2015考研英语阅读喜马拉雅山受到污染_大学英语阅读

2015考研英语阅读喜马拉雅山受到污染

　　自从2006年开始Dr Marinoni和他的同事就在调查研究喜马拉雅山上的烟灰。在那年，尼泊尔气象天文台金字塔在孔布山谷开始专职研究浮质粒子中的烟灰。研究的初始目的是利用地处这片高纬度地区的原始地貌来测量大气中特殊的背景环境。然而他们惊讶的发现了一片充斥着烟尘的厚厚阴霾，笼罩着山坡。一月至五月是少雨的前季风时期，孔布山谷平均每五天中就有一天笼罩在厚厚的棕色烟云下。

　　By analysing atmospheric circulation patterns, Dr Marinoni and her colleagues found thatwinds could bring soot and dust from as far away as Europe, the Middle East and NorthAfrica. And if that were not bad enough, the Himalayan valleys act as chimneys, pumpingpollutants from the Indian plains to the mountain peaks. Dr Marinoni estimates that thecombined effect of this crud could reduce the glaciers ability to reflect light by 2-5% andincrease the amount of melting by 12-34%.

　　通过分析大气循环类型，Dr Marinoni和他的同事发现风力可以把烟灰和尘土从远至欧洲，中东和北非等地带到喜马拉雅山上。如果这还不够糟糕的话，喜马拉雅山谷就犹如烟囱一样，把印度平原的污染物排放到喜马拉雅山峰。Dr Marinoni估计这种杂质的共同作用能使冰川的反光能力降低2-5%，融化范围增加1234%。

　　Those suggestions are corroborated by a study led by Xu Baiqing of the Chinese Academy ofSciences Institute of Tibetan Plateau Research, in Beijing. His team drilled cores from the iceof five Tibetan glaciers in order to examine the past few decades worth of pollution. Thesecores show that the level of pollution, especially soot, in Himalayan glaciers correlates withemissions in Europe and South Asia.