Interacting impacts of hydrological changes and air temperature warming on lake temperatures highlight the potential for adaptive management

Olsson, Freya ORCID: https://orcid.org/0000-0002-0483-4489; Mackay, Eleanor B. ORCID: https://orcid.org/0000-0001-5697-7062; Spears, Bryan M. ORCID: https://orcid.org/0000-0002-0876-0405; Barker, Philip; Jones, Ian D.. 2024 Interacting impacts of hydrological changes and air temperature warming on lake temperatures highlight the potential for adaptive management. Ambio. 10.1007/s13280-024-02015-6

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Abstract/Summary

Globally, climate warming is increasing air temperatures and changing river flows, but few studies have explicitly considered the consequences for lake temperatures of these dual effects, or the potential to manage lake inflows to mitigate climate warming impacts. Using a one-dimensional model, we tested the sensitivity of lake temperatures to the separate and interacting effects of changes in air temperature and inflow on a small, short-residence time (annual average ≈ 20 days), temperate lake. Reducing inflow by 70% increased summer lake surface temperatures 1.0–1.2 °C and water column stability by 11–19%, equivalent to the effect of 1.2 °C air temperature warming. Conversely, similar increases in inflow could result in lake summer cooling, sufficient to mitigate 0.75 °C air temperature rise, increasing to more than 1.1 °C if inflow temperature does not rise. We discuss how altering lake inflow volume and temperature could be added to the suite of adaptation measures for lakes.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	10.1007/s13280-024-02015-6
UKCEH and CEH Sections/Science Areas:	Water Resources (Science Area 2017-)
ISSN:	0044-7447
Additional Information. Not used in RCUK Gateway to Research.:	Open Access paper - full text available via Official URL link.
Additional Keywords:	climate change, climate mitigation, GOTM, lake hydrodynamic modelling, lake temperatures, river flow
NORA Subject Terms:	Ecology and Environment Hydrology
Related URLs:	Dataset Dataset Dataset Dataset
Date made live:	04 Jun 2024 15:06 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/537512

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