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  Global heat uptake by inland waters

Vanderkelen, I., Lipzig, N. P. M., Lawrence, D. M., Droppers, B., Golub, M., Gosling, S. N., Janssen, A. B. G., Marcé, R., Müller Schmied, H., Perroud, M., Pierson, D., Pokhrel, Y., Satoh, Y., Schewe, J., Seneviratne, S. I., Stepanenko, V. M., Tan, Z., Woolway, R. I., Thiery, W. (2020): Global heat uptake by inland waters. - Geophysical Research Letters, 47, 12, e2020GL087867.
https://doi.org/10.1029/2020GL087867

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Vanderkelen, I.1, Author
Lipzig, N. P. M.1, Author
Lawrence, D. M.1, Author
Droppers, B.1, Author
Golub, M.1, Author
Gosling, S. N.1, Author
Janssen, A. B. G.1, Author
Marcé, R.1, Author
Müller Schmied, H.1, Author
Perroud, M.1, Author
Pierson, D.1, Author
Pokhrel, Y.1, Author
Satoh, Y.1, Author
Schewe, Jacob2, Author              
Seneviratne, S. I.1, Author
Stepanenko, V. M.1, Author
Tan, Z.1, Author
Woolway, R. I.1, Author
Thiery, W.1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Potsdam Institute for Climate Impact Research, ou_persistent13              

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 Abstract: Heat uptake is a key variable for understanding the Earth system response to greenhouse gas forcing. Despite the importance of this heat budget, heat uptake by inland waters has so far not been quantified. Here we use a unique combination of global‐scale lake models, global hydrological models and Earth system models to quantify global heat uptake by natural lakes, reservoirs, and rivers. The total net heat uptake by inland waters amounts to 2.6 ± 3.2 ×1020 J over the period 1900–2020, corresponding to 3.6% of the energy stored on land. The overall uptake is dominated by natural lakes (111.7%), followed by reservoir warming (2.3%). Rivers contribute negatively (‐14%) due to a decreasing water volume. The thermal energy of water stored in artificial reservoirs exceeds inland water heat uptake by a factor ∼10.4. This first quantification underlines that the heat uptake by inland waters is relatively small, but non‐negligible.

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 Dates: 2020-06-152020
 Publication Status: Finally published
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 Rev. Type: Peer
 Identifiers: DOI: 10.1029/2020GL087867
PIKDOMAIN: RD3 - Transformation Pathways
MDB-ID: No data to archive
Organisational keyword: RD3 - Transformation Pathways
Working Group: Impacts of Climate Change on Human Population Dynamics
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Title: Geophysical Research Letters
Source Genre: Journal, SCI, Scopus, p3
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Pages: - Volume / Issue: 47 (12) Sequence Number: e2020GL087867 Start / End Page: - Identifier: CoNE: https://publications.pik-potsdam.de/cone/journals/resource/journals182
Publisher: American Geophysical Union (AGU)