第一篇：后天 中英文影评
气象学家杰克•霍尔（丹尼斯•奎德饰演）博士观察史前气候研究指出，温室效应带来的全球暖化将会引发地球空前灾难。杰克博士曾警告政府官员采取预防行动，但警告显然已经太晚。当罗得岛大小的冰山
撞上南极洲冰川后，全球气候引发连锁效应：冰雹重袭东京，空前飓风袭卷夏威夷，印度罕见飘雪，洛杉矶更刮起史无前例的龙卷风。杰克研究中的灾变症候逐一显现：南北极冰山的融解将大量淡水注入海洋。在一场全球性超级暴风雨来临后，地球将步入一万年前的冰河世纪。
正当杰克警告白宫紧急应变的同时，他17岁的儿子萨姆（杰克•葛伦饰演）被困在纽约，面临曼哈顿严重水患及不断下降的温度。萨姆到曼哈顿公共图书馆避难，尝试由电话联络父亲，分秒必争的杰克命令萨姆，无论如何一定要守在室内，并尽量保暖。此刻美国正式宣布民众大规模向赤道方向撤离，杰克只身北上前往纽约救萨姆，但杰克完全无法想象即将发生在他、他的儿子及地球上的一切……
本片子片头首先是一个较长的移动镜头，是航拍的，交代大的环境是在南极，然后紧接着就是冰川大裂缝的惊险情节，这一组快节奏的惊险镜头最后由一个大远景来结尾，展现了冰川大裂缝之大。这部电影的摄影善于运用前景来营造气氛，并且几乎每个镜头都是运动的，拍摄的外景喜欢用天空的夕阳作为后景，善于运用大自然赋予的美来增加构图的美。
在东京天空下冰雹的那组镜头，虽然我觉得冰雹有些大的夸张，但我感觉出一种美，像大块的水晶，给人们一种提问，明天我们的生活环境会不会出现这样的景象。如果出现该怎么样办。
“明天之后，你会在哪？”也许我们每个人都不知道答案。
当你看到《后天》电影DVD封面上的这醒目的提问时，会自问？如果我们真地在如此的挥霍自然，明天之后，我们会在哪里呢？
也许每个人都会说这是一部灾难片，我却不这样认为，只是灾难片会给人们这样的悸动吗？只是灾难片会这样引人深思吗？只是灾难片会让我们看到那么美好的“明天”吗？《后天》在我眼里是一部结合了亲情、爱情、友情、社会责任、人类文明的综合性电影。
《后天》中的主人公——古气候学家杰克·霍尔为了去营救被困于纽约的儿子，不惜冒着失去生命的危险在冰天雪地里前往纽约。这里体现的父子之情，是多么纯正——不论他们平时的相处时间是多么的少，无论杰克为了研究多么忽略他的家人，但在关键时刻，他做了保证，他前往，前往他儿子的身边。他的儿子森同样的爱他的父亲，当被问之最快乐的假期时，他的回答竟是和父亲一起遇难十多天。遇难可不是什么好事，可是能和爸爸在一起，那就是最美好的。当飓风眼袭击过后，通往“希望”的门被打开时，杰克和森面对面的那一刻，那种激动时不能言语的，不用说“我爱你”，只有一句“you make it”就能表达出全部的情感——欣慰，激动，无限的亲情，温暖的爱。
你会为了你喜欢的女孩冲向危险么？你会为了陪在她身边保护她么？至少森会。为了她，他可以参加他毫不感兴趣的学术会，只是为了能在她身边；在面临被洪水淹没的那一刻，是森跑回去救她；在她因感染面临生死难关时，是森凭借着智慧，在面对冰天雪地和饿极的狼匹的威胁下，在船中找到了治疗的药品。影片的最后，当他们得救了，她轻轻靠在了他的肩膀上，找到了一生的依靠。
《后天》之中友情、社会责任也随处可见，杰克研究所的朋友们，陪伴着他踏上了凶险而未知的旅途；森的朋友们，陪着他去寻找救命的药物；杰克的妻子——一名医生，在最后一刻都陪在她的病人身边；大量的研究人员在不懈的努力改善环境问题。
这一点一滴，都会让我体会到这部“灾难片”的深意，就像那个博士说的话一样：“重要的不是看着自己的孩子长大，而是他会长大”，是的，重要的不是明天会怎样，而是会有明天——有一个明天让我们创造。
回过头来，谈谈作为灾难片《后天》制作问题，东京街头的巨大冰雹、纽约市的滔天洪水、阻挡不了的超级龙卷风，这些在制作上可谓是做工精良，真实惊险。
本片的另一个特别的看点就是它不是发生在荒无人烟的沙漠而是在人员密集的城市——人们每天的生活场所，试想一下如果《后天》变成现实，恐慌、惊险、求生，流动的人潮，为了生存不顾一切的人们……一种人类共命运的真实感受会给人们带来某种欢喜，不仅仅是灾难，这里更有着与生存紧密关联的东西在里面。
《后天》是一部值得人们深思的影片，它教育我们要注重环保，真正做到人与自然的和谐关系。这确实也是现代社会的一个重大问题，无止境的索取、无止境的浪费，我们是为该真正的反思一下了。这部影片在叙事之间不时的会用抒情来平衡，特别是影片的后半部分被围困在图书馆的那段，表现的特别人性化，人的感情主宰着事态的发展也表现出了人在面对大自然时的弱小无助。抬起头，看着天空，希望我们天天头可以拥有蓝天，而不要等灾难发生后，像那个宇航员那样询问他的同伴：“你见过这么蓝的天吗？”
《后天》还有一个值得看的就是视觉效果，演员的表演几乎没有任何可圈可点之处。编剧导演将所有角色放在商业流水线上，打磨成统一尺寸的螺钉螺母，几乎放过了对任何可能出彩的剧情、对白、或对角色的琢磨。因此你不会看到那些面对浩劫灾难时本应变得复杂、叵测、意味深长的人性和人物关系，取而代之的是被处理得潦草苍白的爱情、亲情或者友情。它们在电脑特技造出的末世景象面前，虚假得如同一束塑料花儿。因此，当片中那两大团状如冰激凌的“风暴眼”在大气层上空缓慢移动，地球像一枚误放入冷冻室的柿子那样从外到里逐渐结满了冰碴儿的时候，我心想，这世界总算清净了……
还有一个另我难忘的镜头是在龙卷风刚刚过去之后，躲在办公楼里的那位男的怀着好奇心颤颤栗栗的走向那扇门，当他打开那扇门时，一刹那不止是他傻了，连我也愣了一下，天啊，他打开的是一扇天窗啊，是一片被扫荡过的狼狈的世界，后面还有正在示威的龙卷风，这时镜头给了一个拉远的大远景，有点世界末日的感觉。
分析了这么多，我觉得这部影片的成功之处是给我们敲了一次警钟，保护环境不是一个人的责任，也不是一个国家的职责，而是全世界人共有的责任，如果我们还继续破坏和污染生活环境的话，那么人类的后果就像在本片上演在屏幕上的一样，相信每个人都不希望电影中的灾难再在现实地球上上演一遍.When global warming causes world wide disasters and leads to an ice age, a climatologist named Jack Hall tries to rescue his son Sam who is trapped in New York.Jack must go from Washington D.C.to New York, but on the way some things happen.Can Jack rescue his son? Forget all that you have heard about The Day After Tomorrow’s dubious scientific basis.That the drastic climatological changes the film is based around could never happen is of no concern.This, after all, is a disaster film.As such, it’s supposed to present an incredibly outlandish situation that no one in their right mind would wish to experience.Who, after all, would go to see a fictional film that accurately represents the intricacies of climate change? Would you spend your hard-earned cash on a movie that had the tagline: ‘The average rainfall has risen by 0.3% over five years.Only one man can warn the world.That man is...Fish.Michael Fish’?
Plot Summary:
This movie takes a big-budget, special-effects-filled look at what the world would look like if the greenhouse effect and global warming continued at such levels that they resulted in worldwide catastrophe and disaster, including multiple hurricanes, tornadoes, tidal waves, floods and the beginning of the next Ice Age.At the center of the story is a paleoclimatologist(a scientist who studies the ways weather patterns changed in the past), Professor Jack Hall(Quaid), who tries to save the world from the effects of global warming while also trying to get to his son, Sam(Gyllenhaal), who was in New York City as part of a scholastic competition, when the city was overwhelmed by the chilling beginnings of the new Ice Age.In addition to all of the other challenges Dr.Hall faces, he's also going against the flow as humanity races south to warmer climes, and he's nearly the only one going north...后天The Day After Tomorrow英文影评
It is such a relief to hear the music swell up at the end of a Roland Emmerich movie, its
restorative power giving us new hope.Billions of people may have died, but at least the
major characters have survived.Los Angeles was wiped out by flying saucers in Emmerich's
“Independence Day,” New York was assaulted in his “Godzilla,” and now, in “The Day After
Tomorrow,” Emmerich outdoes himself: Los Angeles is leveled by multiple tornados, New York
is buried under ice and snow, the United Kingdom is flash-frozen, and lots of the Northern
Hemisphere is wiped out for good measure.Thank god that Jack, Sam, Laura, Jason and Dr.Lucy Hall survive, along with Dr.Hall's little cancer patient.So, yes, the movie is profoundly silly.What surprised me is that it's also very scary.The special effects are on such an awesome scale that the movie works despite its cornball
plotting.When tornados rip apart Los Angeles(not sparing the Hollywood sign), when a wall
of water roars into New York, when a Russian tanker floats down a Manhattan street, when
snow buries skyscrapers, when the crew of a space station can see nothing but violent storm
systems--well, you pay attention.No doubt some readers are already angry with me for revealing that Jack, Sam, Laura，Jason, Dr.Lucy Hall and the little cancer patient survive.Have I given away the plot?
This plot gives itself away.When cataclysmic events shred uncounted lives but the movie
zeroes in on only a few people, of course they survive, although some supporting characters
may have to be sacrificed.What's amusing in movies like “The Day After Tomorrow” is the
way the screenplay veers from the annihilation of subcontinents to whether Sam should tell
Laura he loves her.The movie stars Dennis Quaid as the paleoclimatologist Jack Hall, whose computer models predict that global warming will lead to a new ice age.He issues a warning at a New Delhi
conference, but is sarcastically dismissed by the American vice president(Kenneth Welsh)，who the movie doesn't even try to pretend doesn't look just like Dick Cheney.“Our economy
is every bit as fragile as the environment,” the vice president says, dismissing Jack's
“sensational claims.”
Before long, however, it is snowing in India, and hailstones the side of softballs are
ripping into Tokyo.Birds, which are always wise in matters of global disaster, fly south
double-time.Turbulence tears airplanes from the sky.The president(Perry King)learns the
FAA wants to ground all flights and asks the vice president, “What do you think we should
do?”
Meanwhile, young Sam Hall(Jake Gyllenhaal)goes to New York with an academic decathlon
team, which includes Laura(Emmy Rossum of “Mystic River”)and Brian(Arjay Smith).They're
stranded there.Ominous portents abound and Jack finally gets his message through to the
administration(“This time,” says a friend within the White House, “it will be different.You've got to brief the president directly.”)
Jack draws a slash across a map of the United States, and writes off everybody north of
it.He issues a warning that super-cooled air will kill anybody exposed to it, advises
those in its path to stay inside, and then...well, then he sets off to walk from
Washington to New York to get to his son.Two of his buddies, also veterans of Arctic
treks, come along.We are wondering:
(a)why walk to New York when his expertise is desperately needed to save millions?(b)won't his son be either dead or alive whether or not he makes the trek? And——
(c)how quickly can you walk from Washington to New York over ice sheets and through a
howling blizzard? As nearly as I can calculate, this movie believes it can be done in two
nights and most of three days.Oh, I forgot;they drive part of the way, on highways that
are gridlocked and buried in snow, except for where they're driving.How they get gas is
not discussed in any detail.As for the answer to(a), anyone familiar with the formula will know it is because he
Feels Guilty About Neglecting His Son by spending all that time being a paleoclimatologist.It took him a lot of that time just to spell it.So, OK, the human subplots are nonsense--
all except for the quiet scenes anchored by Ian Holm, as a sad, wise Scottish
meteorologist.Just like Peter O'Toole in “Troy,” Holm proves that a gifted British-trained
actor can walk into almost any scene and make it seem like it means something.Quaid and Gyllenhaal and the small band of New York survivors do what can be done with
impossible dialogue in an unlikely situation.And Dr.Lucy Hall(Sela Ward), Jack's wife
and Sam's mother, struggles nobly in her subplot, which involves the little cancer patient
named Peter.She stays by his side after the hospital is evacuated, calling for an
ambulance, which we think is a tad optimistic, since Manhattan has been flooded up to about
the eighth floor, the water has frozen, and it's snowing.But does the ambulance arrive?
Here's another one for you: Remember those wolves that escaped from the zoo? Think we'll
see them again?
Of the science in this movie I have no opinion.I am sure global warming is real, and I
regret that the Bush administration rejected the Kyoto Treaty, but I doubt that the
cataclysm, if it comes, will come like this.It makes for a fun movie, though.Especially the parts where Americans become illegal immigrants in Mexico, and the vice president
addresses the world via the Weather Channel.“The Day After Tomorrow” is ridiculous, yes，but sublimely ridiculous--and the special effects are stupendous
第二篇：后天影评
绝得灾难片也不在是以前映像中凭空想象出来的东西了它多了一些真实性，感觉其实离我们的生活很近，不禁心里产生紧张感。而这时，我觉得导演想要的效果就达到了。
看完《后天》，说实话，让我很是惊讶。想许多好莱坞的灾难大片一样，《后天》呈现给观众，在温室效应的影响下，冰天雪地的情景叫人惊叹不已。也叫人直感叹我们人类在自然面前的渺小啊。我觉得，我们看《后天》不仅仅是看它的灾难有多严重，人们面对时地惊慌又怎么样，我们应该通过电影看本质的，看出电影中导演想表达的更深一层的意思。
影片讲述的是由于温室效应造成地球气候变异，全球即将陷入第二次冰河纪的故事。《后天》中最大的看点，某过于那些通过特效喝成的灾难画面，而它力图展现和说明的是：如果温室效应和全球变暖的趋势继续发展下去，势必会引发全球范围内的重大灾难，这无疑是一个有着十分现实危机感的大背景。而本部片中，也汇集了许多顶尖特效，由于影片中的气候变异先是从海水因气温急速下降而结成的冰，因此一些大型建筑物包括自由女生像，埃菲尔铁塔，大笨钟等都被冻成了冰柱，场面极为壮观。当然，本片出了铺天盖地的自然灾害以外，也刻画了一段段在灾难危害面前，人们表现出的亲情，爱情，这种人与人之间刻骨铭心的情感刻画，也极为本片的精彩。
看完这部电影我只有一个问题，如果后天就是冰河世纪，我们可以怎么办？在这部电影里我看到了自然的力量，那些瞬间冰化的世界，可怕的龙卷风，汹涌的海浪，即时吞没一切。我被里面的情感动者，信任和亲情，帮助和责任，救护车出现的那一刻，杰克抱着萨姆的那一刻，总统认错的那一刻，太阳出来的那一刻……这些都是我们面对一切困难的时候最需要的信任和爱，不离不弃，我不知道有谁可以从电影里面真正认识到环境的重要性，尤其是那些领导人。也许什么冰川世纪是骗人的，我们也许不会面临这样的时候，但是我们每个人的心底里都知道，也许，我们迟早有一天会看到自然的报复的，我们不是在改造自然吗，自然也是可以改造我们的。我们都不希望看到坏结果，就算是电影吧，最后的镜头也是那些生存下来的人们，和一片灿烂的地球，可是我们现在所做的一切都是想着好的结果的方向发展了吗，我们问问自己……
绝得灾难片也不在是以前映像中凭空想象出来的东西了电影《后天》结尾，山姆和其他几个幸存者等到了前来营救他的爸爸杰克。纽约劫后余生的人们等到了营救他们的直升机。一个光明的结尾，一个抚慰人心灵的结尾，一个人们期待得到的结尾。像无数部好莱坞灾难大片一样，《后天》总算让我们吐出一口气，带着心有余悸的心满意足走出电影院。
看到这里，相信有人也会像我一样，悲观地在心里默念：山姆等到了杰克，但是谁来拯救我们的未来？
对资深影迷来说，会习惯性地挑剔拷贝的质量；会嘲笑冻裂楼体的严寒竟然像追踪猎物的猛兽一般，在炉火前停步不前；会诧异科考探险者居然能够把脸单独暴露在冰冻的天气下而若无其事。苛求真实在这里没有太大的意义 因为这个光明的尾巴无非是一个象征。包括杰克和山姆，包括“大人物”们，都无非是象征。象征着人类的理智，象征着人类的未来，象征人类的短视和反省。理智让我们对灾难保持警觉，未来命悬一线，而短视使我们对灾难毫无戒备并且自食苦果。在好莱坞大片里，每当地球和人类灾难临头，不管是彗星撞地球，还是外星人入侵，或者是致命病毒袭击，总会有一个凡人英雄，凭着超人的意志和九死一生的好运气，拯救人类于生死边缘。《后天》里没有“救世主”，在巨大灾难面前，谁也不能充当英雄，但却不乏智者和勇士，杰克就是这样一个主角。还有英国科学家莱逊。他们预见到了人类即将遭遇的悲剧性结局。在灾难片里，英雄常常是这样一些人物，他们所从事的职业在平时与“英雄”和“勇气”毫不沾边，比如杰克，一个古气候学家。而现实恰恰如此，假如不是“非典”，谁会知道一个叫钟南山的疾病防治中心的医生？
电影的主旨是提请每个人：关心我们的未来！片名“后天”(the day after tomorrow)无疑是一个警示——别以为灾难离我们很远，它就在眼前。
山姆得到了来自父亲的承诺，父亲履行了自己的诺言，没有弃自己的儿子不顾。可是，谁能给我们的后代以承诺，为他们的未来负责？
2012并不遥远，肯定是会有大灾难的，至于人类能不能活下去，更重要的是取决于我们有没有充分的准备应对灾难。
九十年 路漫漫, 水迢迢,我党依旧风雨如磐。幸逢90圣诞，愿我党与时俱进，成功从希望走向新希望
沧桑几度 风雨如磐
九十年 水迢迢
与时俱进 千锤百炼
九十年前
ml水迢迢
与时俱进 千锤百炼 九十年前
第三篇：《后天》影评
从电影中解读地球 期末影评 12359060 罗舒婷 2012级中文系乙班
第一部分：观后初感
不同以往的好莱坞大片 ——电影《后天》有感
“你有见过这么清澈的地球吗”这是电影《后天》ending时的最后一句话。在一场肆虐的灾难过后，我们的地球又变得如此美丽。看完电影便知这是一部制作宏大的灾难片，但相比较我以前看过的好莱坞英雄主义的大片，这一次导演并没有从某个人的伟绩上着手，而是频频在镜头前表现人类在自然面前的无力甚至是无助之感。
其中有三个镜头我的印象特别深刻，第一个镜头是一开篇，气候学家杰克霍尔要求他的同伴在冰下钻26米，孰料，冰面突然裂缝，刹那间冰层分开左右，镜头外拉，裂开的两地早已望不到头。此时观者我汗毛不禁竖起，为刚刚杰克去救那两个试验品而差点掉入深渊而不禁捏一把汗。加之背景音乐肃杀的气氛，一片冰冷冷的白，很好地渲染了灾难的可怕，给人以震撼。
接下来的第二个镜头几股龙卷风袭卷着洛杉矶城，一位大厦内的清洁工人对外面发生的事情好像全然不知。一支的白光闪过他的眼睛，这时导演特写他的脸部，带着惊恐和小心翼翼，他拿着吸尘器一步步走到门前，再推开一间屋子的门，却发现脚下已是深渊——龙卷风早已席卷了这座大厦，以至于把大厦的外皮刮落！此时镜头外拉，整个洛杉矶城一片废墟，满眼荒凉。不得不震撼于此片对于大自然力量反扑社会的表现，在一种有些混沌的深灰之中，加之象征着恐怖的黑 1
色，连人们的着装几乎一概都是深色系，银幕前光线一篇昏暗。引起观者我对接下来人类如何面对灾难的好奇。
第三个镜头，也是我自己最喜欢的一个镜头，山姆去为父母报平安，杰克对山姆说，儿子待在那，风暴旋会立刻席卷到你那里，尽可能的去烧火，一定要保暖，我会去救你。电话挂断，那一头山姆的父母相拥而泣，彼此为孩子的生死未卜，为杰克的北上而坚定信心。另一头，山姆和同学相拥，为活下去的希望而坚定。从这个镜头开始，此片便开始探讨起不同人对待灾难的不同，虽然手段不同，但目的却鲜明的一致，那便是活下去。
无论是杰克霍尔还是他的儿子山姆亦或是其他的角色，他们都不是英雄，他们没有拯救世界，从头到尾都只是在拯救自己，拯救朋友，拯救亲人，可正是这样，才让这部片子变得动人。这种打破原有好莱坞模式的故事情节，以一种现实的手法去表现在灾难面前的爱，在灾难面前人们的坚强，朋友受伤时的挺身相救，儿子遇险不顾一切的北上救援，这一切才使这部片子变得有意义起来。不去问这种好莱坞大片的制作利益，仅仅只是去探讨人性，去理解人类与自然的关系，带着这种初心的片子，才是我们观者所要去关注以及去探讨的。
“如果我们不在明天就即及时采取措施,那么灾难就在后天”，面对大自然的灾难，人类要意识到这些年人类对自然的肆意的掠夺的破坏性，一切皆有灵，就如总统在结尾所言：“过去的几周让我们深刻认识到人类有多渺小，大自然的反扑力量有多强大。一直以来，我们相信我们可以无休止地浪费自然资源而不会带来任何后果。而我想我错了，我们都错了”。是的，故事结尾我们再看到那一片美丽的地球，蓝白相间的它，清澈动人。人类是可以与自然和谐共存的，作为这样一部教育意义的灾难片，尽管一些科学知识的表现仍遭人诟病，但其深远的教 2
育意义，打破好莱坞传统手法的叙事方式，仍是值得每一个有心的观者静心学习。
第二部分：分析电影中的科学性
《后天》：57摄氏度的“冰冻飓风”
经典镜头：纽约瞬间冰封。在冰冻飓风卷过，纽约瞬间成了冰天雪地的极地，只剩下自由女神像伫立在那里，讽刺地看着只有冰和雪组成的大都市纽约。
科学谬误：对纽约被冰封的原因，影片中的科学家的解释是，飓风迅速从地球的对流层吸收了大量温度在零下100摄氏度的强冷空气，然后来到地面，所以威力足以冰封一切。但事实上，对流层的空气压力仅为地面空气压力的约十分之一，当空气从对流层下降到地面，空气的压力增大，体积减小，根据热力学第一定律，空气在体积减小的过程中会释放能量，同时由于空气是很好的绝缘体，被释放的能量不会流失，而是保持在空气中，致使空气温度升高。那么，被飓风吸收的零下100摄氏度的强冷空气到达地面后，温度是多少呢？答案是57摄氏度。这样高的温度，怎能产生冰封的效果？即使是最保守的计算，加入能量损失等因素，“冰冻飓风”的最低温度也就在零度左右，顶多叫“清凉飓风”罢了。【参考资料： 《好莱坞大片 作假没商量》(节选)作者:温俊华】
第三部分：电影中涉及到的地球科学知识的拓展介绍 冰河世纪的威胁 严重的温室效应
大陆冰雹，欧洲水灾、印度热浪、美国一天16次龙卷风，去年八月九日也创下百年最高温38.7°C。这一切让人不禁要问，地球究竟怎么了？世界卫生组织研究指出，温室效应是地球气候异变的元凶。气候暖化使得两极?融冰、海水增 3
温、洋流改变，世卫组织表示每年将有16万人因温室效应外围影响丧生，2020年死亡人数更会加倍。海平面上升更造成2500万人远离家园，第三世界将因洪水、饥荒、干旱和农作物歉收大举移民，欧洲老年人将死于热浪。
《后天》的历史原型--新仙女木冰期
美国大片《后天》中描绘了全球变暖带来的一个可怕的场景：由于格陵兰和北极的冰山融化，大量淡水进入北大西洋，降低了其盐度，最终导致墨西哥湾暖流乃至全球海洋的热盐环流完全终止，赤道和低纬度地区因而停止向极地和高纬度地区输送热量，结果导致这些地方温度剧降，进入一个新的冰河时代。
这是否仅仅是科学幻想呢？确实，出于戏剧化的需要，这部电影中有大量夸张和不合理的地方，但整体而言，此片中的情节在科学上是讲得通的，而地质学家指出，历史上地球确实发生过在极短时间内温度剧降的事件，其中最出名，对人类影响最大的就是新仙女木事件。
新仙女木事件名字的由来是因为在欧洲的地层堆积中发现了仙女木，这种现在只生长于北极地区的草本植物，证明以前欧洲气候曾经比现在冷得多。之所以叫“新”仙女木事件，是因为在更早的地层中，也发现过仙女木，故而仙女木事件不止发生一次。但是除了新仙女木事件以外，以前的历次仙女木事件和《后天》中描述的发生机制都不太相同。
新仙女木事件的独特之处，并不仅仅是平均气温降低---------历史上，地球的平均气温曾经降得更低，而在于她发生于冰川期结束，全球气温不断上升这样一个背景下。从18000年前的末次盛冰期，第四纪冰川期达到顶点开始，地球的气温就在不断上升，冰川在不断融化，但是在这个气温上升的过程中，却突然 4
发生了新仙女木这样一个气温骤降的反复，是非常有意思的，对我们今天研究全球气候变化也是很有意义的。
新仙女木事件的起因现在一般认为就是如同《后天》中所描述的那样，冰川期结束时，全球气温升高，北美大陆的劳伦泰德冰架开始融化，在公元前1万年左右的时候，冰川融解开始加速，大量淡水进入北大西洋，导致全球海洋热盐环流终止，高纬度地区气温急剧下降，积聚了大量冰雪，洁白的冰雪对阳光反射率较高，造成地球吸收的太阳辐射减少，气温进一步降低，而更低的气温又导致冰雪覆盖的面积进一步扩张，如此反复，使得地球在短时间内变得极其寒冷。
虽然新仙女木事件发生时气温下降速度并没有《后天》中那么夸张，但确实是极快的。对于冰芯最新的研究表明，当时北半球的平均气温可能在10年内下降了20度左右。
作为对比，北京和广州的平均气温相差大约10度。
那么，淡水进入北大西洋为何会破坏墨西哥湾暖流乃至全球海洋热盐环流呢？
墨西哥湾暖流发源于加勒比海，终结于挪威。因为北大西洋上盛行西风，故而墨西哥湾暖流的热量主要是通过空气输送给了西北欧（对北美也有加热作用，但小一些），造成西北欧的气候比同纬度地区要温暖、湿润得多。
但是，墨西哥湾暖流虽然源源不断地把温度较高的海水从加勒比海带到高纬度地区，加勒比海的海平面却没有下降，高纬度地区海洋的海平面也没有上涨，这说明，除了墨西哥湾暖流之外，一定还另有洋流，把高纬度地区海洋多余的水体带走，并补充给加勒比海，使得墨西哥湾暖流不中断。这就是全球海洋的热盐环流。
事实上，墨西哥湾暖流只是全球海洋热盐环流的一部分，只不过全球海洋热盐环流因为很多部分都是在海面下，所以不出名。
墨西哥湾暖流在向北流去的过程中，不断与空气进行热交换，水温降低；同时，因为墨西哥湾暖流在海洋表面进行，所以水分会不断蒸发，盐度升高。温度降低和盐度升高都会造成密度增加，当墨西哥湾暖流到达英国、挪威时，因为其密度已经非常高，就会沉入海底，再通过海底的洋流经过印度洋、太平洋，补充回大西洋。墨西哥湾暖流之所以能不中断，就在于北大西洋高纬度地区海洋表面的海水因为下沉、流走，把加勒比海地区的温水“拉”了过来；如果北大西洋高纬度地区的海水不下沉，就没有给加勒比海的温水的空间。而且，深海中的冷水流也会因为没有来源而停止，低纬度地区的海洋得不到补充，整个热盐循环就会终止。
而北大西洋高纬度地区海洋表面的海水之所以下沉，是因为其温度、盐度造成其密度较大；如果其温度高一些，或者盐度淡一些，则其密度就要降低；如果其温度足够高或者盐度足够淡，其密度可能就不足以大到下沉所需的密度，从而终止墨西哥湾暖流乃至全球海洋热盐环流。
如果足够多的淡水进入北大西洋，就可以把其高纬度地区的海水稀释到不足以下沉的密度；这就是新仙女木冰期的发生机制，也是《后天》中所描述的。
一旦墨西哥湾暖流终止，西北欧地区气温就会降到同纬度其他地区--------加拿大北部和西伯利亚的水平，冰川会在挪威、瑞典、芬兰和苏格兰等地开始发育，洁白的冰雪会把更多的太阳辐射反射回太空，减少地球所能获得的热量，进一步降低气温；气温降低又会促进冰川的发育，如此反复。虽然温度下降的速度 6
不会如《后天》中所描述的那么急剧，但是现在看，地球平均气温在10年内下降20度左右是曾经发生过的，以后再发生类似速度的降温也是可能的。
在新仙女木冰期，气温接近于末次盛冰期。中纬度地区即使在盛夏，最高气温也从不超过10度，而冬季中纬度地区的气温普遍在零下20度以下。从9月到次年5月，暴风雪几乎从不间断。站在直布罗陀海峡或者长江口，就能看到漂在海上的冰山。当冰期来临时，雪线和林线会下移和南移；大量淡水被锁在高纬度地区的冰雪中，低纬度地区的降水会剧减，这都会极大干扰人类的生活。新仙女木冰期对人类早期文明造成了极大的冲击，一般认为，北美大陆的克罗维斯文化的消失就是新仙女木冰期造成的。
当然，人类也会适应。在新仙女木冰期，西南亚和我国长江三角洲地区诞生了农业（欧亚大陆上其余地区的农业全部是由这两个地方传播扩散开来的），很有可能是寒冷干燥的气候造成的恶劣环境使得狩猎/采集不足以支持生存，逼迫人们转向农业。至于农业的发明并没有一般想象的那么困难，很有可能早期的狩猎/采集者发现，如果把自己吃剩下的果实留下一些扔到地里，第二年再来的时候同一个地方就会有丰富的食物；重复几次，农业就诞生了。现代分子生物学表明，在强人工选择的条件下，驯化农作物最短可能只需要30代（30个种植季）就能够获得足够好的品种。
新仙女木冰期大约持续了1000~1300年，约在公元前9500年结束。其结束的原因现在还不清楚，但她的结束和开始一样突然，大概是在几年内气温上升了7度。等到新仙女木冰期结束时候，人类进入了文明时代。【参考资料：百度百科】
以上是我看了电影《后天》之后，通过运用地球科学知识分析、查阅资料整理出来的期末影评，本学期的《从电影中解读地球》课程十分精彩，让我这一文科生也不得不感慨地球科学的神奇魅力，吴老师的授课更是令我受益匪浅，感谢老师一个学期18周的辛苦劳动！
祝： 工作顺利！身体健康！
罗舒婷 2013年6月
第四篇：后天 英文影评(简短)
Imagine that you’re in another ice age, shuddering from stem to stern in the biting wind, struggling to find any possible food deep in the pristine layer of snow.This , however, can exactly be true, just as the movie
We can’t wait until the last day, since no one can afford to pay for it.Gazing at the lovely world around you, how can you imagine its extinction? To make a change is painful, but also necessary.
第五篇：后天&2012英语影评
My Impressions of the Disastrous Films
I.Introduction The Day after Tomorrow and 2012 are the science fiction films, involving the advanced digital video effects and many horrible and disastrous scenes to demonstrate the power of the nature and to make people worry about the future of environment and human beings’ existence and habitat.Indeed, the plots of these two movies are similar to each other.The Day after Tomorrow mainly tells us that Jack Hall, who is the climatologist, predicts that global warming will lead to a new ice age and he issues a warning at a New Delhi conference, hoping the American vice-president can take measures to deal with it.However, the vice-president refuses to listen to Jack and he doesn’t believe that prediction will come true.Before long, some abnormal phenomena happen in man cities.Actually, the scary disaster comes much faster than Jack has imagined before.Afterwards, tornados, floods, the snow, and the hailstones attack many cities.Then the president starts to pay attention to Jack’ suggestion and decides to evacuate residents of the north so as to save people as soon as possible.At the center of the story, Jack tries to save the world from the effects of global warming while he promises to save his son, Sam, who is trapped in New York.Finally, Jack succeeds in rescuing his son through many difficulties.In 2012, the main character, Jackson, a writer in Los Angeles, who works as a driver for the Russian billionaire Yuri, accidentally finds the big secret that the heads of government officials choose 400000 people to get on gigantic arks in order to ensure the continuity of human life when the world ends.So Jackson rents a private plane, and escapes from the disaster of destruction with his ex-wife, his son, daughter and his x-wife’ boyfriend, Gordon.The center of plot mainly tells us the process of his adventurous journey to get on gigantic ark.Eventually, a small percentage of humans survive from the disaster.Generally, these two movies show us the unusual trips and feasts for eyes and ears, which make us experience some moving scenes and learn some meaningful things.II.we can experience the warmth of the brilliant humanity of people from these two films.2.1 The brilliance of the deeply love.Love is the film’s principle and eternal theme, so do these two disastrous movies.Although these two films show us the terrifying scenes during the disaster, we still see the earnest and deeply love anywhere, such as the love between parents and kids, the love between the lovers, the love between the doctor and the little cancer patient, the love between dogs and the love between the strangers.These beautiful loves fill in the films and make us deeply touched.In these two films, what impresses me is the love between Jack and his son, Sam, and the love between Jackson and his kids, Noah and Lilly.Jack and Jackson are busy in working and have no time in accompanying with their sons, so Sam and Noah misunderstand that their father don’t care about them.Actually, their fathers really love them all the time.When Sam is trapped in New York, Jack determines to go from Washington D.C.to New York to rescue Sam through the ice sheets.In 2012 when the disaster happens, Jackson tries his best to save his son and daughter;when Jackson frees the drill and its cable from the closing mechanism, Noah works together with his father because he is afraid that he will never see his father again.Love between the fathers and kids are always impressed and valuable, if people touch it in heat of hearts.Sincerely, love is the greatest gift on the earth and it shows in any form and in any occasions.Love makes people great and powerful especially in the terrible situation.Because of love, people can work together to fight against the disaster.Besides, there are many moving sights which are full of love.For example, Frank chooses to die in order to save his teammates from death;the beggar gives his last sausage to his beloved dog;Laura tries his best to help the French woman and her children;Nima, a Buddhist monk helps Jackson’s family to get on ark;the American geologist Adrian convince other G8 leaders to let the remaining people on board.Altogether, these warm sights just show the brilliance of humanity, the beautiful love.2.2 The significance of the valuable bravery.Bravery is one of the most beautiful brilliance of humanity in the film.In these two films, most people keep brave to struggle against the disaster.The reporters are bold in reporting immediate news and message about the weather and environment.Doctor, Lucy is the only one person who has enough encourage to stay with the little cancer patient to wait the ambulance when others leave the hospital.The three scientists, who are trapped in the snow area, have nothing to choose, but to wait for death.Honestly, they are so brave and calm to confront of the disaster.Because of braver, they can face the disaster and deal with the situation calmly and optimistically.Due to the bravery, they devote themselves to their jobs with the heart and soul.Thanks to bravery, we can see many people stand fast at their posts.Therefore, bravery is one of the important key to overcoming the difficulties, conquering natural disaster and surviving.Without it, lives are lost, and dreams are destroyed.I think without bravery, people are easy to damage.2.3 The generousness of the great sacrifice.With the heavy heart, I find the brilliance of humanity, sacrifice, which always makes me shed tears.In the films, we can see many scientists sacrifice their personal interests so as to save the humans from the death;many daring rescuing teams make efforts to rescue others at the risk of their lives.Especially, the president in 2012 declines to get on ark but stays along with his people, making me moved deeply.What surprise me is that Yuri, who is a mean and selfish man, sacrifices his life to get his sons on board at last.Even if the disaster is terrible, and many people are eager to survive, there still are many people sacrificing their lives to save others in that they are great and disinterested in most cases.III.we can draw some important and profound lessons from these two films.3.1To value what we have possessed.After experiencing the disaster and surviving finally, the main characters in these two films both learn that value is very significant.At fist, they regard their jobs as the priorities, so that they don’t have enough time to stay with their family and express their love to those who they really care about.As the disaster happens, they just find out what is most important to them.When the death is coming, they just find that family is significant and they just regret not spend time on their family, their friends and their relatives.Unfortunately, the main heroes survive eventually, and they are reconciled with their family through the experiencing the disaster.It is obvious that people should better possess what they have at present, or we may have no opportunities in the future.Most people always fail to value something they have, but they often regret not to value before.They always understand the meaning of value when they lose something.So just spare some time to value some people who are important in your life and value the present as soon as possible.3.2 To revere the nature and protect the environment.The Day after Tomorrow and 2012 delivering the environmental message, which making people take seriously to revere the nature and protect the environment.In reality, we human always believe that we are the most senior creatures who can dominate the nature.We think we are so wise and powerful that we can deliberately and recklessly demand what we want from the nature and destroy the nature and environment as we please.Gradually, human being tries their best take advantage of any resources on the earth, and we human beings are only concentrated on the development of economy at any cost, but ignore to care about our nature and our environment.As a result, our environment is worse and worse, which threatens our habitat.Anyway, the nature is powerful, and the environment is very fragile, so we’d better revere and protect the environment.Otherwise, we will be punished by the nature the day after tomorrow and suffer a lot in the future.Ⅳ.Conclusion
The Day after Tomorrow and 2012 are the same types of the disastrous films, in general.Personally, I like The Day after Tomorrow better.In The Day after Tomorrow, the disaster results from that people excessively exploit the natural resources on the earth, which destroys the ecological balance of the earth.Just as the vice-president say that“we are wrong, I am wrong.We are wrong to treat the environment badly.” So the reason of the disaster and the president’s word are good for people to reflect and think deeply about the nature’s power and the environmental protection.While in 2012, the disaster happens because of solar flare bombardment the Earth's core begins heating up at an unprecedented rate, eventually causing crustal displacement.Seemingly, people are just the victims of disaster.So people hardly repent their errors and they cannot aware of the consciousness of environmental protection.What’s more, comparing these two movies, I am totally affected by the The Day after Tomorrow due to its deeply and strong emotions, and I am satisfied with its ending.While, I don’t agree the result of 2012, in which only some rich people and scientists and government officials survive.In fact, many people have no any opportunities to know the fact that the big disaster will comes because everything was kept by government around the world from the ordinary people.As far as I am concerned, all people have right to survive, whether they are rich or not.After all, everyone is equal and important.Generally speaking, I can benefit something meaningful and helpful from these two films.
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