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    July hottest month on record in US

    July was the hottest month in the contiguous United States since record-keeping began in 1895, government scientists have said, a trend that meteorologists attribute to climate change.

    The searing July heat contributed to a widening of troubling drought conditions, now affecting 63 percent of the nation, the National Oceanic and Atmospheric Administration (NOAA) said Wednesday.

    The average temperature in the contiguous United States -- excluding Hawaii and Alaska -- was 77.6 degrees Fahrenheit (25.3 Celsius), 3.3 degrees higher than the average for the entire 20th century, NOAA said.

    The previous hottest July on record was July 1936, when the average temperature was 77.4 degrees.

    The warm temperatures in July helped make the last 12 months the hottest on record in the United States, and contributed to a record-warm first seven months of the year, according to NOAA statistics.

    The extreme heat and record dryness have created conditions ripe for wildfires, with more than two million acres (800,000 hectares) consumed in July, notably in Colorado.

    California meanwhile had its fifth wettest July on record, and heavy rains were also seen in Nevada and along the western Gulf coast.

    Kevin Trenberth, of the National Center for Atmospheric Research in Colorado, told AFP he was struck by how long the extreme heat had lasted.

    "The fact that we are breaking records by so much and sustained for so long indicates that global warming is playing a role," Trenberth said.

    He said the El Nino and La Nina climate patterns were also to blame.

    A recent analysis of the past six decades of global temperatures by a group of scientists from the US space agency NASA showed a "stunning increase in the frequency of extremely hot summers," said one of the authors, James Hansen.

    Hansen, who directs the NASA Goddard Institute for Space Studies, has said human-driven climate change is to blame for a series of increasingly hot summers and the situation is already worse than was expected two decades ago.

    "My projections about increasing global temperature have been proved true. But I failed to fully explore how quickly that average rise would drive an increase in extreme weather," Hansen wrote in the Washington Post last week.

    Hansen said the European heat wave of 2003, the Russian heat wave of 2010 and massive droughts in Texas and Oklahoma last year can each be attributed to climate change.

     

    19 comments

    • edward  •  3 hrs ago
      I've lived a long time and I notice nothing really unusual going on...And I question the accuracy of the statement that since 1895 there has been any kind of real accurate, and or wide spread records kept of the weather across the United States that can be accessed to back up that statement..Meaning. I doubt there are any accurate records from all 50 States accurately depicting the weather across the Country from City to City or County to County. I remember many a long hot summer in the Northeast with drought conditions while I was growing up and hearing on the Radio about the same conditons across the Corn Belt as broadcast out of some large Utah Radio Station which could be heard from Coast to Coast on a good night....Also I can remember reading in National Geographic Magazine and remember pictures of similar conditons around the the world...SO I give this story a 4 on a scale of 1 - 10 for accuracy...
      • michael 1 hr 42 mins ago
        They do not mention that the records are inaccurate either.
    • buggrthat  •  Panama City, Florida  •  12 hrs ago
      Here is an exercise for those that look at learning something new as an opportunity rather than something to be feared. Do a search on "global drought" and pull up the global drought map from the UK drought monitor web site. We are not alone, in fact, compared to the widespread heat and severe drought in India, we are having it easy. Besides India, places that are having it worse than us are parts of Russia, eastern and western Africa, northern Canada, and Mexico. Those that have it about the same as us are most of the European continent, southeast Asia, other parts of Russia and Siberia, China, and northeastern Canada. This is a global event.
      • michael 1 hr 34 mins ago
        B, did you actually look at the NOAA map? It is not a world wide event. The parts of the US, minor parts of Russia and minor parts of India are suffering from extreme drought the rest are pretty much normal. A large part of the world has no drought at all.
    • Bongdoper  •  Washington, District of Columbia  •  1 day 8 hrs ago
      To all you climate change deniers out there who claim "It's summer, it's hot," the article says July was the hottest month on record. I know conservatives are deniers when science does not conform to their idiology, but guess what... science does not care about your ideology. Nor does it care about mine. If it makes you feel better to belieive in talking snakes, virgin births and invisible floating messiahs.... go right ahead. The world will pass you by, as you bake. Have a nice day.
      • michael 1 hr 32 mins ago
        Since it is actually cooler than in 1000 AD or so the science shows how can we call this event anything more than a normal variation in the climate. Personally the alternative is worse unless you are a ski bum and do not mind a mile of ice on your house.
      • JOHNd 6 hrs ago
        @Jim in CA My main point was that you called what Faith-Statistics Guy said "garbage", when everything he said was consistent with the best available information we have today about Holocene temperature variations.
      • Jim in CA 8 hrs ago
        JOHNd...and your point? I'm well aware that the average length of time for an interglacial is around 30000 years and I'm also well aware we are 12000 years into the current interglacial. Or is it an interglacial? It might be an interstadial.
    • Frank  •  12 hrs ago
      CO2 in the atmosphere has gone up by 24% since the late 50's. Carbon isotopes show that the extra CO2 is from human activities like burning fossil fuels and cutting down forests. Satellites have measured how much infrared radiation is escaping into space carrying heat energy into space and as CO2 levels have gone up less heat energy has gone out. There are a bunch of factors involved in the planet's heat budget, but human caused increases in greenhouse gases are the big one right now. What we've done is to push CO2 levels to where they last were millions of years ago in the Pliocene when Florida was under water and hippos lived in England. With a few decades of business as usual we'll be at Eocene levels when sea level was hundreds of feet higher and crocodillians lived on the Arctic Circle. There are a lot of lags and feedbacks so we will take a while to get the full effect, but that's where we're headed. So we've got a choice of getting serious about greenhouse gas emissions now or we can wait a while and get to spend tens of trillions dealing with the damage and trying to put the genie back in the bottle with risky and incredibly expensive geoengineering approaches. Of course the same way the tobacco industry kept funding denial when their own scientists said the game was over we can count on the Koch brothers to keep funding denial and the cognitively challenged deniers to keep posing nonsense on stories like this.
      • Frank 1 hr 41 mins ago
        Edward as John said look up the Keeling curve. Now the total spending on climate change is a few percent of annual profits for ExxonMobil. Do you think if the basic measurements were wrong that the big fossil fuel companies wouldn't have spotted the problem and disputed them?
      • JOHNd 3 hrs ago
        @Edward. Look up the "Keeling Curve". Or look up " Carbon dioxide in Earth's atmosphere Wikipedia " Or for long term history, visit " Global Climate Change Indicators NOAA NCDC " The best data is from the NASA station in Mauna Loa, set up in 1959, sampling high-altitude well-mixed air in the middle of the Pacific Ocean. But there are many local measures prior to that (variable when on land and at sea level, often), plus excellent long-term proxies are available from gas trapped in gas bubbles in the snow on the antarctic continent - these records go back 800,000 years and are not "guesswork", though the analysis does involve complications and uncertainties of several kinds, including some fuzziness over specific dates.
      • edward 3 hrs ago
        Please provide the source of your statement that Carbon dioxide has risen 24% since the 1950's because nobody was taking those measurements in the 50's other than maybe a College Scienctist here and there, meaning, there was no coordinated nor reliable program of measurment going on especially in all 50 States or from around the World and of course back in the 50's carbon dioxide would be higher because more people had coal furnaces in their homes and still had huge numbers of people burning wood as well, so that would be a good guess but I doubt very much there is any or was any large scale measuring going on....Your just guessing....
    • CraigW  •  2 days 15 hrs ago
      Okay.. why do people quote NASA personnel. They excel in space exploration, monitoring and development... not weather. The trend of getting warmer was predicted by many people, but not because of any human factor, but because we're in a cycle. Any credible weather geek can tell you that. And being from NASA, they should already know that the solar activity plays one of the biggest roles in weather changes. Last year we had one of the coolest summers on record, and for the last couple of years, had some of the coldest winters. Coincidentally, those same years the sun had very little solar activity. And this summer, we had a heat average that was .2 degrees (two-tenths of a degree) Fahrenheit hotter than previously recorded? How is that "breaking records by so much"?
      • Kyle 1 day 6 hrs ago
        Who monitors the weather satellites?
      • CameronS 2 days 2 hrs ago
        The fossil fuel business is running its public relations campaign. They run it through the best lobbying and PR houses money can hire. Not just Heartland and George Marshall, but American Enterprise and Hoover and Cato. The best way they can think of to bamboozle the public about the climate reality is to convince us that scientists are corrupt and lazy and dishonest, and the science they report is unreliable and distorted for political and financial gain. Talk about unintended consequences! Consider the times and places in history when it's been dangerous to be an intellectual or a scientist or a doctor. Pol Pot's campaign. The Cultural Revolution. The Spanish Inquisition. A PR campaign to discredit and demonize science and scientists. And CraigW is showing you the result. Welcome to the new Dark Ages.
      • Jack R 2 days 11 hrs ago
        Mary: You should read the garbage the denial camp is now heaping on Dr. Muller's BEST study. They just won't accept the facts, no matter where they come from.
    • lost boy  •  East Quogue, New York  •  2 days 12 hrs ago
      "July was the hottest month in....." exactly the 117 years we've literally been measuring the temperatures out of the millions we have no data on... . And yet, Hansen insists on calling it "extreme weather,".... Extremely shortsighted, to say the least...
    • Jim  •  Pella, Iowa  •  2 days 10 hrs ago
      To all the global warming deniers: we pump over 90 million tons of pollutants into the atmosphere every day, day after day, year after year, decade after decade. Why do you believe that human industrial activity over such a long term has no effect on the environment?

      Some argue that climate change is caused by natural events and has always been a normal condition of the planet. However, this argument fails to take into account the new variable of human industrial acitivity over the past century. Natural climate change takes place over thousands of years, not within one or two generations as we have seen.

      The other argument is that CO2 is a natural compound necessary for life and cannot be considered a pollutant or a planet-warming gas. However, any compound, natural or not, is considered a pollutant when experienced in unnaturally large quantities...which in turn effects the environment in unnatural ways.

      Many deniers cannot rationalize their arguments and so turn science into a political issue, e.g. blaming Al Gore, liberal agendas, scientific conspiracies, etc. This is because there is little to no non-partisan scientific evidence to back up their claims.

      I'll end with my initial question: we pump over 90 million tons of pollutants into the atmosphere every day, day after day, year after year, decade after decade. Why do you believe that human industrial activity over such a long term has no effect on the environment?
    • Erik R  •  Minneapolis, Minnesota  •  2 days 13 hrs ago
      "The average temperature in the contiguous United States was 77.6 degrees Fahrenheit... The previous hottest July on record was July 1936, when the average temperature was 77.4 degrees"

      Oh no, we beat an 80 year old record by 0.2 degrees.
    • R  •  2 days 11 hrs ago
      Ah, I see the denialists are on here displaying their ignorance of extreme value theory. Crack a book, guys. And maybe look at the evidence?
    • L T  •  McClellan, California  •  2 days 7 hrs ago
      Just know, you will pay at least 25% more for food next year worldwide... If the high temps recur in 2013 and beyond on the same global scale as this year in the grain belts, Molly bar the door.. O', and fuel prices will sharply rise too... This is all about excess food supply - not the total amount of food... Why??? Because, when social order breaks down before we see the real huge climate changes - it will not matter what the weather is like or total crop failure... We will long have been radioactive toast... The bombs will fly long before the food runs out or the ice melts... All social models that take in to account projected climate change projections come to the same conclusion - global thermonuclear war... See, nothing to worry about, gang
    • Jupiter  •  2 days 10 hrs ago
      It's not hot enough for me...I hope the temp goes up higher
    • Mr  •  Fort Worth, Texas  •  8 hrs ago
      Brownsville has been cooler than usual
    • Jerry Case  •  1 day 11 hrs ago
      The first house that was described was a 10,000 square-foot, 20-room mansion heated by natural gas. Besides the 20 bedrooms, it had 8 bathrooms. It also had a pool and a pool house.According to the e-mail, the average electricity and gas bill ran $2,400 a month, and the amount of natural gas consumed by the mansion was over 20 times the average American home.

      The second house that was described was a 4,000 square-foot, 4 bedroom house that incorporated every “eco-friendly” feature that current home construction offers. The house used geothermal heat pumps that drew ground water from 300-foot deep pipes, and this water was used to cool the house in the summer and heat it in the winter. This system used no natural gas and used only 25% of the electricity used to power a conventional heating and cooling system. Rainwater was collected from the roof and funneled into an underground 25,000-gallon cistern. Wastewater from the showers, sinks, and toilets was sent through water purification tanks underground before being sent to the underground cistern. This cistern water was then used to irrigate the property around the house.

      The first house, the gas-guzzling mansion, belongs to none other than Nobel Peace Prize-winning documentarian, Al Gore himself. The second house, a paragon of “green” efficiency, belonged to George W. Bush. Obviously, the point of the e-mail was to point out “an inconvenient hypocrisy” of the left.
    • Jim in CA  •  8 hrs ago
      For those interested in learning the truth, research the 2.8 kiloyear event and the 4.2 kiloyear event. Both are classified as Bond events which are COOLING events. Both triggered severe droughts which ended civilizations. And for those making the claim that only warm climates trigger droughts...stick a sock in it.
    • american  •  6 hrs ago
      didnt we just have record cold temps not too long ago
    • michael  •  1 hr 58 mins ago
      How can you say this is the hottest month on records if records only go back a little more than 100 years? In AD 1000 it was hotter than today a lot hotter. today we are at the same temperature as in Roman times and until 1990 we had not come out of the little ice age when we finally reached the temperature of 1225 after 800 years.
    • EnlightenedSerpentine  •  2 days 7 hrs ago
      look up haarp
      i think part of it has to do with it
      weather weapons
    • wes  •  2 days 7 hrs ago
      113°F / 45°C July 21, 1934 in ohio- ?
    • Jason B  •  Dallas, Texas  •  1 day 15 hrs ago
      Funny, but in southeast wisconsin its been markedly cooler this month than last. Temps in the low 80's or high 70's. Hardly constitutes the hottest July I've ever endured. All this crap is lies by th emedia to accelerate the global warming/climate change agenda.
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