Grand Canyon

PHOENIX — Arizona is known for its torrid summers. But temperature data from the National Oceanic and Atmospheric Administration compiled by Climate Central show summers will only get hotter thanks to climate change.

Earlier this year, a Climate Central report ranked Tucson and Phoenix among the fastest-warming cities in the country, coming in third and fourth, respectively, behind Las Vegas and El Paso, Texas.

The independent organization, which is comprised of scientists and journalists, analyzed 242 cities, and only six are cooling or remaining stable. Alaska, New Mexico and Arizona were ranked as the three fastest-warming states in the country.

The Southwest U.S. is subject to faster warming due to our arid climate because the specific heat capacity is less in drier air than humid air. Higher temperatures will worsen droughts and heat extremes, the report said.

Another report from Climate Central analyzed 244 cities across the U.S. and found that 75% of them recorded an increase in extremely hot days since 1970. “Extremely hot” in Arizona is different from extremely hot in Alaska, but the report showed more thresholds are being crossed in Alaska more often.

Phoenix and Tucson have seen increases in extremely hot days since 1970.

For Tucson, Climate Central analyzed the number of days greater than 105 degrees; it now experiences roughly 17 more days a year than it did in 1970.

In Phoenix – the nation’s fifth-largest city – the threshold was set at 110 degrees; Phoenix now sees nearly eight more days of extreme heat than a half century ago.

Miami has experienced the largest change by far – it has 75 more days above 90 degrees than it did in 1970, the report said.

The federal Centers for Disease and Control says extreme heat is the deadliest of all weather hazards. If greenhouse-gas emissions continue to rise unchecked, the Fourth National Climate Assessment predicts that by the end of the century, extreme heat or cold outbreaks will result in 9,000 additional premature deaths per year across 49 major U.S. cities.

Climate change and parks

You may think of national parks as places to escape the heat, but rising temperatures are affecting them, too.

More than 300 million people visited national parks all across the nation in 2018. But with a warming planet, that visitation is expected to decrease, especially in lower-latitude parks where warming has been more pronounced.

Climate Central’s analysis of 62 national parks found that all but one have shown a warming trend since the establishment of the National Park Service in 1916.

Grand Canyon National Park has warmed on average 2.2 degrees over the past century, and Saguaro National Park has warmed more than 3 degrees. At Gates of the Arctic National Park in Alaska, the increase has been an alarming 4.3 degrees.

Carbon dioxide is the primary greenhouse gas in the atmosphere, at 82%, according to the EPA. As levels increase, so do the temperatures.

Earlier this year, NOAA’s Global Monitoring Division observation station at Mauna Loa in Hawaii, recorded its highest level of CO2 in the atmosphere since the evolution of humans.

Climate Central says CO2 is the primary reason why parks are warming, which could directly impact wildlife habitats and snow amounts in the parks.

Reduce your ‘carbon footprint’

It is never too late for you to do your part in helping to curb climate change. The Earth Institute at Columbia University has outlined many things you can do to reduce your personal carbon footprint, which the Nature Conservancy defines as the “total amount of greenhouse gases (including carbon dioxide and methane) that are generated by our actions.”

Livestock are responsible for 14% of emissions, particularly methane, so eating lower on the food chain and reducing food waste, through such practices as composting, will help.

You can save up to 500 pounds of CO2 each year by washing your clothes in cold water because the enzymes in cold water detergent are designed to clean better.

If you replace your incandescent light bulbs with LEDs, you’ll reduce your carbon footprint and lower your utility bill. Turning your water heater down to 120 degrees can save up to 550 pounds of CO2 a year.

Drive less. An average car produces about 5 tons of CO2 each year. Public transportation, carpooling or rideshare will reduce emissions and reduce road congestion.


(13) comments


I am really late to the game on this story. In fact it is no longer even on page 1 or in the opinion section so the chance of anyone seeing this is quite remote. Maybe if you clicked on "Watch this discussion" you might see it.

Here is a link to a video which makes a lot of sense when it comes to climate change.

Now do I believe everything that is said - no I do not but there is sufficient questioning which should make you question some of your beliefs. For example I am an avid supporter of wind, solar and water as energy sources for two reasons.

1. They are renewable and for the most part clean. I coined the following phrase over 3 years ago. "What we need is clean air to breathe and water to drink for everyone on our planet". That statement has nothing to do with CO2, methane leaks, gasoline powered cars or anything AOC and the New Green Deal but if followed WILL clean up our air and water. And 2. renewable sources are CHEAPER than fossil fuels.

I am not a big supporter of anything government since it has proved to be almost completely useless when it comes to solving problems. With an approval rating of about 17% I find it almost impossible to turn over my life to someone who FAILS 83% of the time and you should not either. In about the same ratio, government is the real problem. A good example would be the below link.

And this is not exclusive to the black community and the cause of this problem is? Yup the TAX laws our government created that rewards mothers for more children and no having a father in the home.

Cleaning our environment would be a good thing HOWEVER we do not need a government agency with an 83% failure rate to tell We-The-People how to do it. We know what needs to be done. We know how to fix the problems facing our economy in the form of massive debt. We know Electric Vehicles are faster, ride better, more economical and run cleaner. We don't need government to try and control our lives.

But government does have its purposes as outlined in the Constitution and we dearly need to redirect government to its proper role in our lives.

Enough ranting for one day. Have a great day everyone.


I don't lose any sleep over this stuff. But then again, I know where I'm going when this life ends.


We all know where you're going and believe me, it is much hotter than Lake Havasu City in July. That is your "prize" for being a liar.

Mr Lemons

Sorry for the out of control "cut and paste." Here's a link to a more readable list with sources for each.


"Breitbart?" Honestly? Just how low will you pathetic DOTs go? And now for some actual facts -

The current warming trend is of particular significance because most of it is extremely likely (greater than 95 percent probability) to be the result of human activity since the mid-20th century and proceeding at a rate that is unprecedented over decades to millennia.

Earth-orbiting satellites and other technological advances have enabled scientists to see the big picture, collecting many different types of information about our planet and its climate on a global scale. This body of data, collected over many years, reveals the signals of a changing climate.

The heat-trapping nature of carbon dioxide and other gases was demonstrated in the mid-19th century. Their ability to affect the transfer of infrared energy through the atmosphere is the scientific basis of many instruments flown by NASA. There is no question that increased levels of greenhouse gases must cause the Earth to warm in response.

Ice cores drawn from Greenland, Antarctica, and tropical mountain glaciers show that the Earth’s climate responds to changes in greenhouse gas levels. Ancient evidence can also be found in tree rings, ocean sediments, coral reefs, and layers of sedimentary rocks. This ancient, or paleoclimate, evidence reveals that current warming is occurring roughly ten times faster than the average rate of ice-age-recovery warming.

Sea level rise - Global sea level rose about 8 inches in the last century. The rate in the last two decades, however, is nearly double that of the last century.

Global temperature rise - The planet's average surface temperature has risen about 2.0 degrees Fahrenheit (1.1 degrees Celsius) since the late 19th century, a change driven largely by increased carbon dioxide and other human-made emissions into the atmosphere. Most of the warming occurred in the past 35 years, with 16 of the 17 warmest years on record occurring since 2001. Not only was 2016 the warmest year on record, but eight of the 12 months that make up the year — from January through September, with the exception of June — were the warmest on record for those respective months.

Warming oceans - The oceans have absorbed much of this increased heat, with the top 700 meters (about 2,300 feet) of ocean showing warming of 0.302 degrees Fahrenheit since 1969.

Shrinking ice sheets - The Greenland and Antarctic ice sheets have decreased in mass. Data from NASA's Gravity Recovery and Climate Experiment show Greenland lost 150 to 250 cubic kilometers (36 to 60 cubic miles) of ice per year between 2002 and 2006, while Antarctica lost about 152 cubic kilometers (36 cubic miles) of ice between 2002 and 2005.

Declining Arctic sea ice - Both the extent and thickness of Arctic sea ice has declined rapidly over the last several decades.

Glacial retreat - Glaciers are retreating almost everywhere around the world — including in the Alps, Himalayas, Andes, Rockies, Alaska and Africa.

Extreme events - The number of record high temperature events in the United States has been increasing, while the number of record low temperature events has been decreasing, since 1950. The U.S. has also witnessed increasing numbers of intense rainfall events.

Ocean acidification - Since the beginning of the Industrial Revolution, the acidity of surface ocean waters has increased by about 30 percent. This increase is the result of humans emitting more carbon dioxide into the atmosphere and hence more being absorbed into the oceans. The amount of carbon dioxide absorbed by the upper layer of the oceans is increasing by about 2 billion tons per year.

Decreased snow cover - Satellite observations reveal that the amount of spring snow cover in the Northern Hemisphere has decreased over the past five decades and that the snow is melting earlier.

Mr Lemons

What I shared are facts if you bothered to look at the sources. Until you give up driving your fossil fueled vehicle, give up air conditioning your house, stop eating, stop using your computer, give up your phone, then I can't take you seriously. How Dare You!


Anyone who uses brietbart as a source wouldn't know a fact if it hit them in the face.


“Climate Central” provided the predictions and “news” in this article. Climate Central is lead by “John Upton” This link will take a reader to his work on “Climate Change”. Make up your own mind about Mr. Upton, I have! [thumbup][beam] CSH


"led" (which is incorrect BTW). Yep, my m ind is made up, "Working closely with researchers in academia, at Climate Central and elsewhere, John Upton leads journalism partnerships with local and national print, radio, television and digital news outlets. He joined Climate Central in 2012 as a senior science writer, and his coverage of bioenergy received an Online News Association award and was a finalist for the John B. Oakes Award for distinguished environmental journalism. He has degrees in science and business and well over a decade of local, national and international journalism experience."


My m ind —- “There is nothing funny about misspelling a word. It is a grievous mistake and one I take very seriously. Finding humor in such a situation demonstrates why DOT's are always incensed when their ignorance is pointed out because they do not value accuracy in communication”. . “Rovr 09/03/2019” What a duffus! [thumbup][beam] CSH

Mr Lemons


Here is the source for numbers 1-27. As you will see, the individual sources are not crackpots, but scientific studies and media reports on “expert” predictions. The sources for numbers 28-41 are linked individually.

1)1967: Dire Famine Forecast By 1975

1969: Everyone Will Disappear In a Cloud Of Blue Steam By 1989 (1969)

1970: Ice Age By 2000

1970: America Subject to Water Rationing By 1974 and Food Rationing By 1980

1971: New Ice Age Coming By 2020 or 2030

1972: New Ice Age By 2070

1974: Space Satellites Show New Ice Age Coming Fast

1974: Another Ice Age?

1974: Ozone Depletion a ‘Great Peril to Life

1976: Scientific Consensus Planet Cooling, Famines imminent

1980: Acid Rain Kills Life In Lakes

1978: No End in Sight to 30-Year Cooling Trend

1988: Regional Droughts (that never happened) in 1990s

1988: Temperatures in DC Will Hit Record Highs

1988: Maldive Islands will Be Underwater by 2018 (they’re not)

1989: Rising Sea Levels will Obliterate Nations if Nothing Done by 2000

1989: New York City’s West Side Highway Underwater by 2019 (it’s not)

2000: Children Won’t Know what Snow Is

2002: Famine In 10 Years If We Don’t Give Up Eating Fish, Meat, and Dairy

2004: Britain will Be Siberia by 2024

2008: Arctic will Be Ice Free by 2018

2008: Climate Genius Al Gore Predicts Ice-Free Arctic by 2013

2009: Climate Genius Prince Charles Says we Have 96 Months to Save World

2009: UK Prime Minister Says 50 Days to ‘Save The Planet From Catastrophe’

2009: Climate Genius Al Gore Moves 2013 Prediction of Ice-Free Arctic to 2014

2013: Arctic Ice-Free by 2015

2014: Only 500 Days Before ‘Climate Chaos’

1968: Overpopulation Will Spread Worldwide

1970: World Will Use Up All its Natural Resources

1966: Oil Gone in Ten Years

1972: Oil Depleted in 20 Years

1977: Department of Energy Says Oil will Peak in 90s

1980: Peak Oil In 2000

1996: Peak Oil in 2020

2002: Peak Oil in 2010

2006: Super Hurricanes!

2005 : Manhattan Underwater by 2015

1970: Urban Citizens Will Require Gas Masks by 1985

1970: Nitrogen buildup Will Make All Land Unusable

1970: Decaying Pollution Will Kill all the Fish

1970s: Killer Bees!


[thumbup][thumbup][yawn]. We all Cant forget the Y2K Phenomenon



Welcome to the discussion.

Keep it Clean. Please avoid obscene, vulgar, lewd, racist or sexually-oriented language.
Don't Threaten. Threats of harming another person will not be tolerated.
Be Truthful. Don't knowingly lie about anyone or anything.
Be Nice. No racism, sexism or any sort of -ism that is degrading to another person.
Be Proactive. Use the 'Report' link on each comment to let us know of abusive posts.
Share with Us. We'd love to hear eyewitness accounts, the history behind an article.