The southern rainstorm this year, why to slant early strong? Typhoon " parrot " can aggravating th

Southern rainstorm comes in this summer " feral " , since June 2020, much ground was experienced strength is the greatest since this year, limits the rainfall process with the widest, the longest duration, the province such as Guangxi, Guangdong, Hunan, Guizhou, Zhejiang pulls noisy flood early-warning in succession.

Run ministry message according to lash-up, up to on June 12, big damage caused by waterlogging is killed already caused 22 provinces (municipality, municipality directly under the Central Government) 5.8 million person-time is stricken be hit by a natural adversity,

Rainstorm did not stop " on north " pace. The flood of and other places of city of Guilin of heavy disaster area, Wu already retire, the pluvial early-warning of Sichuan, Guizhou, Hunan and stricken be hit by a natural adversity message are transmitted in succession.

Presiding forecast Yuan Chentao was accepting central observatory on June 13 when including south to wait for media to be interviewed jointly on the weekend, predict, belt of later period rainfall may return what can have way of north and south to adjust as seasonal change. Prospective a week is controlled, rainfall area will be main in Jiang Han, Jiang Huai this takes an area, continuously 4 arrive 5 days, rainfall compares concentration relatively, this takes and other places of the eastpart part that includes Hubei, Anhui, Jiangsu, bureau ground can have rainstorm to arrive big rainstorm, "May create greater pressure to flood prevention " .

"Flood prevention situation is very grim this year. We should have made the preparation that prevents great flood, preparation that prevents a cataclysm. " the country June 11 does defence of water drought calamity newly to go up about circumstance press conference, defence of calamity of drought of water of irrigation works ministry manages director Tian Yitang says so.

On June 8, the flood passes reach of county of in relief new moon of Li river Guangxi. (Xinhua News Agency / graph)

Normally for, enter 5, after June, area of our country whole south can enter relatively rainy period. Chen Tao introduces, what erupt above all commonly is Hua Na flood season, was June next the middle ten days of a month arrives in July the first ten days of a month, the concentration that Jiang Huai takes area rainfall to Jiang Han period. July before the middle ten days of a month, southern precipitation compares concentration, july in after the last ten-day of a month, rainfall belt can achieve China north, northeast to be taken gradually.

Since June, south encountered the weather of rainstorm, especially big rainstorm more, cause feeling of big damage caused by waterlogging even. Is the rainstorm 2020 not common?

" Changjiang Delta south, China south the south, especially Guangxi north appeared stronger precipitation, precipitation time is longer, slant early, slant strong. " Chen Tao is responded to.

The rainfall this year slants early, slant to basically flow by force with atmosphere annulus adjust change to concern.

Chen Tao is analysed, since this year, the time that monsoon of our country Nanhai erupts slants early. In aerography 5 days are await, normally Nanhai monsoon erupts time was May the 5th await (on May 21 - 25 days) , and this year is the 4th await (on May 16 - 20 days) . After Nanhai monsoon erupts, the transportation of southern region lunt enters a more powerful and prosperous period of time, rainfall concentration.

"Nanhai monsoon is not peculiar this year phenomenon. " typhoon of Chinese atmosphere bureau and center of marine weather forecast are presiding forecast Yuan Zhangling to tell south on the weekend reporter, it can erupt every year. The morning and evening that its erupt and whole atmosphere are circumfluent, marine state closely related. "The sea of the indian ocean is lukewarm this year on the high side, more active also in convection of tropics of boreal the indian ocean, erupt to Nanhai monsoon the contribution with slant to have early certain. Erupt to Nanhai monsoon the contribution with slant to have early certain..

Day after day strong rainfall lets Guangxi be in an emergency, according to local media coverage, the half of Guilin proboscis hill " nose " by adj/LIT wide, yang Shuo is famous the street is rectified on the west street immerse in the flood, li river reservoir group discharge for many times big.

Have central medium the data of the branch such as office of government of lash-up of Guangxi of the cite before this says, from May the bottom comes on June 10, happen in process of weather of 4 of Guangxi strong rainfall, already brought about rainfall of and other places of county of local in relief new moon, Fu Chuan county to break through historical extreme value, big damage caused by waterlogging is killed cause one million two hundred and seventy-seven thousand five hundred person stricken be hit by a natural adversity, immediate pecuniary loss exceeds 8.9 billion yuan of RMBs.

Situation of affection of flood of wide northwest ministry, big damage caused by waterlogging is serious, summary rises, main with rainfall big, time grows, fall the area overlaps these 3 elements are concerned.

Central observatory is presiding forecast Introduction Sun Jun, and other places of Guangxi, Guangdong, Hunan, Jiangxi, Zhejiang, Fujian and all the year round photograph of the corresponding period is compared, rainfall has slanted much 1-2 times, guangxi north slants much 3-4 times. According to atmosphere branch monitor, since June, rainfall of day of the Yang Shuo that already had Guangxi Guilin, Fu Chuan broke through historical extreme value, in addition, site of and other places of the chestnut on Guangdong Buddha ridge, Jiangxi also was broken through in June extreme value.

And continuously the reason with the longer time of rainfall, sun Jun is analysed, it is on one hand concern amply with lunt, after Nanhai monsoon erupts, southwest warm damp sheds in a steady stream to be carried to this one belt ceaselessly, bring about lunt enough; On the other hand, the high temperature of southern region is high wet make atmosphere very flabby calm, not stable energy is released can bring strong rainfall, and in a steady stream carries the warm wet air current that come to also make not stable energy long-standing ceaselessly, rainfall time is accordingly longer.

Guangxi climate center is presiding when forecasting a He Hui to accept China News Service to interview, introduce, in weather of 4 strong rainfall, lull is brief between 2 strong rainfall, the process is frequent, accumulate rainfall big, rainfall falls area height jackknife.

"Fall a characteristic that area jackknife is this rainstorm, be in especially Guangxi north is relatively apparent. " Sun Jun also is analysed, fall the rainfall on area heavy overlay is strong, time is long, cause river river water level to rise, the flood feeling that caused Guangxi north directly develops faster.

After Nanhai monsoon erupts, mean our country to enter period of plum rains of the Huaihe River of Hua Nayu season, river, Hua Beiyu season in succession, "Resemble a starting gun, it is the beginning of summertime rainy season. " Zhang Ling tells south on the weekend reporter.

Notable is, "Starting gun " the influence is not to end at this point. Zhang Ling explains, nanhai monsoon is summer the main lunt when rainfall carries source, because of its existence, also can bring about the typhoon that generates in Nanhai and Philippine periphery " parrot " carry enough steam.

According to central observatory message, this year the 2nd typhoon " parrot " on June 14 in the morning 8:50 around save island of hill of sea of city of in relief river to be landed littoral in Guangdong, near the center when landing the biggest wind-force 9 class, central lowest atmospheric pressure is 990 100 handkerchief. "Parrot " also be first typhoon that lands China this year, the average date that compares in former years shifted to an earlier date half month.

On June 14, island of hill of sea of city of in relief river is visited in Guangdong, ocean wave is flapping sea wall. That day 8 when 50 minutes, typhoon " parrot " land here. (Xinhua News Agency / graph)

Current, typhoon " parrot " the structure had appeared apparent asymmetry, "Appear in the center relative to strong convection on the west side area, ' parrot ' standing by our country, in landing a process, can be in typhonic center on the west side, namely of wide thing south coastal, cause the occurrence of big rainstorm, especially big rainstorm, the mountain torrents that because this should be on guard,bureau ground strong precipitation brings about, mud-rock flow, city accumulates waterlogged happening. " Zhang Ling reminds.

"Parrot " arrival can is large area aggravating the situation of a disaster of disaster area of and other places of the Guangdong before this, Guangxi?

"Also need not worry too. " Zhang Ling explains, although go a month, guangdong north, Guangxi is mid precipitation of and other places slants much, but not be whole area has strong precipitation, early days precipitation slants much area is not the district that this the typhoon creates precipitation to basically happen, in this paragraph of time, the precipitation of island of Guangxi south, wide thing south, Hainan slants apparently little, and all the year round photograph of the corresponding period is compared decreased 3 to 7 into, and appeared longer high temperature weather, relatively on the high side of historical the corresponding period 1 to 4 Celsius, the atmosphere drought that spends again is spent in still appearing.

"Typhoon ' parrot ' brings precipitation district, as it happens covered these areas, the high temperature of these areas, arid to alleviating it is advantageous. " Zhang Ling says.

Southern on the weekend reporter Liu Jia