DNOWS Header

Image Map

Tuesday, July 3, 2018

Are Water Temperatures Getting Warmer?

Courtesy of Pieter De Frenne, Lisa Van Langenhove, Alain Van Driessche, Cédric Bertrand, Kris Verheyen and Pieter Vangansbeke, Methods in Ecology and Evolution.

In the United States, there exists an ongoing debate whether or not climate change is a concept to be concerned about - or do anything about.

Science Magazine reported about an interesting paper published in Methods in Ecology and Evolution, a British Ecological Society journal that promotes the development of new methods in ecology & evolution.

Pieter De Frenne, Lisa Van Langenhove, Alain Van Driessche, Cédric Bertrand, Kris Verheyen and Pieter Vangansbeke watched over 200 hours of video from the Tour de Flanders events from 1981 to 2016. They selected 20 trees that they could see clearly in the footage. The researchers noted the presence or absence of leaves and the size of 20 trees along the course.

During the 1980s, the researchers reported that hardly any trees had leaves during the Tour de Flanders. But from 2006 to 2016, 67% of the trees had at least started growing leaves.

Analyzing footage from an annual sporting event held during the same time of the year is a good way to understand how climate change is affecting plants.

"I have been writing about and hanging around channel swimmers since the 1970s," said Steven Munatones. "I don't remember anyone talking about water above 60-62°F across the English Channel - at least in the 1970s and 1980s. Whether or not that is accurate is something to confirm.

But I wonder if the water temperatures reported by swimmers around the world over the last several decades is increasing.

We know that more and more swimmers are doing high-altitude swims and an increasing number of swimmers are crossing channels earlier and earlier and later and later during the traditional summer seasons.

Open water swimming - especially if we look at the recorded water temperatures of annual marathon and channel swims over the last 100 years seems to be another sports-related, time-tested means to obtain objective data on surface water temperatures around the world

Are water temperatures increasing, decreasing or basically staying the same around the world with normally expected seasonal fluctuations?

Interesting data or swimmer’s observations based on historical records of swims from the English Channel and North Channel to the Rottnest Channel and Cook Strait - and everything between from lake swims in Europe (Lake Zürich) to lake swims in America (Lake Tahoe) can be sent via email to headcoach@openwatersource.com to get the conversation going.

Photos above show International Marathon Swimming Hall of Fame Honor Swimmers Kevin Murphy and Florence Chadwick.

Copyright © 2008-2018 by World Open Water Swimming Association

No comments:

Post a Comment

Thank you very much for your interest in the world of open water swimming.

The Staff of the World Open Water Swimming Association

A Thank You Gift from WOWSA

WOWSA is celebrating the
1-Year Anniversary of the monthly Open Water Swimming Magazine
by giving you a free copy of the anniversary issue.

Open Water Swimming Magazine Anniversary Issue
File Size: 13MB


Download the file to your computer, and then right-click to extract the magazine which is inside the zip folder. The magazine is in PDF format.

CLICK HERE to download your free copy now.

Open Water Swimming Magazine

Open Water Swimming Magazine

The Open Water Swimming Magazine is the monthly magazine entirely focused on open water swimming heroes and heroines of every age, ability, and background. Published by the World Open Water Swimming Association, the Open Water Swimming Magazine is a free benefit to WOWSA members.

WOWSA Member Benefits include 12 issues of the Open Water Swimming Magazine, the annual 276-page Open Water Swimming Almanac, a free listing in Sponsor My Swim, outstanding product discounts from FINIS, an entry in Openwaterpedia and more...

The Other Shore

The Other Shore follows world record holder and legendary swimmer Diana Nyad as she comes out of a thirty-year retirement to re-attempt an elusive dream: swimming 103 miles non-stop from Cuba to Florida without the use of a shark cage. Her past and present collide in her obsession with a feat that nobody has ever accomplished. At the edge of The Devil’s Triangle, tropical storms, sharks, venomous jellyfish, and one of the strongest ocean currents in the world, all prove to be life-threatening realities. Timothy Wheeler’s documentary brings Diana Nyad’s extraordinary adventure to life as Diana sets out to prove that will and determination are all you need to make the unimaginable possible.

2014 Open Water Swimming Almanac

An Almanac for Open Water Swimming

An almanac is essentially a body of knowledge which is so complete that it enables people in different fields to make predictions about the future of their respective industries.

This, for example, was the purpose of the traditional farmers almanacs. It enabled farmers to determine as accurately as possible which crops to plant for the greatest harvests in a given year.

But the farmers almanac was just one example among many.
There are, of course, many different kinds of almanacs.

In fact, there is even one for open water swimming...

Preview the Open Water Swimming Almanac:

The trends are very clear.
The tide is rising for open water swimming.


Open Water Swimming Event Sanctioning

World Professional Marathon Swimming Federation

Open Water Race Calendar

Coaches Education Program