未来三天预报英语作文【一】
天气预报是怎样测定的?为什么有时会报不准呢?
为天气预报提供信息最重要的一环就是气象卫星。它所携带的拍摄镜头通常聚焦在地球上时是一个1平方公里见方的“点”。随着地球的自转和卫星不断地拍摄，一个个点逐渐连成线，经过25分钟，整个地球的图像都可以被拍摄下来。
卫星会将这些图片发送回地面，由地面系统处理。对于接收图像的气象工作者来说，传回的每一张图的获取时间、纬度、精度等信息都是事先根据卫星设定程序计算好的。将所有的图片拼合在一起再对比资料，就可以找到例如北京上空的云图。
与此同时，卫星上安装的各种气象遥感器也会将接收和测量到的地球及其大气层的可见光、红外和微波辐射等信息转换成电信号传送给地面站。由于辐射会和大气介质发生相互作用，在相互作用的过程中，辐射会受到大气的影响。地面系统利用卫星观测到的辐射，反过来可以推出地球表面和大气的状态，大气中云的物理状态。
北京站负责将处理和分析后的气象信息发送给全国所有的气象台站。这个时候，各地气象台站还要根据各个气象观测点收集到的气压、气温、风速、风向、湿度等数据进行气象分析，从而推算出地面近几日的温度和天气状况，根据这些气象信息，气象部门目前可以相对准确预告未来24小时至48小时的天气。
但是，气候系统非常复杂，随时都会发生变化。天气预报的`准确率受气象技术设备和人员水平等因素的限制。特别是夏季，降雨过程复杂多变，经常是在没有明显征兆的情况下突然降临，而且分布非常不均匀，加大了预报员对天气判断的难度。今年我果遭遇大范围干旱天气，去年还有气象专家推测今年夏季会提早到来，但是直到4月底，北方的天气依然相对较冷。有些地区甚至出现了降雪。当时很多人指责气象部门没有及时预报。
实际上，世界上还没有任何一个国家有能力做出20天以后的天气预报。目前，发达国家也只掌握了200年内相对详细的天气观测资料，而我国在1951年才建立起一个比较完整的气象台站网，对气象规律掌握得还不够，所以天气预报也经常会出现误差。我们将会研发更为先进的气象卫星和相关气候监测系统，相信可以给我们的生活带来更大的便利。
未来三天预报英语作文【二】
人们渴望预知天气变化，真正做到“未雨绸缪”，但“天有不测风云”，精准预测天气确实不是一件容易的事。
影响天气预报准确率的基本原因是大气运动自身具有随机性。大气变化是一个复杂的运动过程，充满了各种各样的可能性。对此，美国气象学家爱德华?罗伦兹有个生动的比喻：“巴西丛林的蝴蝶扇动一下翅膀，可以引起美国德克萨斯州的飓风。”这就是大家熟知的“蝴蝶效应”。在随机性的多重影响下，任何一种预测结果，都是要担风险的。人们对天气形成初始状态的观测，总是会有某些误差，而哪怕是很小的误差，也会使预测的结果大相径庭。
各种复杂地形也会给大气运动带来影响。如青藏高原地势较高，受到太阳辐射后温度上升，尤其是夏天，它便成为高空大气环流的一个热力源;当气流经过时，要么从上面越过去，并被加热，要么从旁边绕流过去，从而形成天气系统比如西南涡等，这些，使得整个大气环流形势变得十分复杂。可见错综复杂的地形地貌，也是，个爱添乱的“捣蛋鬼”。
何况，不同的天气类型，预报准确率差异很大。像高温、寒潮、梅雨这些空间范围较大、时间尺度较长的天气，预报准确率就比较高。全国24小时晴雨预报和最高、最低，温度预报，能够做到“不离十”。但有些天气发生得突然，具有很强的局部地域性特征，例如强对流天气，也就是短时间内发生的冰雹、强降雨、强雷电、龙卷风等，预报准确率就非常低。
在多种因素的影响下，预报的难度当然就增大了。这如同玩拼图：如果只有8个板块，儿童也能拼出来;如果是800块，成人可以拼出来;但如果是8000万块，甚至更多，那“神”也都无法拼出来了。
不过，随着计算机的普及和数值预报手段的改选，天气预报准确率正在不断提升。英国气象局正在开发一种新的计算机模型，气象人员可以利用它发布面积仅为1平方公里地区的天气预报。不久的将来，人们可以即时获取更小区域内精确的天气信息。届时，气象学家发布温布尔登网球赛天气预报时，将不会像现在这样，只能预报温布尔登所在的伦敦东南部的天气，而可以把精确度定在比赛场地500米的范围内
未来三天预报英语作文【三】
小猕猴边跑边喊，“要下雨了，大家快做好防雨准备，以防感冒！”
跑上一段山坡时，小猕猴看到小熊蹲坐在一棵大树下，恹恹欲睡。
“小熊，小熊，要下雨了，快回家去吧。”小猕猴推一推小熊说。
“我知道要下雨了，可我闻着蜂蜜好香哟！”
“你怎么知道要下雨的呢？”
“你看！”小熊仰头指着树上的一个大蜂窝说，“蜜蜂们都没有出去采花蜜，害的我想吃点蜂蜜也没有机会。”
“咦，怎么回事呢？”小猕猴望着蜂窝周围密密麻麻的蜜蜂问小熊，“他们怎么不出去采花蜜呢？”
小熊说：“下雨前，他们都不出去。”
“噢，蜜蜂也知道要下雨呀！”
“是的。”小熊说，“蜜蜂的前后两对翅膀很轻很薄，便于飞行，可是在降雨前，因大气中含水量增多，湿度大，气压低，蜜蜂容易沾上细细的水珠，使体重增大，翅膀变软变重，振翅频率减慢，飞行较困难，所以只好呆在蜂巢里不出来。”
“噢，原来是这样。”小猕猴说，“既然今天吃不到蜂蜜了，那我们快到护林员的小房子里避雨去。”
小猕猴和小熊一块向护林员的小房子跑去。
未来三天预报英语作文【四】
In 2080， cars are going to be different. The car of new type is made from China. The motor is quicker than other cars. The car can be droved 500 kilometers per hour.
Computers are going to be inside every car. It is going to control the car. You don’t need to be worried about the red light.
The car is going to go on special tracks above the city. It would be not so crowded and noisy.
There is a special air conditioner in the car. In winter you can be warm there. In summer you can be pleasantly cool.
If you have this car, you will be very fashionable.
未来三天预报英语作文【五】
By the time you read this you will be 30. At the age of 18 I had so many hopes and dreams about where you'd be, what you'd be doing and with whom you'd spend your life with.
Right now I hope that you have traveled and seen everything you've always wanted to, both in Canada and overseas, and maybe even settled down somewhere in Australia doing some research in the field of biology (genetics.
I hope you're married to the man of your dreams. The man of mine is Gwynn. He is originally from South Africa (another place I wish to visit.
You'll probably have two children of your own – a girl(Michaela Anne and a boy (name yet to be decided.If everything goes according to plan you'll be living in Australia in a big house in a small town outside of a big city with a lot of land, a dog, Gwynn and your two beautiful children. Hopefully you have a career in the medical field, maybe doing research in genetics. Gwynn will be a computer programmer and you will be doing alright for yourselves.
However, if things don't go according to plan for you, I wish you all the love, happiness and joy in the world and don't settle for anything less than the best since that is absolutely what you deserve.
Live long, be happy and live life to it's fullest.
Love Sherri "18″
未来三天预报英语作文【六】
What appearance is prospective car?You do not know!That le,it is like train of magnetism in suspension in sky travel.There is a guide in the car -- satellitic navigation system.The glass of the car can prevent ultraviolet ray,make the person\\'s eye is not harmed.The car is to rely on to compress the reactive force that air releases to fill the car,rely on another compression again air is in a rear eduction,the car runs quickly to ahead like jet aircraft.Car rate of future is very rapid,one hour can run hundreds of kilometers,even thousands of kilometer.You let it open way of how many kilometer,want to say to the car only,the car can bade by yours go doing.Prospective car has a lot of advanced places:There is same thing in the car,can control the steering wheel of the car.
You should say where to go to only,it can take you automatically where to go to.It can operate steering wheel,need not you worry about.Reached that place,the car can stop automatically,next,can give out automatically \\" toot toots \\" sound,remind you to had arrived stood.Car shell of future is very beautiful.Whole car is yellow.But,you look carefully,there can be one to above discovery the horizontal line of multicoloured,match very equably.There is a thing in the car,can make the car has invisible effect.How!Prospective car is magical!Believe you like very much certainly!
