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The aberrant behaviour of the Indian monsoon in June 2009

机译:2009年6月印度季风的异常行为

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After an early onset over Kerala on 23 May 2009, further advance of the monsoon over the Indian region was delayed by about two weeks with the monsoon restricted to the west coast and southern peninsula until 24 June (Figure 1 a)1. This resulted in a massive deficit in the all-India rainfall of 54% of the long term average for this period. The deficit in the all-India rainfall for the month of June in 2009 (48%) was close to the lowest recorded rainfall (50% in June 1926) since 1871. This deficit could not be made up in the rest of the season (Figure 1 b) and the deficit in the all-India summer monsoon (June–September) rainfall is 23%1, which is comparable to the most severe droughts in the last 100 years (24% in 1972 and 22% in 2002). The impact of this drought (defined as a season with deficit in the all-India June–September rainfall of more than 10% of the longterm average) has been felt across the entire country, not only by the farmers but also the urban population who felt the pinch in rising prices, and water and power shortages.
机译:在2009年5月23日喀拉拉邦较早爆发之后,季风在印度地区的进一步前进被推迟了约两个星期,季风仅限于西海岸和南部半岛,直到6月24日(图1a)1。这导致整个印度的降雨量严重短缺,这一时期的长期平均水平为54%。 2009年6月全印度降雨量的赤字(48%)接近自1871年以来的最低记录降雨量(1926年6月为50%)。在整个季节的剩余时间内都无法弥补这一赤字(图1b)和全印度夏季季风(6月至9月)的赤字为23%1,与过去100年中最严重的干旱相当(1972年为24%,2002年为22%)。干旱的影响(定义为整个印度6月至9月降雨量不足长期平均水平的10%以上的季节)在全国范围内均受到影响,农民和城市居民感到价格上涨以及水和电短缺的压力。

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