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
40
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
Youshouldnot______yourfather’sadvice.Anywayheismuchmoreexperiencedt
______Englandimprovetheirgame,they’regoingtolosethematch.A、UnlessB、As
鸣禽(英国) 过去三周所经地区之内,虽然谷、草、牛、羊都好,却有一个缺点,在我
图示单元体,法线与x轴夹角a=45°的斜截面上切应力τ是:
下列选项中,对一事不二罚原则的理解正确的是( )。A.对当事人的违法行为不得给予
气相色谱法中测定有机物的常用检测器是A.氢焰离子化检测器B.电子捕获检测器C.紫
可能发生人身伤害事故的地点,如果设专人监护可不必设立警示标志。
某市境内国道、公路、城际快速通道、运煤专线等交通干线纵横交叉,近期致人死亡交通事
战略控制的方法主要有( )。A.事前控制 B.事中控制 C.事后控制 D.
按《建设工程施工现场管理规定》的要求,计划批准的开工项目应由()向有关部门
最新回复
(
0
)