Sentences with phrase «water chemistry over»
The location and amounts of iron in the rock gave important clues about ancient ocean water chemistries over time.
https://www.sciencedaily.com/ Not exact matches
The study is the first to use long - term continuous water chemistry data to document hydrological changes over an enormous geographic area and a long time span.
So Fu and her colleagues observed water vapor over the Amazon with NASA's Aura satellite, a spacecraft dedicated to studying the chemistry of Earth's atmosphere.
The answer is, our planet's atmosphere and oceans are not that well described by the basic chemistry of a gas over a beaker of water.
«What our study shows is that observed water vapor concentrations are high enough and temperatures are low enough over the U.S. in summertime to initiate the chemistry that is known to lead to ozone losses,» said Harvard atmospheric scientist David Wilmouth, one of the paper's co-authors, in an email.
By counting the number of scales left behind at various levels of the sediment cores, the researchers determined how much sunlight reached the bottom of the pond in a given year, allowing them to estimate the pond's water depth, clarity and chemistry over time.