Note that this covers about two-thirds of the surface of the planet. The coverage of the mission only extends from 40°N to 40°S. Movie loop of the monthly averages of the tropical rainfall, Dec 1997 – Mar 2015. To begin the temporal investigation, Figure 1 shows the month-by-month variations in the average rainfall.įigure 1. For this post, instead of averages over time I’ve looked at the changes in rainfall amounts over time. In that post, I looked at averages over the period of record. This regulation keeps the temperature within a very narrow range (e.g. This is another piece of evidence for my hypothesis that the global temperature is regulated by emergent phenomena, including tropical thunderstorms. There I showed that the cooling from thunderstorm-driven evaporation is a major heat-regulating mechanism in the tropics. I discussed my first look at this rainfall data in a post called Cooling and Warming, Clouds and Thunderstorms. I’ve been looking again into the satellite rainfall measurements from the Tropical Rainfall Measurement Mission (TRMM).
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