Sentence:  Indonesian <WSD>Throughflow</WSD> complicates quantitative estimates of heat transport divergence in the Indian Ocean. Because the <WSD>Throughflow</WSD> entering the Indian Ocean is warm (about 20°C) relative to its temperature as it exits the Indian Ocean across the southern boundary at 32°S, the overall effect of the <WSD>Throughflow</WSD> is to lead to an ocean heat transport convergence over the Indian Ocean. 
Meaning of the word marked with <WSD> tags:  The movement of an identifiably separate body of water through a larger body (such as a current of fresh water through salt water).