The Biggest Control Knob: CO2 in Earth's Climate History

By: Dr. Jeff Masters , 9:05 PM GMT on March 24, 2010

Share this Blog
12
+

It's been a busy past two months of weather and climate change news, and I haven't found time to blog about the research presented at December's American Geophysical (AGU) meeting in San Francisco. That is the world's largest scientific conference on climate change, and the place to be if you want to get the pulse of the planet. The keynote speech at the AGU meeting was given by Dr. Richard Alley of Penn State University. Dr. Alley is the Evan Pugh Professor of Geosciences at the Pennsylvania State University, and one of the most respected and widely published world experts on climate change. Dr. Alley has testified before Congress on climate change issues, served as lead author of "Chapter 4: Observations: Changes in Snow, Ice and Frozen Ground" for the Fourth Assessment Report of the Intergovernmental Panel on Climate Change (IPCC), and is author of more than 170 peer-reviewed scientific articles on Earth's climate. He is also the author of a book I highly recommend--The Two Mile Time Machine, a superb account of Earth's climate history as deduced from the 2-mile long Greenland ice cores. A standing-room only audience of over 2,000 scientists packed the lecture hall Dr. Alley spoke at, and it was easy to see why--Alley is an excellent and engaging speaker. I highly recommend listening to his 45-minute talk via a very watchable recording showing his slides as he speaks in one corner of the video. If you want to understand why scientists are so certain of the link between CO2 and Earth's climate, this is a must-see lecture.


Figure 1. Dr. Richard Alley of Penn State University, delivering the keynote speech at the 2009 AGU conference on climate change.

The Biggest Control Knob: CO2 in Earth's Climate History
Earth's past climate has been shaped by a number of key "control knobs"--solar energy, greenhouse gas levels, and dust from volcanic eruptions, to name the three main ones. The main thrust of Dr. Alley's speech is that we have solid evidence now--some of it very new--that CO2 has dominated Earth's climate over the past 400 million years, making it the climate's "biggest control knob". Dr. Alley opens his talk by humorously discussing a letter from an irate Penn State alumnus. The alumnus complains that data of temperatures and CO2 levels from ice cores in Antarctica don't match:

"CO2 lags Earth's temperature...This one scientific fact which proves that CO2 is not the cause of recent warming, yet...Dr. Alley continues to mislead the scientific community and the general public about 'global warming'. His crimes against the scientific community, PSU, the citizens of this great country, and the citizens of the world are significant and must be dealt with severely to stop such shameful activities in the future".

Dr. Alley explains that the irate alumnus is talking about the Antarctic ice core record, which shows that as we emerged from each ice age, the temperature began increasing before the CO2 did, so increased CO2 was not responsible for the warmings that brought us out of these ice ages. Climate change scientists and skeptics alike agree that Earth's ice ages are caused by periodic variations in Earth's orbit called Milankovich Cycles. "There's no doubt that the ice ages are paced by the orbits", says Dr. Alley. "No way that the orbit knows to dial up CO2, and say 'change'. So it shouldn't be terribly surprising if the CO2 lags the temperature change. The temperature never goes very far without the CO2. The CO2 adds to the warming. How do we know that the CO2 adds to the warming? It's physics!"

Dr. Alley then discusses that the physics that govern how CO2 absorbs and re-emits heat energy, when plugged into state-of-the-art climate models, show that about half of the observed 5 - 6°C natural warming that occurred since the last ice age ended was due to extra CO2 added to the atmosphere. At the peak of the Ice Age, CO2 was about 190 ppm. By the end, it was about 280 ppm (Figure 1). Earth's orbital variations "forced" a warming, which caused more CO2 to escape from swamps and oceans, with a time lag of several centuries. The increased CO2 reinforced the warming, to double what it would have been otherwise--a positive feedback loop. "Higher CO2 may be forcing or feedback--a CO2 molecule is radiatively active regardless of how it got there", says Dr. Alley. "A CO2 molecule does not remember why it is there--it only remembers that it is there". In other words, the fact that higher CO2 levels did not trigger an end to the Ice Age does not mean that the CO2 had no warming effect. Half of the the observed 5 - 6°C natural warming that occurred since the last ice age ended was due to the extra CO2 added to the atmosphere. So, the irate PSU alumnus was half right. The CO2 does lag temperature. However, we can only explain approximately half of the warming since the last ice age ended if we leave out the increase in CO2 that has occurred. "If higher CO2 warms, Earth's climate history makes sense, with CO2 having caused or amplified the main changes. If CO2 doesn't warm, we have to explain why the physicists are so stupid, and we also have no way to explain how a lot of really inexplicable climate events happened over Earth's history. It's really that simple. We don't have any plausible alternative to that at this point".


Figure 2. Ice core record from Vostok, Antarctica, showing the near-simultaneous rise and fall of Antarctic temperature and CO2 levels through the last 350,00 years, spanning three ice age cycles. However, there is a lag of several centuries between the time the temperature increases and when the CO2 starts to increase. Image credit: Marian Koshland Science Museum of the National Academy of Sciences: Global Warming Facts and Our Futures, originally provided to that site by Kurt Cuffey, University of California, Berkely.

CO2 and temperatures rise and fall in synch
Dr. Alley continues with a discussion of how CO2 and temperature levels have risen and fallen in synch over most of geologic time. But for many years there was still a mystery: occasionally there were eras when temperature changes did not match CO2 changes. But new paleoclimate research, much of it just in the past two years, has shown that nearly all of these mis-matches were probably due to suspect data. For example, the mismatch in the Miocene Era has significantly improved, thanks to a new study published this year by Tripati et al. Another example occurs during the Ordovician Era 444 million years ago, as discussed in a recent post at the excellent skepticalscience.com blog.


Figure 3. Atmospheric CO2 and continental glaciation, 400 million years ago to the present. The vertical blue bars mark where ice ages have occurred. The length of the blue bars corresponds to how close to the Equator the ice sheets got (palaeolatitude, scale on the right side of the plot). The left scale shows atmospheric CO2 over the past 400 million years, as inferred from a model (green area) and from four different "proxy" fossil sources of CO2 information. This is Figure 6.1 of the Palaeoclimate chapter of the 2007 IPCC report.

Is there anything else we should be worried about?
Dr. Alley continues with a discussion of other influences that may be able to explain global warming, such as volcanos, changes in solar output, and cosmic rays. A whole bunch of the competing hypotheses don't work", says Dr. Alley. "When there's a bunch of big volcanos, they make it cool. If volcanos could get organized, they'd rule the world. There might be a tiny bit of organization due to flexing of the crust, but they're not controlling the world".

Regarding solar changes: "When the sun changes, it does seem to show up in the temperature record. As far back as we can see well, the sun is friendly, it doesn't change much. If the sun changed a lot, it would control things hugely. But it only changes really slowly--as far as we can tell. The record doesn't go back as far as we'd like, and there's work to be done here--but it just doesn't seem to be doing much".


Figure 4. Greenland ice core proxy measurements of temperature (top curve) and cosmic ray flux (bottom curve) for the past 60,000 years. The Earth's magnetic field weakened by 90% 40,000 years ago, for a period of about 1,000 years, but there was no change seen in the temperatures in Greenland.

Regarding cosmic rays: "The sun doesn't change much, but the sun modulates the cosmic rays, the cosmic rays modulate the clouds, the clouds modulate the temperature, and so the sun is amplified hugely. It's really interesting hypothesis, there's really good science to be done on this, but there's reason to think its a fine-tuning knob". He goes on to show an ice core example from a period 40,000 years ago (Figure 4) where the Earth magnetic field had near-zero strength for hundreds of years. This allowed a massive flux of cosmic rays to penetrate to the Earth's surface, creating a huge spike in ice core Beryllium-10, a radionuclide made by cosmic rays. If cosmic rays were important to climate, we would expect to see a corresponding major swing in temperature, but the ice core shows no change during the period of enhanced cosmic ray bombardment 40,000 years ago. "We had a big cosmic ray signal, and the climate ignores it", Dr. Alley comments.

How sensitive is climate to a doubling of CO2?
The IPCC report talks extensively about computer climate models' calculations of "climate sensitivity"--how much Earth's climate would warm if CO2 doubled from pre-industrial levels of 280 ppm, to 560 ppm (we're currently at 390 ppm). A mid-range number from the 2007 IPCC report often used by climatologists is that the climate sensitivity is 3°C for a doubling of CO2. Dr. Alley takes a look at what paleoclimate has to say about the climate sensitivity to CO2. "The models actually do pretty well when you compare them to the past. The best fit is 2.8°C.

Dr. Alley concludes, "Where we really stand now, is, we're not quite at the pound on the table, this story is very clearly not done. But an increasing body of science indicates that CO2 has been the most important controller of global average climate of the Earth."

I'll have a new post Sunday or Monday.

Jeff Masters

Reader Comments

Comments will take a few seconds to appear.

Post Your Comments

Please sign in to post comments.

Sign In or Register Sign In or Register

Not only will you be able to leave comments on this blog, but you'll also have the ability to upload and share your photos in our Wunder Photos section.

Display: 0, 50, 100, 200 Sort: Newest First - Order Posted

Viewing: 1076 - 1026

Page: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25Blog Index

Climate Change Killed Dinosaurs, Scientist Says
Member Since: September 10, 2007 Posts: 0 Comments: 11681
1075. aquak9
I'm remaining mute on that topic (groan-er)!

Now it's usually the mute people who are the smart ones, cause they spend more time listening than running their mouths!
Member Since: Posts: Comments:
TROPICAL CYCLONE ADVICE NUMBER 18
Issued by the BUREAU OF METEOROLOGY, DARWIN
at 8:00 am CST Monday 29 March 2010

A Cyclone WARNING continues for coastal and island communities from Milingimbi
to Port Roper, including Nhulunbuy and Groote Eylandt.

A Cyclone WATCH continues for coastal and island communities from Maningrida to
Milingimbi.

At 6:30 am CST Tropical Cyclone Paul, Category 2 was estimated to be 100
kilometres south of Nhulunbuy and 95 kilometres north northeast of Alyangula,
moving south at 4 kilometres per hour parallel to the coast.

The cyclone is currently moving slowly south parallel to the coast and is
expected to move inland later today.

DESTRUCTIVE WINDS with gusts to 130 kilometres per hour may develop between
Nhulunbuy and Numbulwar during today and Tuesday.

GALES with gusts to 110 kilometres per hour are currently being experienced
between NHULUNBUY and PORT ROPER, including GROOTE EYLANDT. GALES may extend
north to ELCHO ISLAND and west to MILINGIMBI later today and further west to
MANINGRIDA during Tuesday if the system takes a more northerly track.

A STORM TIDE is expected between CAPE SHIELD and PORT ROPER. Tides are likely to
rise significantly above the normal high tide, with DAMAGING WAVES and DANGEROUS
FLOODING today.

HEAVY RAIN may lead to localised flooding and significant stream rises over the
eastern Top End and northern Roper-McArthur Districts today and Tuesday.

Details of Tropical Cyclone Paul at 6:30 am CST:
.Centre located near...... 13.1 degrees South 136.7 degrees East
.Location accuracy........ within 30 kilometres
.Recent movement.......... towards the south at 4 kilometres per hour
.Wind gusts near centre... 130 kilometres per hour
.Severity category........ 2
.Central pressure......... 988 hectoPascals

The next advice will be issued by 11:00 am CST Monday 29 March.

Member Since: Posts: Comments:
Interesting that the forecast keeps TC Paul near the coastline for the next several days. Long range shows that the remnants of Paul could move back over the water later in the week as well.

Member Since: Posts: Comments:
Quoting aquak9:
Yet sadly so many smart people are so blind.


Well...there's dumb blind people, too.

I'm remaining mute on that topic (groan-er)!
Member Since: Posts: Comments:
After tonight and tomorrow...beautiful weather down here in our neck of the woods:

Local Text Forecast for
Lake Worth, FL (33461)

Mar 28 Tonight
Variable clouds with thunderstorms, especially late. A few storms may be severe. Low 72F. Winds SSE at 10 to 20 mph. Chance of rain 60%.

Mar 29 Tomorrow
Thunderstorms likely. High 73F. Winds SW at 15 to 25 mph. Chance of rain 80%. Rainfall possibly over one inch.

Mar 29 Tomorrow night
Partly cloudy. Low 52F. Winds W at 10 to 20 mph.

Mar 30 Tuesday
Abundant sunshine. Highs in the low 70s and lows in the low 50s.

Mar 31 Wednesday
Mix of sun and clouds. Highs in the mid 70s and lows in the upper 50s.

Apr 1 Thursday
Times of sun and clouds. Highs in the mid 70s and lows in the low 60s.

Apr 2 Friday
Plenty of sun. Highs in the mid 70s and lows in the mid 60s.

Apr 3 Saturday
Mix of sun and clouds. Highs in the mid 70s and lows in the low 60s.

Apr 4 Sunday
Times of sun and clouds. Highs in the mid 70s and lows in the low 60s.

Apr 5 Monday
Mostly cloudy. Highs in the mid 70s and lows in the low 60s.

Apr 6 Tuesday
Mix of sun and clouds. Highs in the mid 70s and lows in the low 60s.
Member Since: September 10, 2007 Posts: 0 Comments: 11681
1070. aquak9
barefoot please check your mail-
Member Since: Posts: Comments:
1069. aquak9
Yet sadly so many smart people are so blind.


Well...there's dumb blind people, too.
Member Since: Posts: Comments:
Earth to Skye...
Please report in as you can. That southerly cell on the red/green bl posted 1058. looked suspiciously cyclonic on SRV loop as it passed N of Melbourne.
Member Since: Posts: Comments:
1067. Patrap
Like in the Dark Ages,folks will dismiss what they cannot,or fail to understand..,even when presented with the data.

Some believe the World is still Flat and that we didnt Walk on the Moon as well,..but it makes the facts no different.

Earth has been round for 4.5 Billion Years now,man,..but a few Tens of Thousands..

We will be forgotten as easy as a Dream after awakening..




I like my trout fried,with Almonds,Lemon's and Butter,or "Trout Almondine",..

Yeah,Baby..!!
Member Since: July 3, 2005 Posts: 432 Comments: 131997
1066. ricderr
yep...now to watch the tail end just over sebring now as it goes over my neck of the woods
Member Since: Posts: Comments:
Looks like the storms are about to move off the coast.

MelbourneRadarLoop
Member Since: Posts: Comments:
1064. ricderr
nice to see all it takes is being in the process of getting a met degree and you're an expert....tonight...i'll stay at a holiday inn express...tomorrow i'll know it all
Member Since: Posts: Comments:
Quoting Jedkins01:
Don't worry, all the arrogant fools who continue to backup their global warming b.s. down the bitter end.

As for me, I'll just sit back, relax, grab a fishin pole, catch some trout, and watch as silly "intellectuals" waste time babbling and getting upset over something that never exists.


Honestly, its sad there are so many smart people that fall prey to arrogance. I think all scientists supporting global warming are FAR too smart to believe in something so foolish, lacking no scientific basis. The reason the believe it is blindness and foolishness because of their pride.

I'm in the process of a meteorology degree, and let me tell ya, this stuff is very, very hard, so I know how smart it takes to get where I'm going.

Yet sadly so many smart people are so blind.






Oh well, the truth ALWAYS comes out in the end. So have fun getting upset and arguing over something that doesn't even exist :)

If were so arrogant give us some evidence that disproves GW
That goes for people saying GW exists too I want facts not squabble
If I may interpret your post you said you're no weather expert and there are experts that think GW exists and they're fools
Also if you say you'll fight against GW to the bitter end wouldn't that be ignorant and arrogant? shouldn't you keep an open mind?
Member Since: Posts: Comments:
1062. Patrap
Troll for fish,save a worm..

LOL
Member Since: July 3, 2005 Posts: 432 Comments: 131997
Don't worry, all the arrogant fools who continue to backup their global warming b.s. down the bitter end.

As for me, I'll just sit back, relax, grab a fishin pole, catch some trout, and watch as silly "intellectuals" waste time babbling and getting upset over something that never exists.


Honestly, its sad there are so many smart people that fall prey to arrogance. I think all scientists supporting global warming are FAR too smart to believe in something so foolish, lacking no scientific basis. The reason the believe it is blindness and foolishness because of their pride.

I'm in the process of a meteorology degree, and let me tell ya, this stuff is very, very hard, so I know how smart it takes to get where I'm going.

Yet sadly so many smart people are so blind.





Oh well, the truth ALWAYS comes out in the end. So have fun getting upset and arguing over something that doesn't even exist :)
Member Since: Posts: Comments:
1060. xcool
Member Since: Posts: Comments:
1059. ricderr
so far no severe hail threat
Member Since: Posts: Comments:
1058. beell
Photobucket
Member Since: Posts: Comments:
Quoting Patrap:
Thats a Bad cell...and the Shuttle is on the Pad,,so the ET tank is subject to Hail in the current track of that cell.



It'll be STS-117 all over again.. poor Clay Anderson (he was on STS-117 also) lets hope no hail rains down on the shuttle, especially 8 days from launch.
Member Since: Posts: Comments:
About what time should the West Palm Beach area be affected?

Member Since: September 10, 2007 Posts: 0 Comments: 11681
according to NWS spokesperson on Ch 13, two loci of circulation; 65 to 70 mph winds with the southern one; the northern is weaker but could restrengthen as it gets closer to the coast.
Member Since: Posts: Comments:
Quoting wayne0224:
Stop with the global warming it has been the coldest year in 30 in south west florida climate changes every year get off the al gore band wangon our planet does its own thing not what al gore says it will do!!!


Like I always say…“So goes southwest Florida, so goes the planet”. I think Hee Haw’s cornfield is calling your name.
Member Since: September 10, 2007 Posts: 0 Comments: 11681
1053. Patrap


All LIVE video feeds from KSC just went down



Member Since: July 3, 2005 Posts: 432 Comments: 131997
1052. Ighuc
My goodness, we just had snow accumulations and frost most of last week and now we are scheduled to hit 80 on Thursday. Gotta love midwest springs... :)

Anyone have radar of the severe storms in the mid-Atlantic? Hope everyone is okay!
Member Since: Posts: Comments:
1051. Skyepony (Mod)
I'm were the circle with the cross in it is in that picture. Colvert is as close as I got to a basement.

Member Since: Posts: Comments:
1050. Patrap
Thats a Bad cell...and the Shuttle is on the Pad,,so the ET tank is subject to Hail in the current track of that cell.

Member Since: July 3, 2005 Posts: 432 Comments: 131997
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
550 PM EDT SUN MAR 28 2010

NCC025-071-097-119-159-282230-
/O.CON.KGSP.TO.W.0007.000000T0000Z-100328T2230Z/
GASTON NC-CABARRUS NC-MECKLENBURG NC-IREDELL NC-ROWAN NC-
550 PM EDT SUN MAR 28 2010

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 630 PM EDT FOR ROWAN...
SOUTHEASTERN IREDELL...NORTHERN MECKLENBURG...NORTHERN CABARRUS AND
EASTERN GASTON COUNTIES...

AT 547 PM EDT...LOCAL LAW ENFORCEMENT AND TRAINED SPOTTERS REPORTED
A TORNADO.
THIS TORNADO WAS LOCATED 1 MILE NORTH OF PAW CREEK...OR
7 MILES NORTHWEST OF CENTER CITY CHARLOTTE...MOVING NORTHEAST AT 40
MPH.

* LOCATIONS IMPACTED INCLUDE...
CROFT...
HUNTERSVILLE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS SITUATION! DAMAGE IS BEING REPORTED WITH THIS
TORNADO! MOBILE HOMES AND VEHICLES SHOULD BE ABANDONED IMMEDIATELY
FOR STURDIER SHELTER. OTHERWISE...DO NOT LEAVE YOUR HOME OR PLACE OF
BUSINESS! GO TO AN INTERIOR ROOM ON THE LOWEST LEVEL OF THE BUILDING.
IF CAUGHT OUTSIDE...SEEK OUT A LOW SPOT IN AN OPEN AREA AWAY FROM
ROADS. SHIELD YOUR HEAD FROM THE DANGERS OF FLYING DEBRIS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT SUNDAY EVENING
FOR NORTHEAST GEORGIA AND WESTERN NORTH CAROLINA AND CENTRAL SOUTH
CAROLINA.

&&

LAT...LON 3515 8101 3530 8113 3540 8103 3540 8095
3548 8095 3582 8060 3574 8043 3555 8020
TIME...MOT...LOC 2149Z 223DEG 35KT 3532 8092

$$
MCAVOY

Twister on the ground in North Carolina.
Member Since: Posts: Comments:
1048. Patrap
559
WFUS52 KMLB 282155
TORMLB
FLC009-282245-
/O.NEW.KMLB.TO.W.0026.100328T2155Z-100328T2245Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
555 PM EDT SUN MAR 28 2010

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* TORNADO WARNING FOR...
CENTRAL BREVARD COUNTY IN FLORIDA...
THIS INCLUDES THE CITIES OF...SATELLITE BEACH...PATRICK AIRFORCE
BASE...CAMP HOLLY FISH CAMP...

* UNTIL 645 PM EDT.

* AT 549 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 9 MILES
SOUTHWEST OF VIERA...OR 10 MILES NORTHWEST OF CAMP HOLLY FISH
CAMP...MOVING EAST AT 30 MPH. A SECOND AREA OF ROTATION WAS
LOCATED JUST WEST OF HOLLY FISH CAMP.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WEST
MELBOURNE...SUNTREE AND INDIAN HARBOUR BEACH

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING
PENNY SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS IN EXCESS OF 70
MPH.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A STRONG BUILDING ON
THE LOWEST FLOOR...IN AN INTERIOR ROOM SUCH AS A BATHROOM OR CLOSET.
KEEP AWAY FROM WINDOWS. GET UNDER A WORKBENCH OR OTHER PIECE OF
STURDY FURNITURE. USE BLANKETS OR PILLOWS TO COVER YOUR BODY.

EVACUATE MOBILE HOMES OR VEHICLES FOR MORE SUBSTANTIAL SHELTER. IF NO
SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH OR OTHER LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS. ABANDON YOUR VEHICLE IF THE
TORNADO IS NEARBY.
Member Since: July 3, 2005 Posts: 432 Comments: 131997
Sorry I should have known that. Is there some shelter, you don't want to gamble with nature.
Member Since: Posts: Comments:
1046. Patrap
NEXRAD Radar
Melbourne, Storm Relative Mean Radial Velocity 0.50 Degree Elevation Range 124 NMI

Member Since: July 3, 2005 Posts: 432 Comments: 131997
1045. ricderr
you know wayne....i'm not a true beliver that global warming is influenced enough by man as much as it is cyclical event...but idiot comment from bozos like you...make it hard to think we're on the same side
Member Since: Posts: Comments:
Quoting all4hurricanes:

hopefully that'll die out soon I still get in the basement though


Would be good advice if anybody around here in brevard county had basements. But you can't build them here, the water table is too high.

Its looking like the worst of the storm is going to go just south of me though. Not even raining here much yet, just lots of thunder.
Member Since: Posts: Comments:
1043. beell
Photobucket
Member Since: Posts: Comments:
1042. Patrap
Double trouble..Now 2 TVS returns



Member Since: July 3, 2005 Posts: 432 Comments: 131997
1041. Patrap
College of DuPage Meteorology
Severe Weather and Flash Flood Warnings
Note: This page will reload every 2 minutes. Warnings are listed with the most recent first.
NEW!! Click on the station ID to bring up list of recent severe weather statements.


TORNADO WARNING GREENVILLE-SPARTANBURG SC - KGSP 548 PM EDT SUN MAR 28 2010
TORNADO WARNING GREENVILLE-SPARTANBURG SC - KGSP 542 PM EDT SUN MAR 28 2010
SVR T-STORM WARNING GREENVILLE-SPARTANBURG SC - KGSP 529 PM EDT SUN MAR 28 2010
TORNADO WARNING MELBOURNE FL - KMLB 517 PM EDT SUN MAR 28 2010
TORNADO WARNING COLUMBIA SC - KCAE 459 PM EDT SUN MAR 28 2010
Member Since: July 3, 2005 Posts: 432 Comments: 131997
Yup you're in the line of fire.
Hope everyone's in and safe!
Member Since: Posts: Comments:
Quoting Skyepony:
Here's mine


Weather plug got ya'll unless I loose power




hopefully that'll die out soon I still get in the basement though
Member Since: Posts: Comments:
1038. Patrap
Keep ya head down skyepony..

Inbound Squall Line,Bow echo style..
Member Since: July 3, 2005 Posts: 432 Comments: 131997
1037. Skyepony (Mod)
Here's mine


Weather plug got ya'll unless I loose power



Member Since: Posts: Comments:
Quoting wayne0224:
Stop with the global warming it has been the coldest year in 30 in south west florida climate changes every year get off the al gore band wangon our planet does its own thing not what al gore says it will do!!!

One cold year in one place does not dis prove GW I have never read a book or listened to a speech my Al Gore there is just too much evidence for GW, most posts against GW I see here are it's cold here and Al Gore is wrong, very few provide actual evidence.
Member Since: Posts: Comments:
I was just noticing that, Skye.

Link
Member Since: Posts: Comments:
1031. Skyepony (Mod)
The cell causing the tornado warning for south Brevard is headed right at me. Lets hope that shifts a little..
Member Since: Posts: Comments:
Stop with the global warming it has been the coldest year in 30 in south west florida climate changes every year get off the al gore band wangon our planet does its own thing not what al gore says it will do!!!
Member Since: Posts: Comments:
1028. Skyepony (Mod)
Fights break out over scarce drinking water in China
Choi Chi-yuk
Mar 29, 2010
The PLA Air Force dispatched aircraft to trigger artificial rain to ease the worst drought in a century that has seen dozens of fights break out over drinking water in the southwest of the country....
Member Since: Posts: Comments:
Quoting altesticstorm10:

JFV?


I'm a Floridian. Next time JFV comes 'round these parts, I'm bringing out the shotgun.
Member Since: Posts: Comments:
1026. xcool
Weathertap SATELLITE BEST update time i think is 5 minutes
Member Since: Posts: Comments:

Viewing: 1076 - 1026

Page: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25Blog Index

Top of Page

About

Jeff co-founded the Weather Underground in 1995 while working on his Ph.D. He flew with the NOAA Hurricane Hunters from 1986-1990.

JeffMasters's Recent Photos

Carrot Nose in Danger
Deep Snow in Brookline, MA
Sunset at Fort DeSoto
New Years Day Sunset in Death Valley