I. the situation of the weather, hydrology from the beginning of the rainy season, storms, flood to the end of September 2013
1.1. Meteorology
-storm and tropical depression (ATNĐ):
hurricane season 2013 appeared on the East Coast earlier than average years (TBNN), January and March 2013 Typhoon appeared and the ATNĐ on the East Coast. Up to this point had 4 ATNĐ and 10 active storms on the East coast which directly affects Vietnam's 5 bouts. In addition, in early July, 2013, Typhoon No. 3 landed in the Southern Province of Guangxi (China) and indirectly caused a moderate to heavy rainfall, with precipitation in big places in the North of Thanh Hoa, Nghe An and the North. Most noteworthy is the storm of 10 landings in Ha Tinh Quang Tri-sector is the storm impacted directly to Central was the strongest rate since 2006 and do great harm to persons and property.
-The hot sun:
hot sun appear in accordance with the law every year, from April till now all over the country have occurred 12 heatwave (less than 6 year 2012 phase), the concentration of heat in the northern provinces and Central. Most of the heatwave did not last long, common time from 2-4 days; the most notable was the heatwave mid May of 2013 (from July 14-20 in the North and from 14-23/5 in the Middle), the highest temperature in the popular place from 37-39oC, some parts of the Northern Plains and North Central on 40oC. Private parts of the Northern Plains reached the highest value in the chain of historical figures of the era from 1960 to the present.
-Air conditioning (KKL):
in May and November 2013, also several waves of weak low pressure track compression KKL should have caused the rain, scattered rain to places both in the North and North Central. Especially the average intensity KKL wave happened on 10/6 have affected coastal provinces as Central causes precipitation, rainy, rainy places have to come very loud and widespread thunderstorms in the northern region. to the beginning of September, KKL has started operations and impact to weather the country's northern provinces; last September, a fairly strong KKL has affected the Northern cause widespread heavy rain and as the background temperature at the northern provinces plummeted, temperatures.
-temperature: temperature Background
from June to now covering the whole country are commonplace at approximately TBNN. Private 5/2013 due to heatwave stretching should cause the temperatures in the North and Central TBNN more popular period.
-precipitation situation:
overall, the rainy season in the North as well as in the Central Highlands and southern came earlier than usual (the first days of may, 2013). To the end of September, 2013 all around the Kingdom happened 19 rain to full scale. The rainfall concentrated in the North and North Central. Of the wrong standard October 5 rainfall (from May to September, 2013) all around the greater popularity of from 200 to 500 mm, some places in Eastern Tonkin later from 600 to over 700mm. Private Southern areas of uneven distribution of rainfall, at approximately TBNN.
1.2. Hydrology
-in the North:
from 24 to 30 may 2013, flood Xiaoman (later than TBNN about 2-3 days) occurred on the waterfront in the North with the magnitude of flooding up from 1.5 to 7 meters and the flood peak in popularity less than TBNN, the flood on the River upstream from the Bridge over TBNN.
In the June 6 and 7 in the upper happened 3-4 small flood wave with amplitude flood up to 1-5 m; downstream water levels fluctuate according to tides and regulating of the reservoir.
From late July to the end of August, in the upper happened 2-3 large and medium flood wave with amplitude flood up 3-6 m due to the effects of rain storms of 5 and 6. Outdoor Painting La had to open the drain door 1, outdoor Peace-2 drain outlet; Tuyen Quang Ho-2 drain outlet; She Falls Lake-outlet 2. The water level at the River, the River Bridge at DAP CAU, River Trader in Seat of lang Trade has reached or exceeded the alarm 3.
for 10 days in early September was going bunch round 1 in the North, in that on the big black river flood occurred with traffic to Lake son La 12000m3/s (11 h 5/9); Son La and Hoa Binh Lake had to open 2 drain door in 30 hours. During this flood water level in the River at the bridge at River, A Bridge, the River Trade in the Seat of lang and trade are all exceedingly alarming 2.
The total amount of water, the flood season (may through September) on the waterfront in the North still common deficiencies compared to TBNN: the River at Yen Bai:-16% of the Lot River, at Tuyen Quang:-16%, da son La to Lake:-9%, to peace:-6%, in the lower Red River in Hanoi is under TBNN-22%. The water level of the hydro in the North are now at a high level or near the water level surges and higher than the same period in 2012. 4 indoor capacity greater than 103 million m3 in comparison with design (24,425 billion m3) and 1.371 billion m3 greater than the same period last year; useful capacity of 4 outdoor currently is 16.616 billion m3. The water level of the Lake is the main irrigation in the North there are 13/16 Lake was near or exceed the design; 7/16 lakes are flush to overflowing; only 3/16 h and below the designed 12-28%.
-Central Highlands and Southern Highlands and Central-
8 in July, on the waterfront in Central and Highland areas appear small, the flood peak flood wave 6 on the main river are under BĐ1, the amount of the flow on the river lacking from 15-50%, with 60% more shortfalls place.
from 17-29/9, due to the influence of the typhoon number 8 and strip the tropical convergence through the central part, the whole region from Nghe An province to Quang Ngai province and the highland area had occurred extensive heavy rain caused flood waves 3 consecutive vertices on the Hue River bastards., Quang Nam, Quang Ngai province at BĐ1-BĐ2, the flood crest on the River in Nghe An province to Quang Tri, Kon Tum to BĐ2 and on BĐ2, the Summit own Vu Gia in Panaji (Quang Nam): 9, 16 m (5/19), on the BĐ3: 0, 16 m; on the Srêpok River at ban Don: 175, 65m (11 h/28), on the BĐ3: 0, 65m.
to the end of September, flow, over most of the rivers in the Central Highlands region and higher TBNN from 19 to 63%, own the River in Thanh Hoa, Quang Tri, Quang Ngai, Hue T.T. lower than from 12-33%. The water level of the hydroelectric Lake in the Central Highlands region, and both reached the water level surges normal, Hinh River hydro own (People) is lower than the MNDBT of about 8 m. The big irrigation pond in Nghệ An is full and overflow discharge, irrigation lakes in Thanh Hoa, Ha Tinh Province reached: 60-85% of design capacity, the Lake in The Middle reaches: 45-65%, lakes in South-Central reaches 30-60%, the Lake in the Central Highlands and southern reaches from 80-95%, some lakes are discharge of overflow.
South:
From June to mid-September, the water level in the Mekong River watershed is always lower than TBNN from 0.2-0.4 m. From 20/9, due to flooding upstream of the combination with the tide the water level in the Mekong River watershed up fast with capacity of 8-10 cm per day. The water level on the morning of March 9, the Money in the new Europe: 4, 12 m, on the BĐ2: 0, 12 m, on the Hau River in Chau doc: 3.36, under BĐ2: 0, 14 m, at the equivalent of TBNN.
2 appears on Dong Nai River waves of high flood peak, little flood for Ta Lai: 112, 75 m (3/8), on the BĐ1: 0, 25 m.
II. Review the trend forecast, spring and winter hydrology of 2013-2014
2.1. Meteorology
a) storm and tropical depression (ATNĐ):
From now until the end of 2013 and in 2014 the months are also active ATNĐ and storms on the East Coast and has the ability to directly influence our country around 1-2 cyclone and concentrated in Central and southern Vietnam.
b) temperature: medium temperature Background
the winter months spring 2013-2014 in the North a little higher popularity compared to TBNN; other areas at a level roughly with the TBNN period.
Spells the first bold (on average temperature in the province and the Northern Plains down below 15oC, last from 3 days or more) of the winter-spring 2013-2014 is likely to happen in early January, 2014 and later than TBNN (25/12) and the equivalent of winter-spring of 2012-2013 (beginning on December 30, 2012). The dark spells in the northern region is likely to focus on July 1 and 2, 2014.
In the winter-spring of 2013-2014 in the northern provinces alternating between periods of warmer than normal is some dark spells, frosts. Most of the spells in bold, medium-term harm lasts from 3 to 5 days, but also protect installments have lasted over.
c) precipitation is:
-In the North, the rainfall in the winter-spring 2013-2014 in the estimate or slightly less than TBNN.
-Central in October 2013 North at approximately TBNN, the southern lower than TBNN period. To the beginning and middle of the winter-spring season (from November to March 2013/2014) popular in the slightly less than TBNN. The last month of the season at roughly the same period. TBNN
-male system earlier this season and between popular season at slightly less than TBNN last season, likely at a level of approximately TBNN.
2.2. References
a) full-flow:
Northern winter spring 2013-2014 in the lower Red River and the Thai Binh River is likely smaller than the TBNN about 10-20%, in the upper level TBNN about 10-30%, of which the last month of the shallow season (March – May 4, 2014) shortfall of about 10-20%.
On the Red River in Hanoi, the average dry season flow (10/2013-2014/4) at the rate of 800-1000 m 3/s (TBNN
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