Great Lakes ice cover down 71% since 1973

By: Dr. Jeff Masters , 1:08 PM GMT en Marzo 30, 2012

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Ice cover on North America's Great Lakes--Superior, Michigan, Huron, Ontario, and Erie--has declined 71% since 1973, says a new study published in the Journal of Climate by researchers at NOAA's Great Lakes Environmental Research Laboratory. The biggest loser of ice during the 1973 - 2010 time period was Lake Ontario, which saw an 88% decline in ice cover. During the same time period, Superior lost 79% of its ice, Michigan lost 77%, Huron lost 62%, and Erie lost 50%. The loss of ice is due to warming of the lake waters. Winter air temperatures over the lower Great Lake increased by about 2.7°F (1.5°C) from 1973 - 2010, and by 4 - 5°F (2.3 - 2.7°C) over the northern Lakes, including Lake Superior. Lake Superior's summer surface water temperature warmed 4.5°F (2.5°C) over the period 1979 - 2006 (Austin and Colman 2007). During the same period, Lake Michigan warmed by about 3.3°F (1.7°C), Lake Huron by 4.3°F (2.4°C), and Lake Erie showed almost no warming. The amount of warming of the waters in Lakes Superior, Huron, and Michigan is higher than one might expect, because of a process called the ice-albedo feedback: when ice melts, it exposes darker water, which absorbs more sunlight, warming the water, forcing even more ice to melt. This sort of vicious cycle is also responsible for the recent extreme loss of Arctic sea ice. The increase in temperature of the lakes could be due to a combination of global warming and natural cycles, the researchers said. They noted a pronounced 4-year and 8-year oscillation in ice coverage, which could be caused by the El Niño/La Niña and Arctic Oscillation (AO), respectively.

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Figure 1. A tale of two winters: Lake Superior was choked with ice at the end of the winter of 2008 - 2009 (top), but was virtually ice-free at the end of the winter of 2011 - 2012 (bottom.) Image credit: NASA.

The consequences of Great Lakes ice loss
Ice coverage on the Great Lakes was just 5% this past winter, the second lowest on record, behind 2002. The lack of Great Lakes ice this winter probably added a few degrees of warmth to the unprecedented "Summer in March" conditions observed in Michigan last week--an event the National Weather Service in Detroit called "perhaps the most anomalous weather event in Michigan since climate records began 130 years ago." We can anticipate that areas surrounding the Great Lakes will see an increased incidence of warm spring weather due to decreased ice cover on the lakes.

The loss of Great Lakes ice has allowed much more water to evaporate in winter, resulting in heavier lake effect snow near the shore, and lower lake levels. Lower water levels have had a significant impact on the Great Lakes economy. Over 200 million tons of cargo are shipped every year through the Great Lakes. Since 1998, when water levels took a severe drop, commercial ships were forced to light-load their vessels. For every inch of clearance that these oceangoing vessels lost because of low water levels, $11,000 - $22,000 in profits were lost per day. Hydropower plants have also been affected by low water levels; several New York and Michigan plants were run at reduced capacity, forcing them to buy higher priced energy from other sources, and passing on the higher costs to consumers. The large loss of ice is also likely to accelerate shoreline erosion because of the increase in open water, and promote more algal blooms. It is uncertain if the Great Lake water levels will continue to fall as the climate warms, since the region is expected to see an increase in precipitation over the coming decades. In Michigan, annual precipitation increased by about 14% between 1895 - 2011, according to the National Climatic Data Center.


Figure 2. Great Lakes ice coverage for the period December 4 - March 5, from the winter of 1980 - 1981 through 2011 - 2012. The winter of 2011 - 2012 had the second lowest ice coverage on record, just 5%. Only 2001 - 2002 (4.5%) had lower ice cover. The median ice coverage between 1980 - 2011 was about 19%. Image credit: Environment Canada.


Figure 3. Water levels on Lake Superior between 1860 and February 2012. Since the late 1990s, water levels have seen a steep decline, due to the loss of ice cover allowing more evaporation. Image credit: NOAA/GLERL.

References
Austin, J. A., and S. Colman, 2007, "Lake Superior summer water temperatures are increasing more rapidly than regional air temperatures: A positive ice-albedo feedback," Geophys. Res. Lett., 34, L06604, doi:10.1029/2006GL029021.

Wang, J., X. Bai, H. Hu, A.H. Clites, M.C. Colton, and B.M. Lofgren, 2012, "Temporal and spatial variability of Great Lakes ice cover, 1973-2010," Journal of Climate 25(4):1318-1329 (DOI:10.1175/2011JCLI4066.1)

Have a great weekend, everyone! I'll be back by Monday at the latest with a new post, and may post some weather humor on Sunday (April Fools Day), as well.

Jeff Masters

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1131. nigel20
3:54 PM GMT en Abril 01, 2012
NEW BLOG
Member Since: Noviembre 6, 2010 Posts: 11 Comments: 8226
1130. RTSplayer
3:50 PM GMT en Abril 01, 2012
Quoting Jedkins01:


Well, that's you, lol. As for me, I'm way too much of an introvert, I don't even really bother "hooking up" with girls in general because its a waste of time and leads to emotional problems and or other foolish things and its disrespectful to that person. By my age people should have grown out of that stage which shouldn't occur past adolescence. When I meet the woman who I intended to be married to the rest of my life, well that's a different story, and when I say that I mean it.

I don't desire flirting with girls, neither do I like drinking parties, or parties in general. Don't get me wrong, I'm far from anti-social, I just would much rather have deep conversation with a few close friends instead of a wild college party, yuck! Crowds drive me nuts because people get stupid in crowds and don't use their brain, everything they do is to whatever extreme of the emotion involved.


===

I guess I'm mostly the same way. Entirely too introverted, or maybe its not even introverted, but just have trouble connecting with people on their level and interests.

I don't drink or do parties, and around here, bars, clubs, and so-called church are about the only ways to meet anyone, and I swear church is nothing more than a con game and a fake mask everyone wears anyway, so that's not really a good place to meet someone to love either.

Email and text on internet dating sites is useless, because people read too much into what someone is saying and get offended over absolutely nothing.

As for the 'right woman", I don't know if such a thing exists, or if that's just some childish fantasy thing our culture invented.

My experience is most of the time the one you're interested in doesn't know you exist, and is in love with or has a crush on someone else. Then you end up "friend zoned" in a way that is entirely uncomfortable and unhealthy, and end up just have to get the heck out of the situation all together before somebody gets hurt. Been there a few times, and it sucks. usually go away with nothing, even after months or years of invested time.
Member Since: Enero 25, 2012 Posts: 33 Comments: 1520
1129. nigel20
3:47 PM GMT en Abril 01, 2012
Quoting WxGeekVA:
Good morning, and look what I woke up to:LinkExperimental Model Shows Huge Nor'Easter for next weekend

Good morning
Member Since: Noviembre 6, 2010 Posts: 11 Comments: 8226
1128. aspectre
3:47 PM GMT en Abril 01, 2012
1090 presslord: Rogue wave sidebar: Until the last 30 years or so, they were thought to be simply the stuff of sailor's imaginative lore.....relatively recent satellite technology has been able to document the reality of this phenomenon...

Same thing is true about red sprites. So rarely seen that even experienced pilots were surprised at how true their tradecraft "folk tales" were. And even rarer were reports from the ground.
Due to timing nearly coincident to LARGE lightning bolts, the comparatively dim red light of the overwhelmingly vast majority of sprites were missed entirely, washed out of vision and photos by the temporary flash-blindness caused by the bright white lightning.
It was only after '87 that scientists began photographing and studying the phenomenum, and that techniques leading to deliberate capture of sprite images on film were developed.
Member Since: Agosto 21, 2007 Posts: 0 Comments: 4860
1127. nrtiwlnvragn
3:46 PM GMT en Abril 01, 2012
NEW BLOG
Member Since: Septiembre 23, 2005 Posts: 14 Comments: 11222
1126. GeorgiaStormz
3:46 PM GMT en Abril 01, 2012
Quoting MAweatherboy1:

I hope it happens!


boy people are busy this april fools.
Member Since: Febrero 11, 2012 Posts: 0 Comments: 9732
1125. MAweatherboy1
3:44 PM GMT en Abril 01, 2012
Quoting WxGeekVA:
Good morning, and look what I woke up to:LinkExperimental Model Shows Huge Nor'Easter for next weekend

I hope it happens!
Member Since: Febrero 11, 2012 Posts: 83 Comments: 7844
1124. WxGeekVA
3:39 PM GMT en Abril 01, 2012
Good morning, and look what I woke up to:LinkExperimental Model Shows Huge Nor'Easter for next weekend
Member Since: Septiembre 3, 2011 Posts: 13 Comments: 3476
1123. GeorgiaStormz
3:35 PM GMT en Abril 01, 2012
Quoting Neapolitan:
Welcome to the ambinavigation revolution: Google introduces "Multitask Mode". (Be sure to test it out for yourself by clicking the blue button.)

I think this will come in very handy when hurricane season starts...




nice try google
Member Since: Febrero 11, 2012 Posts: 0 Comments: 9732
1122. TropicalAnalystwx13
3:33 PM GMT en Abril 01, 2012
Quoting Neapolitan:
Welcome to the ambinavigation revolution: Google introduces "Multitask Mode". (Be sure to test it out for yourself by clicking the blue button.)

I think this will come in very handy when hurricane season starts...

It gave me 20 mice.
Member Since: Julio 6, 2010 Posts: 113 Comments: 32338
1121. hydrus
3:33 PM GMT en Abril 01, 2012
Quoting CaicosRetiredSailor:
Journal of Coastal Research
� 1995 Coastal Education & Research Foundation, Inc.


Abstract:
On a clear calm evening during July 1992, an anomalously large wave, reportedly 6 m high, struck the Daytona Beach, Florida area. We hypothesize that a squall line and associated pressure jump, traveling at the speed of a free gravity wave, coupled resonantly with the sea surface forming the large wave or "squall-line surge." The wave was forced along the length of the squall line, with the greatest amplitude occurring at the water depth satisfying the resonant condition. Radar observations showed a strong squall line moving at a steady speed for several hundred kilometers parallel, to the coast from Georgia towards central Florida. The squall line dissipated 10 km north of Daytona Beach; any forced wave would then propagate freely and refract. Wave refraction analyses predict a longshore distribution of wave heights consistent with field measurements of maximum wave runup.

http://www.jstor.org/discover/10.2307/4298439?uid =3739104&uid=2460338255&uid=2460338175& ;uid=2460337 935&uid=2129&uid=2&uid=70&uid=4&am p;uid=83&uid=63&sid= 21100696398711
Hello CRS..They said that if it had hit during the day. surely people would have been killed.
Member Since: Septiembre 27, 2007 Posts: 1 Comments: 21491
1120. GeorgiaStormz
3:29 PM GMT en Abril 01, 2012
This wont pan out, but if it does, i hope it is a little more westerly and southerly, and a little more negatively tilted.

Member Since: Febrero 11, 2012 Posts: 0 Comments: 9732
1119. CaicosRetiredSailor
3:28 PM GMT en Abril 01, 2012
Journal of Coastal Research
%uFFFD 1995 Coastal Education & Research Foundation, Inc.


Abstract:
On a clear calm evening during July 1992, an anomalously large wave, reportedly 6 m high, struck the Daytona Beach, Florida area. We hypothesize that a squall line and associated pressure jump, traveling at the speed of a free gravity wave, coupled resonantly with the sea surface forming the large wave or "squall-line surge." The wave was forced along the length of the squall line, with the greatest amplitude occurring at the water depth satisfying the resonant condition. Radar observations showed a strong squall line moving at a steady speed for several hundred kilometers parallel, to the coast from Georgia towards central Florida. The squall line dissipated 10 km north of Daytona Beach; any forced wave would then propagate freely and refract. Wave refraction analyses predict a longshore distribution of wave heights consistent with field measurements of maximum wave runup.

http://www.jstor.org/discover/10.2307/4298439?uid =3739104&uid=2460338255&uid=2460338175&uid=2460337 935&uid=2129&uid=2&uid=70&uid=4&uid=83&uid=63&sid= 21100696398711


Also from AMS

http://journals.ametsoc.org/doi/abs/10.1175/1520- 0477%281995%290760021%3ATDBWOJ2.0.CO%3B2
Member Since: Julio 12, 2007 Posts: 0 Comments: 6051
1118. Some1Has2BtheRookie
3:25 PM GMT en Abril 01, 2012
Quoting Neapolitan:
Welcome to the ambinavigation revolution: Google introduces "Multitask Mode". (Be sure to test it out for yourself by clicking the blue button.)

I think this will come in very handy when hurricane season starts...


The true secret to multitasking is to do one thing at a time. ;-)
Member Since: Agosto 24, 2010 Posts: 0 Comments: 4749
1117. hydrus
3:25 PM GMT en Abril 01, 2012
Quoting presslord:
an 18 ft high wall of water on a clear day on that wide beach musta been a spectacularly horrifying sight...
I believe it occurred in the wee hours of the morning.
Member Since: Septiembre 27, 2007 Posts: 1 Comments: 21491
1116. GeorgiaStormz
3:23 PM GMT en Abril 01, 2012
Are 5-30-30 severe weather days the theme for this year?
Member Since: Febrero 11, 2012 Posts: 0 Comments: 9732
1115. nigel20
3:22 PM GMT en Abril 01, 2012
Quoting TropicalAnalystwx13:

The CFS is predicting neutral conditions through out the hurricane season
Member Since: Noviembre 6, 2010 Posts: 11 Comments: 8226
1114. GeorgiaStormz
3:17 PM GMT en Abril 01, 2012
Quoting TropicalAnalystwx13:

You forgot April Fool's there.



Dang it didnt work :)
Member Since: Febrero 11, 2012 Posts: 0 Comments: 9732
1113. Tropicsweatherpr
3:17 PM GMT en Abril 01, 2012
Quoting TropicalAnalystwx13:


13,CFS will be discontinued in June and CFSv2 will take over.
Member Since: Abril 29, 2009 Posts: 75 Comments: 14408
1112. MarcoIslandCat5
3:14 PM GMT en Abril 01, 2012
http://www.science-frontiers.com/sf084/sf084g12.htm


Info about the Wave that came ashore 1992 daytona beach! Good read

hope everyone is well and looking forward to the season.
Member Since: Octubre 26, 2010 Posts: 0 Comments: 52
1111. presslord
3:12 PM GMT en Abril 01, 2012
Interesting agriculture newsLink
Member Since: Agosto 13, 2007 Posts: 0 Comments: 10492
1110. Xyrus2000
3:10 PM GMT en Abril 01, 2012
Quoting percylives:


Don't be confused by the minute amount of time it takes to say "A billion". Or by the government's carefree tossing of the word around. A billion of anything is a very large amount.

A block of one billion seconds is 32+ years. A block of one billion inches stretches over halfway around the world. A billion years, don't worry about it.

My concern is that we are going to do something in the next 25 years that gets rid of most of humanity. Especially, if we continue our present lifestyle.


I'm very much aware of the magnitude of "billion". The discussion was about how much time realistically does the Earth have left for sustaining life, and depending on the scenario it's about 1-2 billion years. Human survival really wasn't part of the context.

It's very unlikely that we will still be here by then(on the planet), and if we are we won't be anything like we are now. Of course that's assuming we don't become an evolutionary dead end as a result of ourselves or some cataclysm.
Member Since: Octubre 31, 2009 Posts: 0 Comments: 1521
1109. TropicalAnalystwx13
3:09 PM GMT en Abril 01, 2012
Quoting GeorgiaStormz:
So for all 2004s tornados, ther were only 2 tornado emergencies.

Oh and this is my last post, i am quitting this blog

You forgot April Fool's there.
Member Since: Julio 6, 2010 Posts: 113 Comments: 32338
1108. nigel20
3:07 PM GMT en Abril 01, 2012
Quoting Jedkins01:


Well, that's you, lol. As for me, I'm way too much of an introvert, I don't even really bother "hooking up" with girls in general because its a waste of time and leads to emotional problems and or other foolish things and its disrespectful to that person. By my age people should have grown out of that stage which shouldn't occur past adolescence. When I meet the woman who I intended to be married to the rest of my life, well that's a different story, and when I say that I mean it.

I don't desire flirting with girls, neither do I like drinking parties, or parties in general. Don't get me wrong, I'm far from anti-social, I just would much rather have deep conversation with a few close friends instead of a wild college party, yuck! Crowds drive me nuts because people get stupid in crowds and don't use their brain, everything they do is to whatever extreme of the emotion involved.

That being said, I'm the type of person who is more interested in finding a group of close friends whom I can trust and really get to know and learn who they are. That includes girls too when it comes to friendships, any girl who I don't intend to pursue with my heart I treat her as a sister, for playing with her heart is again of childish behavior.





I Respect your opinion. You are focused on your goal and nothing will stop you from achieving your goal...such dedication can only bring you success. +10
Member Since: Noviembre 6, 2010 Posts: 11 Comments: 8226
1107. GeorgiaStormz
3:06 PM GMT en Abril 01, 2012
So for all 2004s tornados, ther were only 2 tornado emergencies.

Oh and this is my last post, i am quitting this blog
Member Since: Febrero 11, 2012 Posts: 0 Comments: 9732
1106. TropicalAnalystwx13
3:05 PM GMT en Abril 01, 2012
Member Since: Julio 6, 2010 Posts: 113 Comments: 32338
1105. wxmod
3:05 PM GMT en Abril 01, 2012
Quoting Skyepony:
I never realized the cost to the Native Americans that our nuclear use has left.. I spent a summer hiking & playing in this area during college.

America's exploitation of Native American continues to this day. We feel bad about the Trail of Tears but continue to make them endure the new Trail of Toxic Tears today, just to power our iPads and air-conditioners while ignoring the vast solar energy available in the Sonoran Desert.


If the real costs of nuclear power were taken into account, there would be no nuclear power. This is another story about the welfare sucking mining community leaching off the taxpayers after they rape the land for profit.
Member Since: Octubre 4, 2011 Posts: 0 Comments: 1765
1104. Articuno
3:02 PM GMT en Abril 01, 2012
Quoting Skyepony:
Narwhals contributing to mounting climate change data




Sorry, I had too..
Member Since: Octubre 22, 2011 Posts: 0 Comments: 2467
1103. RTSplayer
3:02 PM GMT en Abril 01, 2012
Looks like we might have another run for the record high today.

It's already over 88 degrees!
Member Since: Enero 25, 2012 Posts: 33 Comments: 1520
1102. Xyrus2000
3:01 PM GMT en Abril 01, 2012
Quoting Neapolitan:
Eureka! I suspected it all along!


That was an amusing April Fool's post. :)

Sadly, it seems some people are actually taking it seriously. I'm just waiting to see if WUWT or CA have a serious "response" on the matter. Wouldn't surprise me if those clowns do take it seriously.
Member Since: Octubre 31, 2009 Posts: 0 Comments: 1521
1101. nigel20
3:00 PM GMT en Abril 01, 2012
Good morning all on this first day of April!
Member Since: Noviembre 6, 2010 Posts: 11 Comments: 8226
1100. presslord
2:58 PM GMT en Abril 01, 2012
an 18 ft high wall of water on a clear day on that wide beach musta been a spectacularly horrifying sight...
Member Since: Agosto 13, 2007 Posts: 0 Comments: 10492
1099. hydrus
2:47 PM GMT en Abril 01, 2012
Quoting presslord:
mercifully, I've never encountered one....if memory serves me correctly (and, at this age, it very well may not)...Didn't a rogue wave come ashore at Daytona in the not-too-distant past?
I remember this well, we talked about it at work.....The Florida Rogue Wave

Very little has appeared in the scien-tific literature about the huge wave that crashed ashore at Daytona Beach, Florida, on July 3, 1992. Apparently, the scientific community is happy with the landslide explanation, but there may have been a different sort of disturbance.

First, the basic data:

"A wall of water as much as 18 feet high rose out of a calm sea and crashed ashore, smashing hundreds of vehicles parked on the beach and causing 75 minor injuries, officials and witnesses said.

"An undersea landslide apparently caused the 27-mile-long rogue wave late Friday night, a federal seismologist said yesterday."

The seismologist cited, F. Baldwin from the U.S. Geological Survey, estimated that the wave was 18 feet high and 250 feet wide.

(Anonymous; "Rogue Wave Smashes into Beach," Hawaii Tribune-Herald, July 5, 1992. Cr. H. DeKalb.)

Rumors of a falling object. The landslide theory sounds good, but there have been rumors that another phenomenon was involved. B. Stein, of Orlando, has reported the testimony of a boater, who was far offshore at the time:

"...the boater came forward with the information that, shortly before the time of the wave, he was in his boat about eight miles offshore. He watched as a distant object approached across the sky toward the ocean at a high rate of speed, and crossed the bow of his boat at an angle with a "whoosh" (his word). Shortly after, a giant swell made his 41-foot sailboat handle like a large surfboard. Various news sources state that the meteorite, as it is now being called, was anywhere from a meter to 10 feet across. The boater who wished to remain anonymous, gave the professors enough information so that they are hoping that the Navy will retrieve the object, which is presumed to be lying in about 70 feet of water off the Daytona Beach coastline, with plenty of coordinates for locating it."

(Stein, Becky; "Daytona Beach MiniTidal wave," Louisiana Mounds Society Newsletter, no. 52, p. 2, October 1, 1992.

Comment. With all the military and space-vehicle tracking equipment in the area, someone must know more about this event.
Member Since: Septiembre 27, 2007 Posts: 1 Comments: 21491
1098. wxmod
2:45 PM GMT en Abril 01, 2012
Member Since: Octubre 4, 2011 Posts: 0 Comments: 1765
1097. Tropicsweatherpr
2:43 PM GMT en Abril 01, 2012
This is no April Fool joke as CFSv2 goes to Moderate El Nino by October.



And the SOI continues to tank.

Link
Member Since: Abril 29, 2009 Posts: 75 Comments: 14408
1096. hydrus
2:42 PM GMT en Abril 01, 2012
Quoting presslord:
mercifully, I've never encountered one....if memory serves me correctly (and, at this age, it very well may not)...Didn't a rogue wave come ashore at Daytona in the not-too-distant past?
Early 90,s I believe. I will check it out.
Member Since: Septiembre 27, 2007 Posts: 1 Comments: 21491
1095. hydrus
2:41 PM GMT en Abril 01, 2012
Quoting weathermanwannabe:
Happy April Fools day. Don't know who else to tell (kid asleep and wife is out of town) but mine started on a bad note. Not going to call her to worry her, but, I just had an altercation on my property with a potential burglar around midnight. Was watching TV, heard a noise on the back deck, went outside (with my cell phone in hand) and confronted a man in the back yard. We got into a struggle (I was tyring to call the police) and he knocked me down and took the cell phone..He was shirtless and unarmed so I chased him out to his car on the street, we stuggled again by his car door, and he was able to start his car (with me half in it) and hit the gas. I grabbled the wheel and he hit/bounced off a small tree by the road, I got knocked down, and he barely missed running over me and speed off. Just finished with the police and the Bolos are out on the vehicle. Anyway, I cannot sleep hence this late night entry for me. For those regulars who "know me", I am shaken but fine and my kid and the family dog slept through it in her bedroom; this is not an April Fools day joke.

Anyway, that ball of confusion in the Bay of Campeche looks interesting; if only the sheer was about 30 knots slower................
That guy would have been shot if he did that where I live. I am glad that everybody is alright.
Member Since: Septiembre 27, 2007 Posts: 1 Comments: 21491
1094. presslord
2:28 PM GMT en Abril 01, 2012
mercifully, I've never encountered one....if memory serves me correctly (and, at this age, it very well may not)...Didn't a rogue wave come ashore at Daytona in the not-too-distant past?
Member Since: Agosto 13, 2007 Posts: 0 Comments: 10492
1093. Skyepony (Mod)
2:16 PM GMT en Abril 01, 2012
That's alot of red flag warning..(bright pink)
Member Since: Agosto 10, 2005 Posts: 178 Comments: 38316
1092. Skyepony (Mod)
2:12 PM GMT en Abril 01, 2012
I never realized the cost to the Native Americans that our nuclear use has left.. I spent a summer hiking & playing in this area during college.

America's exploitation of Native American continues to this day. We feel bad about the Trail of Tears but continue to make them endure the new Trail of Toxic Tears today, just to power our iPads and air-conditioners while ignoring the vast solar energy available in the Sonoran Desert.
Member Since: Agosto 10, 2005 Posts: 178 Comments: 38316
1091. hydrus
2:11 PM GMT en Abril 01, 2012
Quoting presslord:
Rogue wave sidebar: Until the last 30 years or so, they were thought to be simply the stuff of sailor's imaginative lore.....relatively recent satellite technology has been able to document the reality of this phenomenon...
I have seen it myself. And it is something I wont forget either..Almost killed 5 of us.
Member Since: Septiembre 27, 2007 Posts: 1 Comments: 21491
1090. presslord
2:08 PM GMT en Abril 01, 2012
Rogue wave sidebar: Until the last 30 years or so, they were thought to be simply the stuff of sailor's imaginative lore.....relatively recent satellite technology has been able to document the reality of this phenomenon...
Member Since: Agosto 13, 2007 Posts: 0 Comments: 10492
1089. Skyepony (Mod)
2:06 PM GMT en Abril 01, 2012
Quoting BahaHurican:
Morning, Skye. Wonder how many of the so-called Bermuda Triangle disappearances have been due to these rogue waves.


I'd guess quite a few. Sounds like they hit a storm with 60kt winds.

Member Since: Agosto 10, 2005 Posts: 178 Comments: 38316
1088. presslord
2:05 PM GMT en Abril 01, 2012
Quoting Skyepony:
Freak wave smashes race yacht in Pacific; Coast Guard trying to reach ship



as a lifelong blue water sailor, I've been out there in all sorts of rough conditions...but the prospect of rogue waves is the one thing that just makes my blood run cold...
Member Since: Agosto 13, 2007 Posts: 0 Comments: 10492
1087. percylives
2:03 PM GMT en Abril 01, 2012
Quoting Xyrus2000:


Actually you're both off to some degree. The sun's energy output increases very slowly over time. In about a billions years or so, the suns luminosity will have increased by about 10%. Life will still exist, and there will still be water, but I doubt we'll be around (at least not here anyway).

With that increase in luminosity, the additional energy is expected to start vaporizing the oceans at an accelerated rate, giving rise to a serious greenhouse effect. The planet will become quite toasty at this point, and whatever life is left will rapidly die off. Plate tectonics slows and ultimately stops with the loss of water, which eventually causes the Earth's dynamo to stop as well.

If anything on the surface still managed to cling to life at this point, this most certainly spells it's doom. Without the dynamo the Earth's magnetic field will collapse, opening the atmosphere and surface to direct bombardment of solar winds and radiation. This would effectively sterilize the surface and begin peeling away the atmosphere.

So in reality, assuming we don't off ourselves and we can adapt to the changes, we have maybe about a billion years left on this planet. If certain other events happen between now and then it might possibly be extended to 2 billion years. Regardless, after that the Earth quickly devolves into a burning, barren, irradiated wasteland (like Venus).

Fun times. :)


Don't be confused by the minute amount of time it takes to say "A billion". Or by the government's carefree tossing of the word around. A billion of anything is a very large amount.

A block of one billion seconds is 32+ years. A block of one billion inches stretches over halfway around the world. A billion years, don't worry about it.

My concern is that we are going to do something in the next 25 years that gets rid of most of humanity. Especially, if we continue our present lifestyle.
Member Since: Agosto 23, 2011 Posts: 0 Comments: 99
1086. BahaHurican
1:43 PM GMT en Abril 01, 2012
Quoting Skyepony:
Freak wave smashes race yacht in Pacific; Coast Guard trying to reach ship

Morning, Skye. Wonder how many of the so-called Bermuda Triangle disappearances have been due to these rogue waves.
Member Since: Octubre 25, 2005 Posts: 19 Comments: 22357
1085. Skyepony (Mod)
1:39 PM GMT en Abril 01, 2012
Early start to sprite season this year..

"At precisely two minutes and
twenty-six seconds after midnight March 30, 2012
there was an incredibly powerful bolt of lightning
in the vicinity of Woodward, Oklahoma that spawned
these red sprites," says Ashcraft. "I
could see them from two states away!" He also
recorded VLF and shortwave radio emissions from
the cluster, which you can hear as the soundtrack
to this video.
Sprites are electrical discharges
that come out of the top of thunderclouds, opposite
ordinary lightning bolts which plunge toward Earth.
Sprites can tower as high as 90 km above ground.
That makes them a form of space weather as they
overlap the zone of auroras, meteors, and noctilucent
clouds.
Because they are associated with lightning,
sprites are most often seen in summer months, "but
in the past few days sprites have been reported
in Texas (particularly near the Mexican border)
as well as here in New Mexico," notes Ashcraft.

Member Since: Agosto 10, 2005 Posts: 178 Comments: 38316
1084. Skyepony (Mod)
1:22 PM GMT en Abril 01, 2012
Freak wave smashes race yacht in Pacific; Coast Guard trying to reach ship

Member Since: Agosto 10, 2005 Posts: 178 Comments: 38316
1083. CybrTeddy
1:21 PM GMT en Abril 01, 2012
Morning everyone! Welcome to April & the 2 month mark until hurricane season.
Member Since: Julio 8, 2005 Posts: 259 Comments: 24248
1082. LargoFl
1:20 PM GMT en Abril 01, 2012
GOOD MORNING FOLKS!..Warm and sunny here for the next few days and hardly any rain in sight..question for you all..that blob in the bay of campache, any chance that rain will reach florida?
Member Since: Agosto 6, 2011 Posts: 4 Comments: 39679
1081. islander101010
1:18 PM GMT en Abril 01, 2012
wanna be you need a dog mind would of turned the odds in my favor unless he was packing then i would of been just another statistic
Member Since: Septiembre 11, 2010 Posts: 1 Comments: 4774

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

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