时间:2019-01-20 作者:英语课 分类:2017年Scientific American(三)月


科学美国人60秒 SSS Biggest Rivers Are Overhead - 英语课
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  1. 1 科学美国人60秒 SSS Biggest Rivers Are Overhead 英语课
英语课

 


Back in January, one of California's oldest and most iconic residents keeled over: the Pioneer Cabin tree, a giant sequoia 2 in Calaveras Big Trees State Park…so big you used to be able to drive through it.


The giant was blown over by high winds—delivered by what’s called an atmospheric 3 river, a long stream of water vapor 4 in the atmosphere, 100 miles wide. These systems might be thought of as some of the biggest rivers on Earth. 


"You could kind of pose it that way, yeah." Duane Waliser (WALL-i-ser), an atmospheric scientist at the Jet Propulsion Lab. "An atmospheric river will carry the same amount of water vapor as, say, 15 to 20 Mississippi Rivers." 


Waliser and his JPL colleague Bin 1 Guan developed an algorithm to detect atmospheric rivers in historical data, so they could connect the sky flow to extreme events on land. And they found that, if you look at just the top 2 percent most extreme wind- and rain- and snow-storms in the world's midlatitude regions—atmospheric rivers are linked to up to half of them.


And of the 19 windstorms in Europe that cost insurance companies the most money—billions of dollars in damage—atmospheric rivers were behind three-quarters of those events. The study is in the journal Nature Geoscience. [Duane Waliser and Bin Guan, Extreme winds and precipitation during landfall of atmospheric rivers]


Looking ahead, as global temperatures rise, that warmer air holds more water vapor. "And so the tendency looks like, if the climate does warm, you would tend to have stronger or more frequent atmospheric rivers." And as this study shows: it won't just be that a hard rain's gonna fall. We'll be blowing in the wind, too.


—Christopher Intagliata



n.箱柜;vt.放入箱内;[计算机] DOS文件名:二进制目标文件
  • He emptied several bags of rice into a bin.他把几袋米倒进大箱里。
  • He threw the empty bottles in the bin.他把空瓶子扔进垃圾箱。
n.红杉
  • The sequoia national forest is at the southern end of the sierra nevada range.红杉国家公园位于内华达山脉南端尽头处。
  • The photo shows the enormous general Sherman tree in California's sequoia national park.照片显示的是加利福尼亚州红杉国家公园内巨大的谢尔曼将军树。
adj.大气的,空气的;大气层的;大气所引起的
  • Sea surface temperatures and atmospheric circulation are strongly coupled.海洋表面温度与大气环流是密切相关的。
  • Clouds return radiant energy to the surface primarily via the atmospheric window.云主要通过大气窗区向地表辐射能量。
n.蒸汽,雾气
  • The cold wind condenses vapor into rain.冷风使水蒸气凝结成雨。
  • This new machine sometimes transpires a lot of hot vapor.这部机器有时排出大量的热气。
学英语单词
a-m threshold
a-straddle
ad damnum
amiral
AMPK
Ballyhooly
benzene alkylation
bleeding export
C.cm.
callan symanzik equation
calostachyus
Cascades, Pte.des
crdi
cycle stock
cylindromatous endothelioma
dinitz
discount expense
divoon
earthiest
effective chart width
epoxy repair putty
euroinfo
feel no enthusiasm about
fines and surcharges for underestimation
fixed array method
free scheme
fried tomato
fuel assembly fall
gang-punch
gelation point
growing district
gun fire control system
half-experience formula
hand regulator
Hebbs hypothesis
Honorius II
jingwanhong soft plaster
kalea
koap
Lactariidae
lithium hydroxide
low-rises
major offensive
martinshaw
masseur
MDMA
motte
new creation
noise balancing system
oil producing country
okung
osetra
paraglossia
parallel backtracking
paramastigote
Pashur
phoniest
physical constitution
plug hatch
post elastic behavior
prescription of rights
public service pension fund statistics
publicity-seekers
quickopener
quyne
Radetzky, Count Joseph
renoviste
ring chromatid
rodliker
root face height
scholler
scintillator solution
second (first-officer) pilot
sensor transfer function
settler
single-cascade action
site plan
spalacids
spondylous
Stundist
subminiature engineering
support shaft
technical colleges
test pattern beam
thallodic
thallophyte (pl.thallophyta)
third party logistics
to demonstration
transmitted-frequency band
treblier
truth value
tulun
undepreciated balance of the cost
unfounded decision
vacuum machine
vacuum-tube bridge
ventricular band of larynx
VLE
wet compression chamber
whole sale cost
work-depth model
write break point