Global climate change
Tropical climate zones are expanding as predicted
By Brett Anderson, AccuWeather senior meteorologist
9/19/2018, 1:12:16 PM
The tropical climate zone has been widening at an average rate of about 0.2 degrees latitude or 17 miles per decade in both the Northern and Southern hemispheres.
This widening appears to match up quite well with what climate models had predicted, according to a new study from Indiana University.
Tropical (darker blue) and desert (red) are some of the climate zones shown on the map below.
"Climate change should continue to expand the tropics over the next several decades," said study co-author Paul Staten from Indiana University. "But the expansion may not continue at the rapid rate we've seen; at times it may even temporarily contract."
Widening of the tropics can result in major shifts in climate for some regions just outside the tropical climate belt. Hot, dry deserts tend to lie along the edges of these tropical climate zones, and these changes can lead to an expansion of desertlike climate zones.
The study lists five primary factors that may influence the widening of the tropics......
1. Increasing greenhouse gas emissions, which also lead to warming.
2. High atmospheric ozone loss.
3. Aerosols from volcanic eruptions.
4. Increasing air pollution.
5. Natural variation, such as ENSO. (El Nino Southern Oscillation).
The views expressed are those of the author and not necessarily those of AccuWeather, Inc. or AccuWeather.com
Comments that don't add to the conversation may be automatically or manually removed by Facebook or AccuWeather. Profanity, personal attacks, and spam will not be tolerated.
Global climate change
Global climate change - December 12, 2018, 1:51:49 PM EST
This year's Arctic Report Card is quite sobering once again.
Global climate change - November 28, 2018, 11:11:32 AM EST
Extreme heat events in the U.S. and Canada have increased since 1980.
Global climate change - November 20, 2018, 1:03:09 PM EST
Another top five warmest October on record for the globe.
Global climate change - November 18, 2018, 7:27:14 AM EST
Combating climate change in the U.S. through natural solutions.
Global climate change - November 09, 2018, 12:04:58 PM EST
Ragweed expected to expand further into the Northeast U.S. as the climate warms this century.
Global climate change - November 02, 2018, 1:43:59 PM EDT
New research has determined that the Earth is even more sensitive to fossil-fuel emissions than previously thought.
Global climate change - October 18, 2018, 10:31:26 AM EDT
Climate change may make beer more of a luxury item in the future.