AbleTo give reasons the different in registering rain
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Answer:
rains are registering and made by clouds when they do friction
Answer:
On the morning of September 12th, the gauge was so full and heavy, with over seven inches of rain, that I decided to stick a yardstick in the gauge to measure the rain amount, and save pouring into the inner tube for the end of the storm. The gauge tilts slightly, so I took a measurement on the uptilt side and the downtilt side and took an average. That evening I found that the bottom of the gauge sagged in the middle, leading to an even deeper measurement than the downtilt side. With these flaws, the lack of the ten-to-one exaggeration of depth, and some measurements being taken in the dark with a flashlight, my data were only approximate. I recorded measurements to within the nearest quarter inch (see the graph below).
Were my measurements accurate? On Friday morning, September 13, I took measurement using a more accurate method to compare with my estimates. After bailing out five full tubes of rain, I poured the remaining water through the funnel into the tube to a depth of 13.5 inches, spilling a little bit during this process. The result was 0.38 inches more than my rough estimate from the night before - a storm total of 14.52 inches up to this time. On the graph, this is marked as 1. (The lower shows the uncorrected values.)
But the rain hadn’t stopped. I awoke on the morning of September 15th and heard reports that up to 2 inches of rain fell overnight. I went outside to check our gauge – only to see that it had been knocked over (probably by raccoons). Fortunately, I have a second rain gauge in my backyard – a plastic gauge that registered about 0.25 inches. I added a conservative 0.2 inches, since this gauge was under trees (marked as 2 on the graph).
The final number: 16.37 inches on rain, more or less.
Why do I add “more or less”? Because there is uncertainty in the measurements. The metal gauge had been in the same place for several years, but I have moved it in the past year away from a growing tree. I noticed on September 13 that the tree had intruded again: the end of one branch was about 10-15 feet over the gauge, or slightly to the east. Runoff from this branch could have added to the total before I moved the gauge four feet to the west for the last two measurements. It is also possible that the 0.98 inches could be high, but I doubt it: I had briefly run a sprinkler hose at a low setting, but I had moved the gauge out of the way and I turned the water off immediately once the rain started. Switching the rain gauges adds uncertainty and so does the previously-mentioned spillage when I poured the remaining water in the gauge into the tube. Also, because my rain gauge was open at the top, some of the water could have evaporated, although evaporation was probably minimal, given the high relative humidity