The five-hour precipitation in new york is about 50 thousand, so it is urgent to protect the swimming pool plants

New york was angry, especially with China and new york. In recent days, new york has suffered from heavy rains and floods. So far, this rainstorm has caused more than 40 deaths. People in China pay attention to this rainstorm in the United States, mainly because Zhengzhou, China has just experienced a similar disaster. While paying attention to the rainstorm in new york, I hope it will pass quickly, and at the same time, it will inevitably be compared with the rainstorm in Zhengzhou.

The geographical location and climate of the United States

The United States is adjacent to the Atlantic Ocean in the east, the Pacific Ocean in the west and the Gulf of Mexico in the south, so a large amount of water vapor will flow to the continental United States from east, west and south. In addition, the United States is located in the mid-latitude zone of North America and is affected by subtropical high and continental low in summer. This is because the Hawaiian high is sometimes cut off by the continental thermal depression, which is called the western subtropical high in the Pacific Ocean and the azores high in the Atlantic Ocean. Therefore, warm and humid air from the Atlantic Ocean, the Pacific Ocean and the Gulf of Mexico will be continuously transported to the continental United States, and thunderstorm clouds will accumulate more and more, which is the key to hurricanes. The rainstorm in America was caused by Hurricane Ida. On August 29th, Hurricane Ida made landfall in the Gulf of Mexico and moved northeast. Ida is one of the strongest hurricanes in the United States, with a wind speed of 24 1 km per hour, just one step away from the highest level. It is no coincidence that AIDA is rapidly strengthening in the Gulf of Mexico. Warm sea water is a key factor in the formation and strengthening of hurricanes. The temperature in the Gulf of Mexico this year is higher than in previous years, which is why Aida is so destructive.

Hurricane Ida

According to American media reports, during the heavy rainfall in the United States, within five hours, the rainfall in five administrative districts of new york City exceeded 7 inches, about 18 cm, equivalent to 35 billion gallons of water falling from the air. Meteorologist PedramJawahri estimated that the water volume of about 50,000 swimming pools on the scale of the Olympic Games belongs to the "500-year flood". Because of the heavy precipitation, some netizens even suggested using the West Lake in China as the measurement of "unit". Looking back at the heavy rain in Zhengzhou in July, the daily precipitation in Zhengzhou was 552.5mm from 20: 00 on July 19 to 20: 00 on July 20, of which 20 1.9mm was recorded within one hour from July 20 17. Comparing the data, it only rained 180mm in five hours in the United States, and the rainfall in Zhengzhou exceeded that in new york in five hours. Compare it. At that time, in order to let ordinary people know more about the severity of the rainstorm in Zhengzhou, people measured the rainstorm in Zhengzhou with the West Lake as the unit. According to the simple conversion of public data, Zhengzhou covers an area of 7,446 square kilometers, and there are 7,446 x 0.2x10,000,000 = 65.438+0.49 billion cubic meters of water falling in Zhengzhou this hour. The storage capacity of Hangzhou West Lake is nearly 6.5438+0.4 million cubic meters, equivalent to the storage capacity of Hangzhou West Lake of 654.38+0.06. In other words, in this hour alone, more than 100 of the West Lake water flooded into Zhengzhou. This is only an hour on the 20th, and in the past 24 hours, the rainfall in Zhengzhou has reached 546 mm, which shows how heavy the rainstorm is in Zhengzhou.

Comparison between American rainstorm and Zhengzhou rainstorm

The standard Olympic swimming pool is a rectangle of 50*25m, and the required water depth is 1.8m. According to the minimum water depth1.8m, 50 * 25 * 1.8 = 2250m3 water, 1t water = 1m3, and. So the rainstorm in the United States dropped in an hour11250/1400 = 7.87 West Lake. Compared with Zhengzhou Hour 106 West Lake, the rainfall is obvious. From 0 10 to 10, the rainstorm in new york has caused more than 45 deaths, and the same tragedy has also been staged in new york. Streets become rivers, subways flow backwards, railway stations and airports are closed, houses collapse, roads are washed away, people are asked to stay indoors, and their lives and work are affected to varying degrees. However, after another wave of unrest, tropical storm "Larry" quickly approached the United States.

The rainstorm in new york made people look back at the rainstorm in Zhengzhou again, and many people apologized for it. At that time, many people questioned Zhengzhou's drainage system and did not take defensive measures. There are also some reasons. The United States, which has always been famous for its high-tech development, is still a metropolis like new york, and even such a rainstorm can't compare with it. It is conceivable that Zhengzhou at that time was really powerless in the face of disaster.

Conversion from Rainfall in new york to West Lake Water

202 1 is defined as the year of global "meteorological disasters". Actually, it's not an exaggeration. Tornadoes, high temperatures, heavy rains, floods, mudslides, human beings have no power to fight back in the face of natural disasters. Every time a disaster happens, people sigh that it is the revenge of nature and call on people to protect the environment and the earth. However, after the disaster caused by extreme weather, people always seem to "heal the scars and forget the pain" and still greedily suck Mother Earth. Carbon emissions are increasing, and the deforestation of the Amazon rainforest has not been curbed. I just hope that human beings can really wake up. After all, protecting the earth means protecting human beings themselves!