Abstract
While working on practical problems related to the spread of thermal pollution in rivers, we face difficulties related to the collection of necessary data. However, we would like to predict the increase in water temperature at the best accuracy to forecast possible threats to the environment. What level of accuracy is necessary and which processes that influence the water temperature change have to be taken into account are usually problematic. Those problems, with special stress on water–air heat exchange in practical applications in the so-called mid-field region in rivers, which is very important for the environmental impact assessment, constitute the main subject of the present article. The article also summarises the existing knowledge and practice on water–air heat exchange calculations in practical applications.
Highlights
IntroductionThermal pollution is understood as a result of any process that changes ambient water temperature
In the aquatic environment, thermal pollution is understood as a result of any process that changes ambient water temperature
Reflection—upon reaching the water surface, a part of the solar radiation is reflected by the surface;
Summary
Thermal pollution is understood as a result of any process that changes ambient water temperature. To illustrate the calculations of the net heat flux at the water–air interface and to discuss the possible problems that may be encountered in practical applications, the measured water temperatures in two different lowland rivers in Poland, namely Narew and Świder (see Fig. 3) having different characteristics (see Table 2), were used. Both river sections are of similar width, Świder River is significantly shallower. The sensitivity analyses for different input meteorological parameters may be found in Kalinowska et al (2018)
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
