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Happy Thanksgiving! Look at how much weather impacts air travel (month-by-month): http://bit.ly/11taIUv #climatematters

Speaking of the busy travel season and weather, when does weather have the biggest impact on air travel? Take a look: http://bit.ly/11taIUv

Transportation accounts for 28% of greenhouse gas emissions. Here’s how different modes of travel factor in: http://bit.ly/1trT3mD


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Humans emit far more carbon dioxide than Earth’s natural physical and biological processes can remove from the atmosphere. Here’s a NOAA tool to help track carbon dioxide across the globe.


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Story Highlights

  • We are entering the busiest travel season of the year.

  • We all know that weather plays a big role in transportation. This week, we take a look at weather-related air travel delays and cancellations.

  • Transportation accounts for 28% of Americans’ greenhouse gas emissions.

  • Since greenhouse gas emissions are the primary cause for global warming, we take a look at how different modes of transportation are contributing to the overall carbon footprint.


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Seasonal holiday decorations are popping up everywhere, which means the heaviest travel season of the year is upon us once again. Over Thanksgiving alone, some 46 million Americans will be taking trips of 50 miles or longer to visit friends and family, according to AAA. And a whopping 89.1% of them will be driving, with another 7.7% taking to the air. The rest will travel largely by bus or train.

But while the holidays themselves will be joyful, getting there will not necessarily be half the fun. Holiday traffic can be a nightmare even when the weather is good. And this week, a storm will be tracking up the Eastern seaboard on Wednesday, bringing rain and snow to much of the I-95 corridor. Travel delays both on the ground and in the air are almost guaranteed to be worse than usual.

Still, November isn’t the worst month for weather-related flight cancellations. As the graphic shows, the winter months of December, January and February are the riskiest times — no surprise, since that’s when major airline hubs are most likely to see snow and ice. We also take a look at weather-related delays per month. Throughout the year, no matter the season, weather causes less than half of all delayed flights.

Cancellations or not, transportation accounts for 28% of Americans’ overall greenhouse gas emissions. Since this is the primary cause of global warming, many people might wonder how their travel choices will affect the climate. For many of us, of course, there’s not a lot of choice in how we get from here to there since planes, trains and busses don’t go everywhere. Still, it’s useful to know how different modes of transportation stack up.

As you’ll see, driving is the most carbon-intensive way to go in terms of CO2 emissions — that is, if you assume just the driver and no passengers. That’s unlikely to be the situation for many holiday travelers, however. If you add just one passenger it cuts each person’s carbon footprint in half. In that situation, going by car is actually better than flying. But non-holiday travel often does involve just one person per car, which comes out to .802 pounds of CO2 emissions per mile of travel. For other modes of travel, based on an average capacity, the CO2 impact per person is .505 pounds per mile for medium-haul plane flights, .408 for trains and .236 for busses.

Wherever you go and however you get there this holiday, we hope you have a happy and safe Thanksgiving.

Hurricane Season 2014

With the Atlantic hurricane season coming to an end on Sunday, November 30th, here is a visual summary of the season from NOAA.


click here for a larger version





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