Wunderground launches new Local Climate Change section

By: Dr. Jeff Masters , 6:10 PM GMT on April 20, 2012

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In honor of Earth Day on Sunday, wunderground has launched a new Climate Change Center, which gives people resources to understand how the climate is changing both globally and in their local neighborhoods. I am particularly pleased with our Local Climate Change feature, which allows one to see how temperature and precipitation have changed over the past 100+ years at the nearest station with a long period of measurements. Predictions from climate models on what the next 100 years may bring are overlaid for each station. Data for most U.S. stations goes back to 1895; we have data for a few stations in Europe that extend back to the 1700s. Berlin has the longest period of record in this database, with data back to 1702.


Figure 1. Screenshot of the Local Climate Change page for Washington, DC. Measured temperatures since 1820 are shown in grey. By clicking on the "Show post-1900 trend:" box, we see that the trend since 1900 has been for an increase in temperature of 1.5°C (2.7°F) per century. Moving the thin vertical red line over the image using the mouse shows that the warmest year on record in Washington D.C. was 1991. Predictions for a future with low emissions of heat-trapping gases like carbon dioxide are shown in yellow; the high emissions prediction is shown in red. Separate tabs are available to examine precipitation and snow.

Skeptical?
Also included in the new Climate Change Center is a section addressing the common skeptical arguments made against climate change. We offer three levels of explanation. The "Basic" level is the default, but one can also see more technical in-depth discussions by clicking on the "See All Explanation Levels" link. The material was developed by physicist John Cook for his excellent skepticalscience.com web site, which is widely referenced in the climate science communication community.


Video 1. I'm featured in this video on extreme weather and climate change done by veteran videographer Peter Sinclair for the Yale forum on Climate Change and the Media this month. I'm also featured in Part 1 of this series. Our new Climate Change Center has a section for climate change videos, which includes a twice-monthly feature from GreenTV detailing the world's notable wild weather events of the past two weeks.

Earth: the Operator's Manual airs Sunday night
Penn State climate scientist Dr. Richard Alley hosts parts II and III of Earth: the Operator's Manual on PBS beginning at 7pm Sunday, April 22--Earth Day. Part I of this excellent series aired in April 2011. The series gives an overview of climate change, but primarily focuses on what we can do to help slow down climate change though smart energy choices. Dr. Alley, a registered Republican, geologist, and former oil company employee, 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. Dr. Alley is an excellent and engaging speaker, and I highly recommend listening to his 45-minute keynote speech, "The Biggest Control Knob: CO2 in Earth's Climate History", given at the 2010 American Geophysical Union meeting, via this 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.

Have a great weekend, everyone, and I'll be back Monday with a new post. I'd like to thank Wunderground meteorologist, Angela Fritz for spearheading the creating the new Climate Change Center; it's a product I'll be referring to frequently in the future, and one we'll be updating in the coming months with data on local sea level rise, fire risk, and drought.

Jeff Masters

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Quoting Patrap:
For a lil idea of how cool the air behind the backside coming down is..


for NOLA tonight..

Saturday Night

Partly cloudy in the evening, then clear. Low of 55F. Windy. Winds from the NNW at 20 to 25 mph with gusts to 35 mph.


Our low here tonight is supposed to be 50, our high supposed to be 70. I have a feeling that with our high at 56, it will be colder than 50 tonight.


Heya Grothar!
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Quoting LargoFl:
lets see if this works..........Link


That's not a live cam like the other one. I like to bookmark the live ones and that one from Ft Lauderdale was a good one (realtime)
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Quoting bappit:
@685 Those are some interesting echoes ringed up around Tampa. What causes that Grothar?


Nothing, it is just the way the radar is reading the segments. They radiate out of the center. Doesn't mean anything.
Member Since: July 17, 2009 Posts: 63 Comments: 23727
For a lil idea of how cool the air behind the backside coming down is..


for NOLA tonight..

Saturday Night

Partly cloudy in the evening, then clear. Low of 55F. Windy. Winds from the NNW at 20 to 25 mph with gusts to 35 mph.
Member Since: July 3, 2005 Posts: 415 Comments: 125630
Quoting Grothar:


Is that a "Bow Echo."... on #685 above Tampa (NW)
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I'm really starting to doubt this going to live up to its expectation, the first area of convection overall is dying, and the second 1 is failing to develop, will there even be widespread 1 inch amounts?


I mean yes there are still some strong cells moving through Central Florida now but when it was way out in the gulf it was a very powerful squall line with thousands of lightning strikes and 40000 to 50000 ft storm tops.


If you get what I'm saying?


I'm not saying this won't still turn out to be what it is supposed to, but so far it's looking a little iffy.



I'm really shocked out how much this line as weakened with as strong this low is and all the moisture/dynamics in place. Even when we have everything we need for a huge rain event we still are getting less than we should?

What ever happened to Florida being a wet Climate? lol


I'm being a little over dramatic I know, I'm just frustrated how we continue to see things fall short of expectation. Unless a powerful squall line redevelops withe cold front and moves on shore, and actually stays strong, I won't buy this event.

Despite we have all the dynamics, upper support and moisture for several inches of rain and numerous intense thunderstorms cells, it isn't looking nearly as impressive as it was this morning...
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Quoting Patrap:
Thats one long tongue of cool air from Canada to the Low,..


It's a whole 56 degrees with a wind chill of 51 here in my part of Louisiana, feels like mid January. Went to Lowes and was so glad to find I had a sweater still in the SUV when I was standing outside to wait for them to do the loading. I'm on Spring Break this next week, so hope it warms up a little!
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lets see if this works..........Link
Member Since: August 6, 2011 Posts: 4 Comments: 33389
Well what do you know? All the heavy activity that was approaching the coast southwest of Pinellas is dying before it gets to me and redeveloping east of me. What a shocker...
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Quoting PedleyCA:


Is there a link for this???
here you go....http://myfoxmedia.com/webcams/clearwater.jpg
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Member Since: July 3, 2005 Posts: 415 Comments: 125630
Quoting LargoFl:
if this pans out to be where the next low comes in tonight, we may be in a world of trouble huh


Some could be severe and some heavy downpours. The locals are putting out a few flood advisories now.
Member Since: July 17, 2009 Posts: 63 Comments: 23727
Quoting LargoFl:
This is how it looks right now by me..................


Is there a link for this???
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Quoting bappit:
This is definitely on topic for this blog. It is a little about math, God and nonsense. It is also about education which has been bent one way or another on here a time or two I tell you.

Daniel Pinkwater on Pineapple Exam: ‘Nonsense on Top of Nonsense’


"That really is why it’s hilarious on the face of it that anybody creating a test would use a passage of mine, because I’m an advocate of nonsense."


You are right on this one. That is hilarious.
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Thats one long tongue of cool air from Canada to the Low,..
Member Since: July 3, 2005 Posts: 415 Comments: 125630
yessss, finally some good rain..........its here now...SHORT TERM FORECAST
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
220 PM EDT SAT APR 21 2012

FLZ042-043-048>050-055-060-GMZ830-850-853-870-873 -211930-
CITRUS-SUMTER-HERNANDO-PASCO-PINELLAS-MANATEE-SAR ASOTA-
TAMPA BAY WATERS-TARPON SPRINGS TO SUWANNEE RIVER OUT 20 NM-
ENGLEWOOD TO TARPON SPRINGS OUT 20 NM-
TARPON SPRINGS TO SUWANNEE RIVER OUT 20 TO 60 NM-
ENGLEWOOD TO TARPON SPRINGS OUT 20 TO 60 NM-
220 PM EDT SAT APR 21 2012

.NOW...
NUMEROUS SHOWERS AND THUNDERSTORMS WERE BEGINNING TO MOVE ONSHORE
ALONG WEST CENTRAL COASTAL COUNTIES FROM LEVY...SOUTH THROUGH THE
TAMPA BAY AREA...TO LEE COUNTY. THE STRONGER ACTIVITY WAS LOCATED
OVER THE NORTHERN PART OF THE COASTLINE BETWEEN LEVY AND MANATEE
COUNTIES. EXPECT PERIODS OF HEAVY RAINFALL...WIND GUSTS TO 35 MPH
...DANGEROUS EXCESSIVE LIGHTNING AND POSSIBLE SMALL HAIL WITH
THESE STORMS.

$$

RHEA
Member Since: August 6, 2011 Posts: 4 Comments: 33389

Eastern Conus Sector (Infrared Channel)
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Member Since: July 3, 2005 Posts: 415 Comments: 125630
Member Since: August 6, 2011 Posts: 4 Comments: 33389
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
215 PM EDT SAT APR 21 2012

FLZ039-211900-
LEVY-
215 PM EDT SAT APR 21 2012

...STRONG THUNDERSTORMS WILL AFFECT CENTRAL LEVY COUNTY...

NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATES A STRONG
THUNDERSTORM LOCATED 6 MILES SOUTHEAST OF OTTER CREEK...OR 15 MILES
SOUTH OF BRONSON...MOVING NORTH AT 20 MPH...AND WILL AFFECT
LEBANON...OTTER CREEK...BRONSON AND CHIEFLAND...UNTIL 300 PM EDT.

GUSTY WINDS 35 TO 45 MPH MAY OCCUR. THIS STORM MAY PRODUCE PEA SIZE
HAIL.

&&

LAT...LON 2959 8277 2957 8275 2957 8266 2954 8265
2953 8255 2949 8255 2947 8252 2921 8252
2920 8253 2915 8253 2915 8284 2916 8290
2952 8299 2960 8293
TIME...MOT...LOC 1815Z 175DEG 19KT 2926 8273

$$
Member Since: August 6, 2011 Posts: 4 Comments: 33389
Quoting hydrus:
I believe that New England could see some strong thunderstorms from this system..

I hope you're right!
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Member Since: August 6, 2011 Posts: 4 Comments: 33389
Quoting barbamz:
http://www.seesarasotalive.com/point-of-rocks
Looks rather stormy ...
And hello from Germany, Barb.
hello!
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@685 Those are some interesting echoes ringed up around Tampa. What causes that Grothar?
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http://www.seesarasotalive.com/point-of-rocks
Looks rather stormy ...
And hello from Germany, Barb.
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Quoting Grothar:


Seems like the storms are re-organizing as they hit land... That's how strong the instability is.
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Quoting reedzone:


What is good about this forecaster? Just wondering...
He is thorough and I don't end up with questions in my mind after reading... like, for tors and storms in general, What might inhibit or strengthen them.

When you read the next discussion, it will follow up on points made here. Presuming there is a watch issued.

Roger Edwards will teach you words you have not heard before. Also something that might be of interest to you, he wrote a way cool research paper on tornadoes produced by land-falling tropical cyclones.

In general, reading the MCDs helps me develop a picture of what's happening and what forces are behind what could happen. As you know, what's happening right now will affect what happens this eve and on into the night.
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All the heavy rain is going over the water where it is wet enough.

Member Since: July 17, 2009 Posts: 63 Comments: 23727
Member Since: July 3, 2005 Posts: 415 Comments: 125630
Quoting Grothar:
if this pans out to be where the next low comes in tonight, we may be in a world of trouble huh
Member Since: August 6, 2011 Posts: 4 Comments: 33389
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ok, winds really swaying the tree's now,first few drops of rain coming down..interesting few hours coming now..be safe everyone
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Member Since: July 17, 2009 Posts: 63 Comments: 23727

Gale Warning valid until April 22 10:00am CDT
URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE NEW ORLEANS LA
1055 AM CDT SAT APR 21 2012


...SMALL CRAFT ADVISORY CONDITIONS EXPECTED OVER THE COASTAL
WATERS THIS AFTERNOON... ...GALE CONDITIONS EXPECTED TONIGHT AND
SUNDAY MORNING...

.THE COMBINATION OF A COLD FRONT PUSHING THROUGH THE AREA ALONG
WITH A DEVELOPING SURFACE LOW THAT IS EXPECTED TO MOVE SLOWLY
EASTWARD ACROSS THE NORTHERN GULF WILL LEAD TO INCREASED WINDS
AND SEAS FOR ALL OF THE AREA COASTAL WATERS TODAY INTO SUNDAY.
FREQUENT GALE FORCE WINDS GUSTS ARE EXPECTED THIS EVENING THROUGH
MID MORNING SUNDAY.

GMZ530-532-534-220000-
/O.EXT.KLIX.SC.Y.0027.120421T1555Z-120422T0000Z/
/O.CON.KLIX.GL.W.0002.120422T0000Z-120422T1500Z/
LAKE PONTCHARTRAIN AND LAKE MAUREPAS-MISSISSIPPI SOUND-
LAKE BORGNE-
1055 AM CDT SAT APR 21 2012

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 7 PM CDT THIS
EVENING...
...GALE WARNING REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 10 AM
CDT SUNDAY...

* WINDS...NORTH WINDS 20 TO 25 KNOTS ARE EXPECTED THIS
AFTERNOON. WINDS WILL INCREASE TO 25 TO 30 KNOTS WITH FREQUENT
GUSTS OF 35 TO 40 KNOTS TONIGHT AND SUNDAY MORNING.

* WAVES/SEAS...WAVES WILL INCREASE TO 3 TO 5 FEET THIS AFTERNOON
AND 4 TO 6 FEET TONIGHT AND SUNDAY MORNING ACROSS THE TIDAL
LAKES AND SOUNDS. SEAS IN THE COASTAL WATERS WILL RISE TO 5 TO
7 FEET OVER THE NEAR SHORE WATERS AND 7 TO 10 FEET IN THE
WATERS BEYOND 20 NAUTICAL MILES FROM SHORE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A GALE WARNING MEANS WINDS OF 34 TO 47 KNOTS ARE IMMINENT OR
OCCURRING. OPERATING A VESSEL IN GALE CONDITIONS REQUIRES
EXPERIENCE AND PROPERLY EQUIPPED VESSELS. IT IS HIGHLY
RECOMMENDED THAT MARINERS WITHOUT THE PROPER EXPERIENCE SEEK SAFE
HARBOR PRIOR TO THE ONSET OF GALE CONDITIONS.

A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OF 20 TO 33 KNOTS
ARE EXPECTED TO PRODUCE HAZARDOUS WAVE CONDITIONS TO SMALL CRAFT.
INEXPERIENCED MARINERS...ESPECIALLY THOSE OPERATING SMALLER
VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$
Member Since: July 3, 2005 Posts: 415 Comments: 125630
Quoting MAweatherboy1:
I feel like a lot of people on here are from Florida.


Pretty much! LOL


Light rain here in Broward County.
My house has received 1.75" in the past 24 hours
and more to come I am sure.


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The GFS develops a fairly strong low in a week, but looks to be a slow mover..
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Hudson beach up in pasco county north of me...........
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Quoting ClimateChange:
More global warming volatility. Possible major spring snowstorm in the eastern Great Lakes, upper Ohio Valley, and parts of Appalachia. Widespread tree damages and power outages look likely. In addition, lake enhancement is probable given record daily lake surface temperatures in the lower 50s, owing to the mild winter and unprecedented early spring warmth.
When?
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I believe that New England could see some strong thunderstorms from this system..
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here is st.pete beach........................
Member Since: August 6, 2011 Posts: 4 Comments: 33389
More global warming volatility. Possible major spring snowstorm in the eastern Great Lakes, upper Ohio Valley, and parts of Appalachia. Widespread tree damages and power outages look likely. In addition, lake enhancement is probable given record daily lake surface temperatures in the lower 50s, owing to the mild winter and unprecedented early spring warmth.
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Member Since: August 6, 2011 Posts: 4 Comments: 33389
..cool,pic,we always love da pics!

One can see the banding easily.

I'll get some High Winds tonight on Video as we going out to S Shore Lake Pontchartrain.
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GOES RSO Loop
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About JeffMasters

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