<abstract xmlns="http://www.w3.org/1999/xhtml"><p> The study describes the trends of monthly mean water temperature (from May to October) and the annual maximum water temperature of the rivers in Latvia during the time period from 1945 to 2000. The results demonstrated that the mean water temperatures during the monitoring period from May to October were higher in the largest rivers (from 13.6 °C to 16.1 °C) compared to those in the smallest rivers (from 11.5 °C to 15.7 °C). Similar patterns were seen for the maximum water temperature: in large rivers from 22.9 °C to 25.7 °C, and in small rivers from 20.8 °C to 25.8 °C. Generally, lower water temperatures occurred in rivers with a high groundwater inflow rate, for example, in rivers of the Gauja basin, in particular, in the Amata River. Mann-Kendall test results demonstrated that during the monitoring period from May to October, mean water temperatures had a positive trend. However, the annual maximum temperature had a negative trend. </p></abstract>

The study describes the trends of monthly mean water temperature (from May to October) and the annual maximum water temperature of the rivers in Latvia during the time period from 1945 to 2000. The results demonstrated that the mean water temperatures during the monitoring period from May to October were higher in the largest rivers (from 13.6 °C to 16.1 °C) compared to those in the smallest rivers (from 11.5 °C to 15.7 °C). Similar patterns were seen for the maximum water temperature: in large rivers from 22.9 °C to 25.7 °C, and in small rivers from 20.8 °C to 25.8 °C. Generally, lower water temperatures occurred in rivers with a high groundwater inflow rate, for example, in rivers of the Gauja basin, in particular, in the Amata River. Mann-Kendall test results demonstrated that during the monitoring period from May to October, mean water temperatures had a positive trend. However, the annual maximum temperature had a negative trend.

Long-term changes in the water temperature of rivers in Latvia

Faculty of Geography and Earth Sciences, University of Latvia, Raiņa bulv. 19, Rīga LV-1586, LATVIA

Latvian Environment, Geology, and Meteorology Centre, Maskavas iela 165, Rīga LV-1019, LATVIA

Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences.

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

{"article-title":"Long-term changes in the water temperature of rivers in Latvia"}

The study describes the trends of monthly mean water temperature (from May to October) and the annual maximum water temperature of the rivers in Latvia during...

Long-term changes in the water temperature of rivers in Latvia

Published Online: Jun 15, 2016

Page range: 78 - 87

Received: Nov 30, 2014

DOI: https://doi.org/10.1515/prolas-2016-0013

Keywords
water temperature, long-term changes, river, Latvia

© by Inese Latkovska

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Long-term changes in the water temperature of rivers in Latvia

Published Online: Jun 15, 2016

Page range: 78 - 87

Received: Nov 30, 2014

DOI: https://doi.org/10.1515/prolas-2016-0013

Keywordswater temperature, long-term changes, river, Latvia

© by Inese Latkovska

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Keywords
water temperature, long-term changes, river, Latvia