Mosquito Disease Danger Days

The number of days each year that are suitable for disease transmission by mosquitoes is rising in much of the U.S., as temperatures climb with climate change. This can increase the risk of mosquito-borne diseases such as Zika and West Nile. Following research from Stanford University, Climate Central analyzed the number of days in the spring,

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Longer Heat Streaks

The summer doldrums have set in for much of the U.S., but an end to the Dog Days of summer is within sight. The Dog Days traditionally extend from July 3 to August 11, when Sirius (aka the Dog Star) rises and sets with the sun. Ancient cultures believed that additional energy from Sirius helped make the summer days hotter, but in modern times, the

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2018 U.S. Temps: State Rankings Through June

Despite a cold April, 2018 is the 14th warmest year on record so far in the U.S. Halfway through the year, Arizona and New Mexico are record hot, and the remaining southwestern states are each having one of their 10 hottest years. In fact, the four hottest years in the U.S. have all come in the decade of the 2010s. July has been a scorcher from

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More Warm Nights Across the U.S.

Our study analyzed the number of nights each year when the temperature remained above 65°F (for cities that rarely experience nights above 65°F, we chose 55°F), which is an engineering temperature standard for keeping buildings cool. In our analysis of 244 cities across the U.S., we found that 87 percent are having more of these warm nights since

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smoke wave days in the u.s.

Smoke Wave Days in the Western U.S.

The U.S. has come a long way in cleaning up its air. The Clean Air Act of 1970 made air pollution catastrophes like the 1948 smog that killed nearly 40 people near Pittsburgh a distant memory. But while the air is much cleaner overall, smoke from wildfires is threatening the progress that’s been made, as particulate pollution from wildfires has

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mosquito disease danger days

Mosquito Disease Danger Days

The number of days each year that are suitable for disease transmission by mosquitoes is rising in much of the U.S., as temperatures climb with climate change. This can increase the risk of mosquito-borne diseases such as Zika and West Nile. Following research from Stanford University, Climate Central analyzed the number of days in the spring,

more
longer heat streaks

Longer Heat Streaks

The summer doldrums have set in for much of the U.S., but an end to the Dog Days of summer is within sight. The Dog Days traditionally extend from July 3 to August 11, when Sirius (aka the Dog Star) rises and sets with the sun. Ancient cultures believed that additional energy from Sirius helped make the summer days hotter, but in modern times, the

more
extremely hot summer days

Extremely Hot Days on the Rise

Late July is the hottest time of year for much of the country. In the midst of this summer heat, we calculated the number of extremely hot days each year in 244 cities across the country and found that 73 percent experience more extremely hot days than they did a half-century ago.

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u.s. temperature rankings in 2018

2018 U.S. Temps: State Rankings Through June

Despite a cold April, 2018 is the 14th warmest year on record so far in the U.S. Halfway through the year, Arizona and New Mexico are record hot, and the remaining southwestern states are each having one of their 10 hottest years. In fact, the four hottest years in the U.S. have all come in the decade of the 2010s. July has been a scorcher from

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global heat so far in 2018

2018 Global Heat So Far

Globally, the past four years have been the hottest four years on record, and 2018 so far is coming in as the 4th hottest. All-time record heat has peppered the Northern Hemisphere this summer. Here a few stats compiled by Weather Underground: Glasgow, Scotland had its hottest day on record, reaching 89°F on June 28. Montreal, Canada set a new

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warm summer nights

More Warm Nights Across the U.S.

Our study analyzed the number of nights each year when the temperature remained above 65°F (for cities that rarely experience nights above 65°F, we chose 55°F), which is an engineering temperature standard for keeping buildings cool. In our analysis of 244 cities across the U.S., we found that 87 percent are having more of these warm nights since

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cooling demand

Cooling Demand is Increasing in the U.S.

CDDs do not actually measure days at all. Rather, they measure the number of degrees that the daily average temperature is above 65°F. So if the average temperature for a day is 80°F, there were 15 CDDs in that day. Some of the largest increases in CDDs are also seen in the Southwest, however CDDs are increasing sharply in places that traditionally

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hot summer days

Summer Days Are Getting Hotter

The summer solstice occurs at 6:07 a.m. EDT on June 21, marking the beginning of astronomical summer in the northern hemisphere. Meteorological summer, which consists of the three hottest climatological months of the year, started on June 1. No matter how you look at summer, it is the season with the most obvious climate change impact — extreme

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Golf courses are adapting to climate change

Climate Change on the Golf Course

Father’s Day and the U.S. Open are reminders that golf is a big economic driver. One trade study indicated that golf contributes more than $80 billion a year to the U.S. economy. And while golfers are infamous for playing in less-than-ideal conditions, extremes like heat, drought, and heavy rain that come with climate change are impacting the game

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ocean circulation impacts

Global Conveyer Belt: Ocean Current Slowing

June 8 is World Oceans Day, a time to raise awareness about the importance of the oceans to our planet. Ocean currents and broader circulations move vast amounts of water around the world, redistributing heat and energy, and helping regulate the global climate. Wind-driven currents like the cold California Current and the warm Gulf Stream are

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climate change and rapidly intensifying hurricanes

Climate Change and Rapidly Intensifying Hurricanes

Atlantic hurricane season starts June 1, and last year’s season was devastating for the U.S. Damage from Hurricanes Harvey, Irma, and Maria cost the U.S. $267 billion. All three hurricanes went through a rapid intensification (RI) cycle, meaning the strongest winds within the storm increased by at least 30 knots (about 35 mph) in 24 hours. Harvey

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