Unprecedented Cut in Colorado River Flow Ordered, Due to Drought

By: Dr. Jeff Masters , 3:20 PM GMT on August 20, 2013

For the first time in history, the U.S. government has ordered that flow of Colorado River water from the 50-year-old Glen Canyon Dam be slashed, due to a water crisis brought about by the region's historic 14-year drought. On Friday, the Federal Bureau of Reclamation--a division of the Department of Interior that manages water and electric power in the West--announced that it would cut water released from Lake Powell's Glen Canyon Dam by 750,000 acre-feet in 2014. An acre-foot is the amount of water that will cover an acre of land one foot deep; 750,000 acre-feet is enough water to supply at least 750,000 homes for one year. The flow reduction will leave the Colorado River 9% below the 8.23 million acre feet that is supposed to be supplied downstream to Lake Mead for use in California, Nevada, Arizona and Mexico under the Colorado River Compact of 1922 and later agreements. "This is the worst 14-year drought period in the last hundred years," said Upper Colorado Regional Director Larry Walkoviak in a Bureau of Reclamation press release.

In the winter of 2005, Lake Powell reached its lowest level since filling, an elevation 150' below full pool. Lake levels recovered some in during 2005 - 2011, but the resurgence of severe to extreme drought conditions have provoked a steep decline in 2012 and 2013, with the lake falling 35' over the past year. As of August 18, 2013, Lake Powell was 109' below full pool (45% of capacity), and was falling at a rate of one foot every six days.


Figure 1. Satellite comparisons of water levels in Arizona and Utah's Lake Powell between 1999 and 2013 show a huge reduction in the amount of water in the lake. Image credit: NASA Earth Observatory.


Figure 2. From October 1, 2012 - July 31, 2013, precipitation over the Colorado River Watershed was about 80% of average. Image credit: Colorado Basin River Forecast Center.

Las Vegas' Water Supply, Lake Mead, Near a Record Low
Downstream of Lake Powell lies Lake Mead, filled in 1936 when Hoover Dam was completed. Lake Mead supplies Las Vegas with ninety percent of its drinking water, and the water level of Lake Mead is expected to fall by eight feet in 2014 due to the lower water flow levels out of Lake Powell ordered on Friday. Lake Mead has fallen by 100 feet since the current 14-year drought began in 2000, and the higher of the two intake pipes used to supply Las Vegas with water from the lake is in danger of running dry. As a result, a seven-year, $800 million project is underway by the Southern Nevada Water Authority to build a third intake pipe that will tap the deepest part of the reservoir. This so-called "third straw" is scheduled to be available late in 2014, which may be cutting it close, if the Colorado River watershed experiences another year of drought as severe as in 2012 - 2013. Southern Nevada has done well to reduce water usage, though--the region's annual water consumption decreased by nearly 29 billion gallons between 2002 and 2012, despite a population increase of more than 400,000 during that span.


Figure 3. Lake Mead water levels from 1938 - 2013 in July show a precipitous drop since drought conditions gripped the Western U.S. in 2000. The Lake Mead photo was taken by wunderphotographer LAjoneson June 29, 2007, when the lake had a "bathtub ring" 109' tall. Water level data from The Bureau of Reclamation.


Figure 4. Workers handle the main drive sections of the tunnel boring machine that is drilling a 3-mile long tunnel through solid rock to supply Las Vegas with water from Lake Mead. The new intake tunnel is designed to maintain the ability to draw upon Colorado River water at lake elevations as low as 1,000 feet above sea level. The lake already has two intake pipes, and the higher of these will go dry when the lake level hits 1050' - 1075'. As of August 2013, the Lake Mead water level was 1106' above sea level, which is 114' below full pool, but 24' above the record low water level of 1081' set in November 2010. Image credit: Southern Nevada Water Authority.

Drought conditions worsen over Southwest U.S. in August
According to the U.S. Drought Monitor, the Western U.S. drought peaked in July 2002, when 79% of the West was in at least severe drought, and 45% of the region was in the two highest categories of drought--extreme to exceptional. However, drought conditions have been steadily intensifying this summer. The August 13, 2013 Drought Monitor report showed that drought conditions in the Western U.S. are now the worst since 2004, with 78% of the West in at least severe drought, and 20% in the two highest categories of drought, extreme and exceptional. The latest U.S. Seasonal Drought Outlook, issued on August 15, calls for drought to remain entrenched over the large majority of the Western U.S. through the end of November.


Figure 5. As of August 13, 2013, severe to exceptional drought gripped nearly all of the Colorado RIver's watershed in Arizona, Utah, New Mexico, Wyoming, California, and Colorado. Image credit: NOAA/NESDIS/NCDC.

Causes of the great Western U.S. drought
It is well-known that natural variations in sea surface temperature patterns, such as seen from the El Niño/La Niña oscillation, can influence storm tracks and can cause prolonged periods of drought. These natural variations likely had a hand in causing the great 2000 - 2013 Western U.S. drought. However, changes in the amount of sea ice covering the Arctic can also have a major impact on Northern Hemisphere atmospheric circulation patterns. We must consider if global warming, which has led to a 50% decline in summer Arctic sea ice extent since 1979, may be altering storm tracks and contributing to drought. In 2004, Lisa Sloan, professor of Earth sciences at UC Santa Cruz, and her graduate student Jacob Sewall published an article in Geophysical Research Letters, Disappearing Arctic sea ice reduces available water in the American west. An accompanying news release explained that their climate models found "a significant reduction in rain and snowfall in the American West” as a result of Arctic sea ice loss:

What they found was a change in atmospheric circulation patterns that caused a small northward shift in the paths of winter storms over western North America. This shift in winter storm tracks resulted in significantly reduced winter precipitation from southern British Columbia to the Gulf of California. In some areas, average annual precipitation dropped by as much as 30 percent. The reductions were greatest along the West Coast, with lesser changes further inland. But even as far inland as the Rocky Mountains, winter precipitation fell by 17 percent.

The sea ice acts like a lid over the ocean surface during the winter, blocking the transfer of heat from the ocean to the atmosphere, Sewall explained. Where the sea ice is reduced, heat transfer from the ocean warms the atmosphere, resulting in a rising column of relatively warm air. The shift in storm tracks over North America was linked to the formation of these columns of warmer air over areas of reduced sea ice in the Greenland Sea and a few other locations.


A follow-up paper by Dr. Sewall in 2005, "Precipitation Shifts over Western North America as a Result of Declining Arctic Sea Ice Cover: The Coupled System Response", used a more sophisticated modeling technique but confirmed the results of the 2004 paper. In a June 2013 interview with climateprogress.org, Dr. Sewall commented:

"I think the hypothesis from 2004 and 2005 is being borne out by current changes. The only real difference is that reality is moving faster than we thought/hoped it would almost a decade ago."


Figure 6. The area of the Western U.S. in drought peaked during 2002 - 2004, but during 2013 has been approaching levels not seen since 2004. Image credit: U.S. Drought Portal.

Western North America drought of 2000 - 2004 the worst in over 800 years
The Colorado River's water woes are due to an extraordinary 14-year drought that began in 2000, which peaked during 2000 - 2004. A 2012 study titled, Reduction in carbon uptake during turn of the century drought in western North America, found that the 2000 - 2004 drought was the most severe Western North America event of its kind since the last mega drought over 800 years ago, during the years 1146 - 1151. The paper analyzed the latest generation of climate models used for the 2013 IPCC report, which project that the weather conditions that spawned the 2000 - 2004 drought will be the new normal in the Western U.S. by 2030, and will be considered extremely wet by the year 2100. If these dire predictions of a coming "megadrought" are anywhere close to correct, it will be extremely challenging for the Southwest U.S. to support a growing population in the coming decades.


Figure 7. Normalized precipitation over Western North America (five-year mean) from 22 climate models used to formulate the 2013 IPCC report, as summarized by Schwalm et al., 2012, Reduction in carbon uptake during turn of the century drought in western North America. The horizontal line marks the precipitation level of the 2000 - 2004 drought, the worst of the past 800 years. Droughts of this intensity are predicted to be the new normal by 2030, and will be considered an outlier of extreme wetness by 2100. The paper states: "This impending drydown of western North America is consistent with present trends in snowpack decline as well as expected in-creases in aridity and extreme climate events,including drought, and is driven by anthropogenically forced increases in temperature with coincident increases in evapotranspiration and decreases in soil moisture. Although regional precipitation patterns are difficult to forecast, climate models tend to underestimate the extent and severity of drought relative to available observations. As such, actual reductions in precipitation may be greater than shown. Forecasted precipitation patterns are consistent with a probable twenty-first century megadrought." Image credit: Schwalm et al., 2012, Reduction in carbon uptake during turn of the century drought in western North America, Nature Geoscience 5, 551-555, Published online 29 JULY 2012, DOI: 10.1038/NGEO1529, www.nature.com/naturegeoscience.

Related posts
Lessons from 2012: Droughts, not Hurricanes, are the Greater Danger, my November 2012 post.

National Geographic has an excellent interactive satellite image that shows the difference in Lake Powell water levels between 1999 and 2013.

How Two Reservoirs Have Become Billboards For What Climate Change Is Doing To The American West, August 12, 2013 climateprogress.org post by Tom Kenworthy.

Scientists Predicted A Decade Ago Arctic Ice Loss Would Worsen Western Droughts. Is That Happening Already?, June 2013 post by Joe Romm at climateprogress.org.

Twenty Cities At Risk of Water Shortages, August 14, 2013 wunderground news post by Nick Wiltgen

References
Sewall, Jacob O., 2005, Precipitation Shifts over Western North America as a Result of Declining Arctic Sea Ice Cover: The Coupled System Response, Earth Interact., 9, 1–23. doi: http://dx.doi.org/10.1175/EI171.1

Sewall, J.O., and L.C. Sloan, 2004, Disappearing Arctic sea ice reduces available water in the American west, Geophys. Res. Lett., 31, L06209, doi:10.1029/2003GL019133. Accompanying news release.

Jeff Masters

Lake Mead - low water (clicks4fun)
Colorado River has been struggling to survive. Predictions of its future are grim in the headlines. Hopefully scientists will figure out how to resolve this bad situation.
Lake Mead - low water
Storm Clouds over Lake Powell, Glen Canyon NRA (catjuice)
Lake Powell, Glen Canyon National Recreation Area, AZ
Storm Clouds over Lake Powell, Glen Canyon NRA

Reader Comments

Comments will take a few seconds to appear.

Post Your Comments

Please sign in to post comments.

Log In or Join

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: 910 - 860

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 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32Blog Index

Quoting 908. redwagon:


Do your ... 'ears' hang low do they wobble two and fro can you tie them in a knot can you tie them in a bow?



It seems I remember a similar song from my Boy Scout days.
Member Since: July 17, 2009 Posts: 75 Comments: 30829
So Its quiet, poll time

What City do you think is most unprepared for a Hurricane strike?
a. Charleston SC
b. Providence RI
c. VA Beach/Hampton Roads
d. Corpus Christi, TX
e. other

Which City is the most prepared?
a. New Orleans
b. Miami
c. Houston
d. New York
e. other
Member Since: Posts: Comments:
Quoting 895. Grothar:


Do your ... 'ears' hang low do they wobble two and fro can you tie them in a knot can you tie them in a bow?
Member Since: Posts: Comments:
906. JLPR2
Definitely not what I expected from Pewa.

Member Since: Posts: Comments:
Quoting 872. Tazmanian:


Plzs read back a few pages and you will no all there is on it
Thanks, but we really just want to know what YOU think about the blob. Will the MJO kill it? Will this one affect Portugal, etc...?
Member Since: Posts: Comments:
EP, 94, 2013082100, , BEST, 0, 144N, 1101W, 25, 1007, LO, 34, NEQ, 0, 0, 0, 0, 1009, 150, 80, 0, 0, E, 0, , 0, 0, INVEST, M,
Member Since: July 21, 2011 Posts: 83 Comments: 7167
Quoting 899. BaltimoreBrian:


Check out my blog for my sources :)


Hope you know that I did not intend that as an attack against you! More against the "experts" who support their theories by citing either! I lurk here often, and know that you have good stuff! :)
Member Since: Posts: Comments:
Quoting 896. moonlightcowboy:


"She will be on as the morning meteorologist from 7-8:30am Eastern (and also 11am the rest of this week).

Says she it's exciting to help get a new station off the ground and aid in getting (the) weather department going! And, that it doesn't mean she's left the Reserves."
(paraphrased)

Wish her the best, especially considering the ordeal with The Weather Channel.
Great! She seems like a great soul and person! Not to mention a Meteorologist !!!
Member Since: Posts: Comments:
I wish I had a big ol' ice cold refreshing alcoholic beverage right about now. They just won't allow us to drink at work. What a drag.
Member Since: Posts: Comments:
Quoting 891. ProphetessofDoom:


I would imagine that if you are depending upon either Fox or CNN for your science news, then you really don't have that deep of an interest in science!


Check out my blog for my sources :)
Member Since: Posts: Comments:
.
Member Since: Posts: Comments:
Quoting 887. overwash12:
They might give MSNBC a run for their money!


"She will be on as the morning meteorologist from 7-8:30am Eastern (and also 11am the rest of this week).

Says it's exciting to help get a new station off the ground and aid in getting (the) weather department going! And, that it doesn't mean she's left the Reserves."
(paraphrased)

Wish her the best, especially considering the ordeal with The Weather Channel.
Member Since: Posts: Comments:
Member Since: July 17, 2009 Posts: 75 Comments: 30829
Quoting mitthbevnuruodo:


it's all irrelevant. We shouldn't be polluting and poisoning the world, at our lazy whim, whether GW is man made or not...whether temps anywhere, land or sea rise or not. There is no sense in polluting ourselves and our food and our planet...when we have technology for renewable energy and technology for not wasting fresh water etc. I can't see any good arguement for it, unless someone is making money from industries that help poison the world. I know it's hard if it's not impacting someone personally to care sometimes. But it's our home...and even if cause it's not immediate, our children and grandchildrens home. Unless greed and slefishness are that strong, why do things to ruin it for them even? It's not a matter of left or right, it's a matter of a healthy, clean world...for all people, animals, plants and oceans. There's no need in this day and age to pollute ourselves. Even China had the money and knowhow, to let their growth be guided by clean resources. But on the cheap, as with many places, they chose not to. They had a choice too, technology was there...just wasn't the quickest and easiest option. Makes me sad they've been as money grubbing and careless as anyone else. Commies can be just the same as the west I suppose, lining the pockets of those that matter to them.

Anyway, after 1am here, so off to bed. Sorry if ranting a bit. But anything backing things that hurt the environment, when so uneeded, really annoys me. Like I say...no matter what political affiliation...can't see how anyone can think it's ok to readily pollute our homes, when it doesn't have to be that way


1. I saw nowhere in the UK Met paper where they advocated pollution of any kind.

2. I'm of the opinion that, if the UK Met felt the subject was worthy of a 25 page pare, it must have some importance.

3. I don't think any rational person is in favor of any pollution or damage to the environment that can be reasonably avoided.

4. I am sufficiently convinced that mauch of the climate change we've seen is human caused. I don't really need to be convinced of that. What I'd like to see now are solutions that don't bankrupt the developed world, allow the developing world some of the pleasures and advantages of the developed world, and don't include "It doesn't matter, we're all going to die anyway". If that's truly the case, there is no discussion of this problem worth having.
Member Since: Posts: Comments:
Quoting 830. Patrap:
NWD Trailer - The American Southwest: Are We Running Dry?

Published on Apr 29, 2013

newworlddistro.com


Nearly every state in the American Southwest is affected by a water crisis and is struggling with record dry conditions. On the heels of the American Southwest's drought, and in an effort to raise awareness, The Chronicles Group with support from grants from the California Water Association, the Metropolitan Water District of Southern California, the Southern Nevada Water Authority and other public and private entities, Vegas PBS will present The American Southwest: Are We Running Dry? directed, written, and produced by Jim Thebaut, president of The Chronicles Group, a Los Angeles based non-profit public information/education film production company.

Featuring narration from Emmy® Award-winning actress Jane Seymour, The American Southwest: Are We Running Dry? is a definitive look at how the water crisis affects the American Southwest states and its escalating economic toll.

From the White House to the House of Representatives, Jim Thebaut interviews key thought leaders for an intelligent and informed discussion about the evolving water crisis. Thebaut filmed at diverse locations including the Navajo and Hopi reservations, on Capitol Hill and in Las Vegas for an absorbing and contemplative discussion about conservation, water reuse, desalination, unprecedented population growth and future water policies. Interviews with key members of Congress include Sens. Jon Kyl (Ariz.), Ken Salazar (Colo.), and Pete Domenici and Jeff Bingaman (N.M.), and U.S. Reps. Mary Bono (Palm Springs) and Jim Costa (Fresno). An interview with Dr. Gene Whitney, science advisor to President Bush, also is featured in this impartial and balanced documentary.




The American Southwest: Are We Running Dry? gives audiences an in-depth awareness and education of the water crisis in the United States. Viewers learn about land use planning and the water needs of cities in the Southwest, and how climate change may impact water levels on vital sources such as Lake Powell, Hoover Dam's Lake Mead, the Sacramento-San Joaquin River Delta system, the Rio Grande and the Colorado River.


Greenery is pretty much a status symbol in So Calif. If you have a nice, green lawn and lush garden...shows you're well off enough not to care about any water prices or droughts. And image is SO much there, especially in So Calif...especially in places like that. Too many people are too worried about that look of status, to care about drought or conserving water. So long as they look well off. And I reckon part of why, it would be a hard HARD sell to get people to use treated water. Most would rather another tunnel to transport water, than using treated water.

Obvs not everyone. Even the people who now live in the house I grew up at, have landscaped the yard (which is huge) with native and desert plants, was so happy to see that
Member Since: Posts: Comments:
Quoting 762. bjrabbit:
Hey Doc: Interesting article, but going back to the Arctic sea ice topic...I notice you haven't had any panicky articles about the ice for THIS year...mmmm could it be that there was plenty of ice this year?

Bert


No. It just hasn't been a record loss year, which is a nice change considering the alarming pace of recent ice loss. In fact, a rebound year was expected after the heavy loss from 2012. Thankfully the unusually cloudy and cool weather at the pole managed to keep ice loss to slower pace this year.

But don't get the wrong idea. The ice pack is still very much below normal. And the condition of the ice that remains is pretty miserable. Most of the pack is shattered and there's even a hole that's opening at the pole. Not some crack or polyna but a big expanse of open ocean.
Member Since: Posts: Comments:
Quoting 878. BaltimoreBrian:
Xyrus, Fox News has a half decent science page. In contrast to CNN which does not have a science page at all.


I would imagine that if you are depending upon either Fox or CNN for your science news, then you really don't have that deep of an interest in science!
Member Since: Posts: Comments:
I am sorry for not being active today but I was doing some errands as I am starting my senior year tomorrow :D so excite can`t wait.
Member Since: Posts: Comments:
☮ All you need is Love ☮


Member Since: July 3, 2005 Posts: 449 Comments: 141789
Quoting 883. moonlightcowboy:
Nicole Mitchell joins Al Jazeera America.

They might give MSNBC a run for their money!
Member Since: Posts: Comments:
Quoting 880. auburn:


you guys regulate yourselves for the most part..if the community doesn't like what you post and they flag it..the system removes it..
ok, well I don't know how this works, I rarely post just mainly lurk and read. All I know is my post I'm referring to had only been up like 3 minutes and had been + 4 times then next thing I know is I got a message saying I was banned and my post was deleted. Anyways it's in the past, so when is the next system supposed to form? I read something about the GFS in a few days developing something
Member Since: Posts: Comments:
Quoting 875. Patrap:
Its been a good conversation though, the word, "tw.t" hasn't been used yet.



Not that is hasn't passed our minds.
Member Since: July 17, 2009 Posts: 75 Comments: 30829
SST'S running a bit below normal on the East Coast? Have a hard time getting any activity in thee ole backyard this year!
Member Since: Posts: Comments:
Nicole Mitchell joins Al Jazeera America.

Member Since: Posts: Comments:
882. beell
Maybe easing into a blocking pattern for a bit next week. Strong ridging over most of the central US and Europe-leaving an extremely negative tilt trough off the east coast backing into the Gulf of Mexico.




08/20 12Z GFS 200 mb-Valid 12Z Monday, 08/26
Member Since: Posts: Comments:
Quoting 869. Grothar:


Keep trying. :)


I'm going to my blog where the signal to noise ratio is higher.
Member Since: Posts: Comments:
880. auburn (Mod)
Quoting 873. mobhurricane2011:
I got a post deleted and a short ban for saying how good a job drakeon and levi32 do on this blog, go figure


you guys regulate yourselves for the most part..if the community doesn't like what you post and they flag it..the system removes it..
Member Since: August 27, 2006 Posts: 552 Comments: 52015
Quoting 865. Tropicsweatherpr:
I wonder why NHC didn't mention African Wave in the Five day outlook as GFS starts developing it in 3 days.
They probably want to see consistency in the GFS, I wouldn't be surprised if tomorrow they mention it.
Member Since: June 30, 2013 Posts: 12 Comments: 10304
Xyrus, Fox News has a half decent science page. In contrast to CNN which does not have a science page at all.
Member Since: Posts: Comments:
Our surface wave southeast of Haiti has a decent reflection at the 850 mb & 700mb, but ends there as everything above shows nothing.

850 mb



700 mb



Shear shows anti cyclone to the southwest of it.



System has solid divergence above it...



But has absolutely no surface convergence what so ever...



There is also an ULL to it's west near the east coast of the Yucatan with fast trades east to west from north of the Antilles through the Florida Straits.

Member Since: Posts: Comments:
Quoting 871. Patrap:
How many months were above or below avg Globally the last 30 years ?

Your mission, if you accept it, is to answer in 60 secs.


This post will self delete in 70 secs.


Begin
That's what they said before the last ice age... Then!
Member Since: Posts: Comments:
Its been a good conversation though, the word, "tw.t" hasn't been used yet.
Member Since: July 3, 2005 Posts: 449 Comments: 141789
Thanks..
Member Since: Posts: Comments:
Quoting 837. tornadodude:


How is it that this photo stays, but my post earlier of Chris Farley doing the El Nino skit was deleted and I was temporarily banned?
I got a post deleted and a short ban for saying how good a job drakeon and levi32 do on this blog, go figure
Member Since: Posts: Comments:
Quoting 855. TexasHurricane05:
Any chance this blob could do anything?



Plzs read back a few pages and you will no all there is on it
Member Since: May 21, 2006 Posts: 5101 Comments: 118560
Member Since: July 3, 2005 Posts: 449 Comments: 141789
Quoting 846. Tazmanian:


Rule 11Political comments are allowed, as long as they're in reference to science, science policy, or the blog topic.
Taz, you old turnip, thanks for being the voice of reason that we all depend on!
Member Since: Posts: Comments:
Quoting 850. BaltimoreBrian:


Thanks. I do try ;)


Keep trying. :)
Member Since: July 17, 2009 Posts: 75 Comments: 30829
Quoting 862. Xyrus2000:


Going to Fox News for science related material (especially climate related) is sort of like trusting that email you got from a Nigerian Prince promising you millions if you give him your bank account number.

Also, a theory that has been around for nearly 200 years is not going to be discredited by your anecdotal backyard thermometer. What your seeing is something people versed in the meteorological and climatological fields call...wait for it...WEATHER. A random heatwave or cold snap does not define global climate. It doesn't even define regional climate.

A CLIMATE observation is one that happens over a number of years, typically 30 years or more. So if you were having colder than normal temperatures over the past 30 years on average, then you could claim that your REGIONAL CLIMATE has changed. One, or even several cooler than normal summers is still just random noise. The same applies to warmer than normal summers as well.

I suggest you actually read the report itself. Fox seems to lack reading comprehension. Or maybe they're reading a different report. Either way, what the report actually says and what Fox says are almost completely opposite of each other.
Or you could tune into MSNBC and get the real truth! LOL
Member Since: Posts: Comments:
Oh never never say the draining of aquifers has to do with too many people, especially if one is in the ranks of over breeders (more than 2). Instead, rally for everyone (except those who over breed) to reduce their "carbon footprint" ... for the good of the children that are over bred...
Member Since: Posts: Comments:
I wonder why NHC didn't mention African Wave in the Five day outlook as GFS starts developing it in 3 days.
Member Since: Posts: Comments:
Quoting 843. PensacolaDoug:


That wasn't directed at you. What post was I judging you on?


EDIT:
I read back. I see how you could think that, the way the posts fell.
Apologies.


Ok. Apologies for reacting so harshly.
Member Since: Posts: Comments:


This area over the ne gulf is rotating. Any chance this can spin up into a storm?
Member Since: Posts: Comments:
Quoting 704. tramp96:
Here we go again. That damn Fox News is telling the truth again. Can we please all get together and pout or throw a tantrum or something like that until they stop.
Kumbaya baby

Link

PS
We have had no summer at all in TN and WX Risk is talking about a cold blast 2nd week in Sept.

When you libs hammer me answer one question. If GW is proven to be false will you be mad or glad.
I'm very interested to hear your response.


Going to Fox News for science related material (especially climate related) is sort of like trusting that email you got from a Nigerian Prince promising you millions if you give him your bank account number.

Also, a theory that has been around for nearly 200 years is not going to be discredited by your anecdotal backyard thermometer. What your seeing is something people versed in the meteorological and climatological fields call...wait for it...WEATHER. A random heatwave or cold snap does not define global climate. It doesn't even define regional climate.

A CLIMATE observation is one that happens over a number of years, typically 30 years or more. So if you were having colder than normal temperatures over the past 30 years on average, then you could claim that your REGIONAL CLIMATE has changed. One, or even several cooler than normal summers is still just random noise. The same applies to warmer than normal summers as well.

I suggest you actually read the report itself. Fox seems to lack reading comprehension. Or maybe they're reading a different report. Either way, what the report actually says and what Fox says are almost completely opposite of each other.
Member Since: Posts: Comments:
Quoting 795. sar2401:

The UK Met Office has published a paper last month dealing with this issue. The first paragraph in the executive summary is:
"Global mean surface temperatures rose rapidly from the 1970s, but have been relatively flat
over the most recent 15 years to 2013. This has prompted speculation that human induced
global warming is no longer happening, or at least will be much smaller than predicted.
Others maintain that this is a temporary pause and that temperatures will again rise at rates
seen previously."

Not surprisingly, the UK Met Office then goes on for 25 pages to make the case that this relatively flat period of global warming is indeed a pause in the large warming shown by other factors than just global mean temperatures. Nevertheless, you either believe the UK Met's statement is true or that the UK Met is wrong. You can't simply dismiss the statement by saying the trend in global land and ocean temperature over the past 15 years being flat is simply not true. The numbers don't lie, although there may be explanations as to why the relatively small rise in global temperatures over the past 15 years also don't show that somehow, global warming has come to a halt.

UK Met Paper Link


it's all irrelevant. We shouldn't be polluting and poisoning the world, at our lazy whim, whether GW is man made or not...whether temps anywhere, land or sea rise or not. There is no sense in polluting ourselves and our food and our planet...when we have technology for renewable energy and technology for not wasting fresh water etc. I can't see any good arguement for it, unless someone is making money from industries that help poison the world. I know it's hard if it's not impacting someone personally to care sometimes. But it's our home...and even if cause it's not immediate, our children and grandchildrens home. Unless greed and slefishness are that strong, why do things to ruin it for them even? It's not a matter of left or right, it's a matter of a healthy, clean world...for all people, animals, plants and oceans. There's no need in this day and age to pollute ourselves. Even China had the money and knowhow, to let their growth be guided by clean resources. But on the cheap, as with many places, they chose not to. They had a choice too, technology was there...just wasn't the quickest and easiest option. Makes me sad they've been as money grubbing and careless as anyone else. Commies can be just the same as the west I suppose, lining the pockets of those that matter to them.

Anyway, after 1am here, so off to bed. Sorry if ranting a bit. But anything backing things that hurt the environment, when so uneeded, really annoys me. Like I say...no matter what political affiliation...can't see how anyone can think it's ok to readily pollute our homes, when it doesn't have to be that way
Member Since: Posts: Comments:
Quoting 855. TexasHurricane05:
Any chance this blob could do anything?



No idea, but it's impressive how it kept growing right through DMIN. If it keeps firing more convection overnight, there might just be something to it.
Member Since: Posts: Comments:

Viewing: 910 - 860

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 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32Blog Index

Top of Page
Ad Blocker Enabled

Dr. Jeff Masters' WunderBlog

About

Dr. Masters co-founded wunderground in 1995. He flew with the NOAA Hurricane Hunters 1986-1990. Co-blogging with him: Bob Henson, @bhensonweather

JeffMasters's Recent Photos

Pictured Rocks dunes and clouds
Grizzlies in Lake Clark National Park
Mount Redoubt Lava Dome
Matanuska Glacier