( ( Thermal ( infrared ( remote sensing ) ) ) ( ( is ( used ( for ( ( water ( surface temperatures ) ) mapping ) ) ) ) . ) )
(ROOT (S (NP (JJ Thermal) (JJ infrared) (JJ remote) (NNS sensing)) (VP (VBZ is) (VP (VBN used) (PP (IN for) (NP (NP (NN water) (NN surface) (NNS temperatures)) (VP (VBG mapping)))))) (. .)))
Thermal infrared remote sensing is used for water surface temperatures mapping.
(ROOT (S (SBAR (WHADVP (WRB When)) (S (NP (NP (DT the) (NN temperature)) (PP (IN of) (NP (NN water)))) (VP (VBZ is) (VP (VBN increased) (PP (IN after) (S (VP (VBG being) (VP (VBN used) (PP (IN in) (S (VP (VBG cooling)))))))))))) (, ,) (NP (PRP it)) (VP (VBZ is) (NP (JJ thermal) (NN pollution))) (. .)))
When the temperature of water is increased after being used in cooling, it is thermal pollution.