The reason for the birth of the first weather forecast in the world is () A. The need of agricultural production B. The need of war C. The need of medical treatment D. The need of navigation.

The first weather map in the world was born because of the Crimean war.

There is no unified observation regulation in early meteorological observation, and the obtained data are not exchanged in real time. According to the specially designated numbers and symbols, the meteorological observation records collected at the same time and in different places are filled into a map and analyzed on the map. This map is called the weather map.

In today's TV weather forecast, a schematic diagram of the ground weather is often given. Through this simplified weather map, the audience can know the position of cold air front, the position of strong wind and rain area and so on. It can be said that the appearance of weather map is of great significance in meteorology. It organically connects the meteorological elements of a place and a place, and expands our horizons from point to surface. Forecasters can learn about the weather situation in a wide range or even around the world through weather maps in a short time, and predict the future changes of the weather through several consecutive weather maps. Before the appearance of numerical weather forecast, weather map has been the main tool for meteorologists to forecast the weather. Today, with the rapid development of numerical forecasting, weather map is still one of the forecasting tools.

1854165438+10, the famous Crimean war in history is going on fiercely. The British and French allied forces surrounded Sevastopol, and the Marines were preparing to land in the Black Sea port of Balaclava. At this time, strong winds and huge waves suddenly blew on the Black Sea. The British and French allied forces collapsed without fighting, and almost all the troops were wiped out.

Le freire, director of the Paris Observatory, was ordered by the military to study the storm. He wrote letters to meteorologists all over the world and collected weather reports before and after the storm. After the report was collected, he filled in the meteorological conditions of different places at the same time on a map in turn and analyzed them one by one. It was found that the storm moved from northwest to southeast, and Spain and France were affected by it 1 ~ 2 days before reaching the Black Sea.

After analysis, Lefler believed that if there were weather stations in Europe at that time, storm information could be telegraphed to the British and French fleets in time, and storm attacks could be avoided. 1855 In March, he suggested to the French Academy of Sciences to organize an observation network to collect observation data quickly, analyze and draw weather maps in one place.

Le's suggestion has been echoed by many countries. 1856, France established the first formal meteorological service system. Some other countries in Europe, as well as the United States and Japan, have also organized observation networks, started to photograph the meteorological observation results of the day, draw weather maps, and carry out weather forecasting services. Weather chart is the beginning of modern weather forecast, which makes the weather forecast from point to surface, making people leap from "looking at the sky from a well" to "looking at the world"