Exposing Regular Myths about A dangerous atmospheric devation.


41 views
Uploaded on:
Description
Worry about a worldwide temperature alteration is in light of late temperature patterns
Transcripts
Slide 1

Exposing Common Myths about Global Warming Scott Denning Monfort Professor of Atmospheric Science Director of Education, CMMAP Colorado State University

Slide 2

Media Myths about Climate Be distrustful … be exceptionally suspicious ! Worry about an Earth-wide temperature boost depends on late temperature patterns "9 of the 10 most sizzling years on record … " If some person could locate some other reason for late warming, we could stop stressing Global warming is a hypothesis taking into account convoluted PC models CO 2 is "air contamination" … slicing emanations will prompt falling CO 2 and subsequently cooling If we quit blazing coal, we\'ll solidify oblivious!

Slide 3

Global Warming is Based on Common Sense not PC models … not late temperatures … not entangled!

Slide 4

Planetary Energy Balance Energy In = Energy Out But the watched T s is around 15° C

Slide 5

Dancing Molecules and Heat Rays! About the greater part of the air is made of oxygen (O 2 ) and nitrogen (N 2 ) in which two iotas of the same component offer electrons Infrared (warmth) vitality emanated up from the surface can be consumed by these particles, yet not exceptionally well O N Diatomic atoms can vibrate forward and backward like balls on a spring, however the closures are indistinguishable

Slide 6

Dancing Molecules and Heat Rays! Carbon dioxide (CO 2 ) and water vapor (H 2 O) are distinctive! They have numerous more approaches to vibrate and turn, so they are great at engrossing and emanating infrared (warmth) radiation O C O H Molecules that have numerous approaches to squirm are called "Nursery" atoms Absorption range of CO2 was measured by John Tyndall in 1863

Slide 7

Common Sense Doubling CO 2 would add 4 watts to each square meter of the surface of the Earth, all day, every day Doing that would make the surface hotter This was known before lights were imagined! 4 Watts John Tyndall, January 1863

Slide 8

Common Misconception #1 "Desires of future warming depend on extrapolation of late warming patterns" WRONG! They depend on the possibility that when we add vitality to the surface, it will warm up

Slide 9

Be a Climate Skeptic Maybe something will happen in the Earth framework that "counterbalances" an additional 4 watts of warmth in each square meter of the planet The sun could diminish by 4 W m - 2 Giant billows of interplanetary dust may obstruct the daylight Fog could all of a sudden cover the Earth\'s surface Media big names appear to be sure something like this will happen Call me a cynic!

Slide 10

19 th Century Climate Physics (Svante Arrhenius, 1897) a S 0 es T s 4 S 0 air Differentiate, apply chain guideline T s Earth Arrhenius worked out a basic equation for the adjustment in surface temperature given a change in viable environmental emissivity because of CO 2

Slide 11

19 th Century Climate Physics(cont\'d) W m - 2 (from satellite information) Plug in measured qualities T s = 288 K W m - 2 (for 2 x CO 2 from radiative exchange) For CO 2 alone (no criticism), expect around 2 °F warming for 2 x CO 2

Slide 12

D T S D vapor D albedo Climate Feedback Processes Positive Feedbacks (open up changes) Water vapor Ice-albedo High mists D hey cloud D LW D lo cloud D e Negative inputs (moist changes) Longwave cooling Low mists

Slide 13

Learning from the Past atmosphere changes uncover atmosphere affectability

Slide 14

CO 2 and the Ice Ages Over the previous 420,000 years air CO 2 has shifted somewhere around 180 and 280 ppm, beating in time with the last four frigid cycles CO 2 370 ppm in 2000 ice Vostok (400k yr) Ice Core information (Petit et al, 1999)

Slide 15

Estimating Total Climate Sensitivity At the Last Glacial Maximum (~ 18k years back) surface temp ~ 6 °C colder CO 2 was ~ 180 ppm (weaker nursery, 4.1 W m - 2 more LW  ) Brighter surface because of snow and ice, gauge 3.4 W m - 2 more reflected sun powered  Or, for multiplying of CO 2 : expect 4 x 0.8 = 3.2 °C of warming

Slide 16

Review: 19 th Century Physics (redesigned utilizing paleo-information) Forcing: changes in properties of air as measured by spectroscopy (4 W m - 2 for every multiplying of CO 2 ) Feedback: both positive and negative, all out reaction to constraining evaluated from Ice Age atmosphere information (around 0.8 °C per W m - 2 ) Response: around 3.2 °C warming for 2 x CO 2 No atmosphere models required … simply in view of perceptions (current computations concur … fortuitous event?)

Slide 17

CO 2 and the Modern Age Over the previous 420,000 years air CO 2 has fluctuated somewhere around 180 and 280 sections for each million, beating in time with the last four chilly cycles Since the Industrial Revolution , CO 2 has risen quickly CO 2 388 ppm in 2009 370 ppm in 2000 ice Vostok (400k yr) Ice Core information (Petit et al, 1999) from estimations

Slide 18

CO 2 and the Future Over the previous 420,000 years air CO 2 has shifted somewhere around 180 and 280 sections for every million, beating in time with the last four frosty cycles Since the Industrial Revolution , CO 2 has risen quickly If China & India create utilizing 19 th Century innovation, CO 2 will achieve 900 ppm in this century CO 2 900 ppm in 2100 388 ppm in 2009 ice Vostok (400k yr) Ice Core information (Petit et al, 1999) You ain\'t seen nothing yet!

Slide 19

Common Misconception #2 "When we diminish or stop the smoldering of fossil fuel, the CO 2 will leave and things will retreat to ordinary" CO 2 from fossil fuel will respond with seas, yet just as quick as they "blend" Eventually, fossil CO 2 will respond with rocks About 1/3 of today\'s emanations will stay noticeable all around for all time! Bowman et al, Ann. Rev. Earth Plan. Sci. (2009)

Slide 20

So What?

Slide 21

More Paleoclimate Data

Slide 22

More Paleoclimate Data

Slide 23

More Paleoclimate Data

Slide 24

Imagine it\'s 1800, and you\'re in control … Somebody presents you with an excellent thought for changing the world economy: Dig 8 billion tons of carbon out of the ground each year Build an arrangement of pipelines, supertankers, railways, thruways, and trucks to convey it to each road corner on the planet Build a huge number of autos consistently, and a large number of miles of streets to drive them on Generate and pipe enough power to each house to influence lights & stereos & plasma TVs … "and here\'s the organized bill … "

Slide 25

Thinking about Co $ t $ Our worldwide society manufactured that very framework We didn\'t all become bankrupt building it … We got rich past the voracity of rulers! Presently we get the opportunity to do it once more!

Slide 26

The Worst Media Myth of All Without the endowment of modest fossil vitality, human advancement will disintegrate! Individuals will solidify oblivious! They\'ll starve! "The sky is falling!" Be doubtful … be extremely incredulous !

Slide 27

That\'s Pathetic! You\'d think those un-American naysayers had never known about private enterprise … of the enchantment of business sectors … of the imaginative virtuoso of a free people! Do you truly think business visionaries will sit and shudder in a post-fossil world?

Slide 28

Choose Your Future Alarmist lawmakers and savants say: "Current riches is because of the endowment of modest fossil fuel. On the off chance that we quit blazing coal we\'ll solidify oblivious!" I incline toward: "Advanced riches comes about because of inventiveness and diligent work. Before we come up short on oil, we\'ll create vitality advancements for the 21 st Century. Our future is splendid. "

Recommended
View more...