Greece was hit by a hailstorm half a meter deep. It was hot last year and hail this year. What happened to the earth?

According to the report of European Network on June 19, on the evening of June 16, Drama in northern Greece was hit by severe hail. In a very short time, the urban roads were covered with ice hockey, and the deepest part was 40 cm thick, so the local municipal authorities had to use excavators to deal with them!

Bulldozers remove hail.

After the hail lasted for half an hour, it was followed by a heavy rain, which directly turned the street into a river, and many low-lying buildings were seriously flooded! However, the bad weather is still not over. Starting from Wednesday, the National Astronomical Observatory of Athens has issued warnings one after another, paying close attention to the possible local rainstorm, hail and thunderstorm in central and northern Greece!

Why does the paradise-like Mediterranean climate encounter extreme weather one after another?

Greece is located in the south of Europe, from the southernmost tip of the European continent into the Mediterranean Sea. There is the most suitable weather in the world: the Mediterranean climate, which is a kind of aristocratic weather unique to the west-facing area of the westerly belt mainland. Winter is warm and humid, and summer is dry and cool. All areas with this weather are eager for holiday resorts!

Greece's position on the Mediterranean coast

There are two westerly belts on the earth, which are located in the northern hemisphere and the southern hemisphere, so the Mediterranean climate is actually not limited to the Mediterranean coast, such as South Africa, Australia and Chile in the southern hemisphere. There is no doubt that these are one of the holiday destinations, mainly because the typical climate area along the Mediterranean coast is relatively large, so it is named after the Mediterranean climate!

How did the hail come from? Is there no hail in Mediterranean climate?

Hail is a common meteorological disaster. The principle of hail formation is actually the same as rain and snow. The only difference is temperature difference and strong convection. Generally, the temperature at the bottom of cumulonimbus clouds is relatively high, above 0℃, while the temperature at the upper air is very low, mostly below -20℃. Under the action of updraft, ice crystals or supercooled water droplets formed at high altitude will fall down to form snow or rain!

The principle of hail production

In summer, when the ground is hot and the updraft is strong, supercooled water droplets or ice crystals falling to the bottom of the cloud will be pushed up repeatedly until the updraft below can no longer hold such a large ice hockey. At this time, these ice hockey balls will fall to form hail, so it is necessary to repeat strong convection to form heavy hail. The stronger this convective weather is, the greater the hail will be!

Although the Mediterranean climate is very comfortable, this local strong convective weather cannot be ruled out. As mentioned above, as long as there are cumulonimbus clouds formed by abundant water vapor and strong updraft formed by high temperature, and the wind direction is suitable, it may constitute strong convective weather! Hail generally occurs in mid-latitude inland areas, less in equatorial and polar regions, less in marine areas, and less in mountainous areas and plains, mainly because the mountainous terrain is complex, the heating difference is great, and the air moves vertically, which makes it easier to form hail!

Meteorological Data Map of Greece (Rainfall) for that Day

Lightning forecast of the day in Greece

Mexico suffers from severe hail disaster.

20 19 On June 30th, a rare hail disaster occurred in Guadalajara, Jalisco, Mexico. In the weather as high as 3 1 celsius, the whole city is almost submerged by hail, and the hail thickness in many areas reaches1.8-2m!

After the hail, the city's temperature quickly dropped to 15 degrees Celsius! From summer to late autumn, of course, there are two reasons. One is that the large coverage of hail increases the reflectivity, and the other is that melting absorbs a lot of heat!

Why are there so many extreme weather? What happened to the earth?

I remember the same period last year, the high temperature in Europe should make everyone remember it! In Europe, a rich and cool continent, every household doesn't like to install cool air conditioners. Some environmentalists think that air conditioners consume too much electricity. This kind of consciousness is really good! However, the two high temperatures from June 2065438 to the end of July 2009 directly made Europeans comfortable to get used to the lazy climate in the Mediterranean!

European high temperature distribution table in June

European high temperature distribution table in July

Temperature distribution map of Europe on July 25th.

More interestingly, air conditioners in Europe are not expensive, but the cost of installing air conditioners is 2-3 times that of buying air conditioners, which makes everyone very depressed, but your price is better than that of the dead, so Europeans have to install air conditioners honestly in hot weather.

According to the data released by the World Meteorological Organization, since the industrial revolution, the average temperature of the earth has increased by nearly 1. 15 degrees Celsius. Although it seems to be a very low data, the eruption of the Tambora volcano in 1860 has lowered the earth by about 1 degree Celsius, and there is no summer weather in many places on the earth. We don't have a direct reference case of temperature rise, because we are experiencing it ourselves.

The rising temperature will increase the evaporation of water vapor and form stronger convective weather, so there may be more floods in the central part of the mainland and snowstorms in winter. Therefore, global warming is not only drought, but also unexpected extreme weather, so today, with the increasing human activities, we will face more extreme weather such as drought, cold, high temperature, typhoon and hail! They will eventually affect the future of mankind, so it is imperative to control global warming!