storm-induced temperature changes. Because storm-induced temperature changes to lake surface waters were minimal, changes in other limnological variables (e.g., nutrient concentrations or light) from storms may have larger impacts on biological communities than temperature changes.