Sean Davis: Can we solve global warming? Lessons from how we protected the ozone layer
尚恩 · 戴維斯: 我們能解決全球暖化嗎?從保護臭氧層學到的三課
Sean Davis studies the climate impacts from human-caused changes of the chemical composition of the atmosphere. Full bio
Double-click the English transcript below to play the video.
of the country we live in,
我們居住的國家,
so maybe from about there over,
大約是從那裡開始的人,
on the causes of climate change.
關於氣候變遷成因的相關資訊。
【巴黎氣候協定認定…】
is a product of the recognition
氣候變遷是全球問題的產物…】
【巴黎氣候協定認定…】
is a global problem ...]
【…氣候變遷是全球問題的產物…】
by President Obama.
氣候變遷是全球問題的產物…】
【…氣候變遷是全球問題的產物…】
and the Paris Climate Accord.
about the Montreal Protocol
【…氣候變遷是全球問題的產物…】
【…氣候變遷是全球問題的產物…】
氣候變遷是全球問題的產物…】
familiar with this environmental problem,
這個環境問題,
environmental success story.
to examine the world we've avoided
被我們避免的世界,
for the choices we make today.
hairstyles. (Laughs)
terrible quantities of hairspray,
as propellant in aerosol spray cans.
當氣溶膠噴罐的噴射劑。
these CFCs were a problem
the ozone layer.
have heard of the ozone layer,
the ozone layer is earth's sunscreen,
十到二十英哩高的地方,
10 to 20 miles up above our heads,
向下壓到地球的表面,
to the surface of the earth,
only about two pennies thick,
大約只有兩個一分硬幣的厚度,
an amazing amount of work, though.
of the harmful UV radiation
enjoy that suntan that you get
it causes a lot of problems:
一點也不誇張。
is a threat to human safety.
it was human safety
就是為了人類安全。
of CFCs in the first place.
of refrigeration,
and flammable chemicals
the refrigeration industry
想要找安全的替代方案,
commercially viable CFCs.
能用在商業上的 CFC。
inhaled CFCs and blew out a candle
為人所知的事蹟,
CFC 之後再將它吐向蠟燭,
at a scientific conference,
I can tell you there is no way
我可以告訴各位,
with that kind of antic today.
as modern-day refrigeration
over 40 years later, in the 1970s,
would break down high in the atmosphere
在大氣高空會瓦解,
a lot of public concern.
大眾的大量關注。
of CFC usage in aerosol spray cans
美國及幾個其他國家
other countries in 1978.
in much more than just spray cans.
還有很多東西用到 CFC。
the Antarctic ozone hole,
南極上空的臭氧有破洞,
maybe a five or 10 percent reduction
over the course of less than a decade
在不到十年的時間,
had simply vanished,
than the size of the US.
are the root cause of this ozone hole,
是臭氧破洞的原兇,
was far from settled.
各國才採取行動。
this talk with,
from President Reagan --
蒙特婁議定書的引言──
when he signed the Montreal Protocol
by the US Senate.
that's truly worth celebrating.
蒙特婁議定書的三十週年。
anniversary of the Montreal Protocol.
are now declining in our atmosphere,
of healing in the ozone layer.
康復的第一個徵兆。
of those ozone-depleting substances
has actually delayed global warming
全球暖化延遲了至少十年。
asking the question,
environmental crisis, global warming,
「全球暖化」之際,
absolute certainty to act.
完全肯定才採取行動。
of the risks from CFCs
會造成風險的確定程度,
from greenhouse gas emissions.
排放會造成風險的肯定程度。
who oppose climate action use
最常採用的戰術
and focus only on uncertainty.
把焦點放在不確定性上。
of uncertainty all the time,
who drove here tonight,
because someone told you
in a car crash on the way here?
always have uncertainty.
only on uncertainty is a distraction.
是在轉移注意力。
本身就是一種行動。
to raise a healthy environment.
才能建起健康的環境。
put together by industry and governments
不只是產業及政府,
groups and scientists.
an important role in the solution.
確實看到些振奮人心的徵兆。
some encouraging signs today.
concerned about climate change
關心氣候變遷,
on that spectrum,
會需要各層級都採取行動,
to solve global warming,
be the enemy of the good.
for stopping ozone depletion,
阻止臭氧消耗的煞車踏板,
just like a tap on the brakes.
只是輕輕點了一下煞車。
amendments to the protocol
才真正做出決策,
to hit the brakes on ozone depletion.
didn't go far enough
won't solve global warming,
無法解決全球暖化,
be the enemy of the good.
「完美」成為「好」的敵人。
to contemplate the world we've avoided.
避開的世界會有幫助。
by enacting the Montreal Protocol
議定書而避免的世界
and to human well-being.
of new skin cancer cases per year
新的皮膚癌案例,
to see the end of this animation
可以看到這段動畫的結尾,
restored to its natural state.
被復原到自然的狀態。
for earth's climate future
寫這個世紀以及之後的故事時,
what will our actions be
五十年,或一百年後,
that they've avoided.
ABOUT THE SPEAKER
Sean Davis - Research scientistSean Davis studies the climate impacts from human-caused changes of the chemical composition of the atmosphere.
Why you should listen
Sean Davis studies long-term change in the chemical composition and circulation of the stratosphere, with an emphasis on human-caused perturbations to the Earth’s protective ozone layer and their impact on climate at the surface. He is a research scientist at the University of Colorado's Cooperative Institute for Research in Environmental Sciences and the NOAA Earth System Research Laboratory’s Chemical Sciences Division.
Sean Davis | Speaker | TED.com