Temperature change - local

Events or activities increasing or decreasing local water temperature. This is most likely from thermal discharges, e.g. the release of cooling waters from power stations.  This pressure only applies within the thermal plume generated by the pressure source.

Benchmark: 
A 5°C change in temperature for a one month period, or 2°C for one year.
Examples: 
From power station cooling water discharge, bioprospecting, retained sewage or other industrial discharges, although low likelihood of being sustained for temporal aspect of benchmark.
Notes: 
Heat from power cables and sealice treatments are excluded as unlikely to be at benchmark. It excludes temperature changes from global warming which will be at a regional scale.

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