首页
登录
职称英语
In the atmosphere, carbon dioxide acts rather like a one-way mirror the glas
In the atmosphere, carbon dioxide acts rather like a one-way mirror the glas
游客
2024-06-09
12
管理
问题
In the atmosphere, carbon dioxide acts rather like a one-way mirror the glass in the roof of a greenhouse which allows the sun’s rays to enter but prevents the heat from escaping.
According to a weather expert’s prediction, the atmosphere will be 3℃ warmer in the year 2050 than it is today, if man continues to bum fuels at the present rate. If this warming up took place, the ice caps in the poles would begin to melt, thus raising sea level several meters and severely flooding coastal cities. Also, the increase in atmospheric temperature would lead to great changes in the climate of the northern hemisphere, possibly resulting in an alteration of the Earth’s chief food-growing zones.
In the past, concern about a man-made warming has concentrated on the Arctic because the Antarctic is much colder and has a much thicker ice sheet. But the weather experts are now paying more attention to West Antarctic, which may be affected by only a few degrees of warming: in other words, by a warming on the scale that will possibly take place in the next 50 years from the burning of fuels.
Satellite pictures show that large areas of Antarctic Ice are already disappearing. The evidence available suggests that a warming has taken place. This fits the theory that carbon dioxide warms the Earth.
However, most of the fuel is burnt in the northern hemisphere where temperatures seem to be falling. Scientists conclude, therefore, that up to now natural influence on the weather have exceeded those caused by man. The question is: Which natural cause has most effect on the weather?
One possibility is the variable behavior of the sun. Astronomers at one research station have studied the hot spots and "cold" spots (that is, the relatively less hot spots) on the sun. As the sun rotates, every 27.5 days, it presents hotter or "colder" faces to the Earth, and different aspects to different parts of the Earth. This seems to have a considerable effect on the distribution of the Earth’s atmospheric pressure, and consequently on wind circulation. The sun is also variable over a long term: Its heat output goes up and down in cycles, the latest trend being downward.
Scientists are now finding mutual relations between models of solar weather interactions and the actual climate over many thousands of years, including the last Ice Age. The problem is that the models are predicting that the world should be entering a new Ice Age and it is not. One way of solving this theoretical difficulty is to assume a delay of thousands of years while the solar effects overcome the inertia (惯性) of the Earth’s climate. If this is right, the warming effect of carbon dioxide might thus be serving as a useful counter-balance to the sun’s diminishing heat. [br] Which area will the weather experts keep an eye on if a warming probably takes place in the next five decades from the burning of fuels?
选项
答案
West Antarctic.
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3626129.html
相关试题推荐
【S1】[br]【S3】interests∧than→rather此句不是表示比较(that),而是表示转折(公众政策反映他们的利益,而不是穷人的利益),所
ScientistshavelongbelievedonewaytostoptheEarth’satmospherefromwa
Whenhetalkedwithhisgirlfriend,______________(他对婚姻的看法非常固执).hewasratherr
Tobebank,______(我情愿你没有卷入这件事).Iwouldratheryouweren’tinvolvedinthiscase
I’dratherhavearoomofmyown,howeversmallitis,______________________(也不
Intheatmosphere,carbondioxideactsratherlikeaone-waymirrortheglas
Intheatmosphere,carbondioxideactsratherlikeaone-waymirrortheglas
Intheatmosphere,carbondioxideactsratherlikeaone-waymirrortheglas
ManyChineseemployees,evenqualifiedgraduates,thinkrigidlyratherthancrea
Inanordinarymirroryourrighteyestaresatyourrighteyeandyourleft
随机试题
"Agoodnewspaperisanationtalkingtoitself,"musedArthurMillerin196
Forme,scientificknowledgeisdividedintomathematicalsciences,natural
Whatmessagedoesthespeakertrytoconveyinthispassage?[br][originaltext
以下关于理财师的职业特征阐述正确的是( )。A.理财师提供理财规划,要考虑短期
(2018年真题)关于投资者风险评估,表述错误的是()A.投资者应当以书面
货币经纪公司最早起源于()。A.美国 B.英国 C.中国 D.意大利
企业抵押经营贷款主要适用人群不包括()。A.中小业主 B.个体经营者 C
传染病流行过程必须具备的三个基本环节是A.病原体、环境、易感人群 B.病原体、
某市统计局在针对噪音扰民的一次调查中,当问及受访市民对哪一类噪音反感时,选择社区
对投资者而言,优先股票是一种比较安全的投资对象,这是因为其()。A:在公司财产清
最新回复
(
0
)