How to scientifically forecast the weather with a groundhog!

“Besides water, trees provide pure air. They are the great filtering machines for the human organism. They improve and transform the air in a way which is most favorable and most acceptable to the lungs of man.”~Richard St. Barbe Baker

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Can you really scientifically forecast the weather with a groundhog???

Step One:
Where is a groundhog when you need them?

Groundhog (Marmota monax), has a plethora of names.  A groundhog can rightly be referred to as a woodchuck, or whistlepig, chuck, wood-shock, groundpig, whistler, thickwood badger, Canada marmot, monax, moonack, weenusk, digger and red monk and is a rodent of the squirrel family (Sciuridae) in a classification known as marmots. The groundhog is the largest squirrel found in its range, measuring in at 65 cm (16 to 26 in) long (which is inclusive of the 15 cm (6 in) tail) and weighing 2 to 4 kg (4 to 9 lb). In choice conditions, a groundhog may be as large as 80 cm (30 in) and 14 kg (31 lb). The groundhog can take to their burrow, climb a tree or swim away to flee from their predator. So how does a woodchuck compare to other common mammals in North America?

Groundhog - Marmota Monax Adapted from an image courtesy Cephas_CCxSA3-0
Groundhog – Marmota Monax Adapted from an image courtesy Cephas_CCxSA3-0

The American beaver (Castor canadensis) happens to be the largest rodent in North America weighing in at 11 to 32 kg (24 to 71 lb). The body from the tip of the nose to the base of the tail is 74 to 90 cm (29 to 35 inches) with the large flat tail adding another 20 to 35 cm (8 to 14) inches in length. Both Groundhogs and Beavers to get away from enemies and predators. The beaver’s entrance to the lodge or beaver dam is deep underwater as a defence against predators. The groundhog burrow opens up at the edge of a forest, near a tree or building.

American_Beaver Castor canadensis Adapted from image courtesy _Steve_CCxSA2-0
American_Beaver Castor canadensis Adapted from image courtesy Steve CCxSA2-0

Muskrats (Ondatra zibethicus), are about 41 to 64 cm (16 to 25 inches) in length, weighing in at .7 to 2 Kg (1.5 to 4 lbs). Muskrats love marshlands, and will make burrows or lodges out of cattails. In the water, they are distinguishable from the beaver as the muskrat tail will propel the rodent through the water by spinning around and around. The beaver’s tail lies flat behind them when swimming, or lowers in the water. The beaver’s tail is useful to sound a warning by lifting it up and slapping it down on the water surface making as large a noise and as big a splash as possible.

Muskrat Ondatra_zibethicus_Adapted from image courtesy AlexanderKlink_CCx4-0
Muskrat Ondatra_zibethicus_Adapted from image courtesy AlexanderKlink_CCx4-0

The badger’s name comes from the French word “becheur” which means digger.
Like the groundhog’s Latin name Marmota monax; Marmota meaning Mountain rodent, and monax meaning digger. Groundhogs do hibernate, but the American Badger (Taxidea taxus) enters into a torpor or deep sleep for perhaps up to three weeks. The American Badger is low to the ground measuring about 60 to 75 cm (24 to 30 inches) long with a weight of 7 kg (15 pounds). Badgers are belong to the family, Mustelidae and are mainly carnivorous. Badgers are not classified as rodents, but groundhogs, beavers, muskrats, and porcupines are rodents. And although one groundhog nickname is “thickwood badger”, the groundhog does not belong to the family Mustelidae, which only hosts the Muskrat, weasel, otter, ferret, and wolverine. Both groundhogs and badgers dig burrows, and have special adaptations for digging.

American Badger (Taxidea taxus) adapted from Image courtesy ODFW_CCxSA2-0
American Badger (Taxidea taxus) adapted from Image courtesy ODFW_CCxSA2-0

Porcupines (Erethizon dorsatum), are another commons North American rodent. the name from two Latin words porcus meaning pig, and spina, quill is very suitable. How does a porcupine compare in size to a groundhog? Well the porcupine has a round body 60 to 90 cm (2.0 to 3.0 ft), and the tail would add an extra 4.5 to 30 cm (5.7 to 11.8 in) in length. The stocky porcupine weighs in at 3.5 to 18 kg (7.7 to 39.7 lb though typically they are seen around 9 kg (20 lb). Porcupines don’t burrow like badgers, muskrats and groundhogs nor do they build burrows and dams like muskrats and beavers. Porcupines live in coniferous and mixed forests creating dens in hollow trees. Muskrats may be seen at dawn or dusk, and porcupines are mainly nocturnal, sleeping during the day up in trees. Where the badger is carnivorous, the groundhog, beaver and porcupine are herbivores. The muskrat is an omivore, mostly eating plants and cattails, but will eat aquatic animals to supplement their diet. The porcupine and beaver will eat tree bark, twigs, roots and stems along with other vegetation, the groundhog, also called a woodchuck, does not chuck wood, or eat trees.

Porcupine, Erethizon_dorsatum_Adapted from image courtesy Danielle Langlois_CCx3-0
Porcupine, Erethizon_dorsatum_Adapted from image courtesy Danielle Langlois_CCx3-0

Where a group of beavers is called a “colony”, and several badgers together are called a “cette” not a herd, or flock. Now then, a group of muskrats could be called a “colony, horde, pack, plaque or swarm.” Very appropriately a group of porcupines is called a “prickle”! There have been some discussions about what a group of groundhogs is called whether it is a “madness of marmots” or a” college of groundhogs”.

Groundhog or Woodchuck (Marmota Monax) Range shown in orange.  Adapted from Image courtesy -Anreyostr-CCx2-5_3-0.jpg
Groundhog or Woodchuck (Marmota Monax) Range shown in orange. Adapted from Image courtesy -Anreyostr-CCx2-5_3-0.jpg

Using these essential elements as a foundation to find a groundhog, take your first steps to locate this most excellent weather forecaster. Groundhogs are usually found in areas where forest opens up into a field, road or marsh. So a groundhog has different habitats, eating habits, size and lifestyle from other large mammal rodents in Saskatchewan. Have you spied a groundhog in Saskatchewan? What about a groundhog in Saskatoon?

How Can a Groundhog Forecast the weather, Scientifically?

How can the groundhog be a “meteorologist” and predict the weather? Is it possible, or is it just a myth? Do not resist delving deep into this myth, it just may be grounded in truth and meteorological science!!!

Groundhog day is February 2, and it is rather an excellent bit of folklore about predicting spring. During the winter months, if the day is sunny the weather will be cold and brisk. It is during a sunny day when the groundhog may indeed see his shadow, and the stark chilliness of the day, may indeed entice the groundhog to turn tail and return to the warmth of his burrow. On the flip side of the coin, in the winter, if the day is cloudy, the weather is warmer from the cloud cover trapping in the heat from the earth. Therefore, on a cloudy day, the groundhog cannot see their shadow as there is no sun to create a shadow, the day is much warmer, and the groundhog may spend some time outside of his burrow suggesting that an early spring is around the corner.

So can this really be a way to forecast if spring will be coming soon, (because the groundhog did not see his shadow)?  Or can it foretell if spring will be yet another 6 weeks away because the groundhog did in fact see his shadow?

Don’t take my word for it, this is what meterologist Nick Walker has to say about winter cloudy and sunny days; “Cloud cover on a winter night means you can expect warmer weather, because clouds prevent heat radiation that would lower the temperature on a clear night.” r So to further explain the difference between a cloudy day and a sunny day in the winter time. “If there are no fronts or precipitation nearby, the daily temperature cycle is primarily controlled by the radiation budget. This is a comparison between the incoming radiation from the sun (sunlight) and the terrestrial radiation given off by the earth’s surface (felt as heat.)”

Walker further expounds that “sunshine is only one thing that affects temperature, and in winter, it is far from being the main thing. … The cold air at Earth’s surface is very dense and heavy, so it’s hard for clouds to form in that cold sinking air. So sometimes in winter, skies are very clear and temperatures are very cold. Also, winter is the time of year that the angle of the sun, especially in the northern U.S. and Canada, is so low in the sky that there’s never enough direct sunlight to warm the Earth very much even at midday with clear skies. And if there’s snow on the ground, the snow reflects a lot of the sun’s energy away, preventing the ground from absorbing it. So temperatures end up cooler than if the ground were bare. Even if the ground absorbs some of the sun’s energy, the heat radiates back up into space with no clouds to keep it near the ground. So when you look outside and see sunshine, you cannot assume it’s going to be a warm day.”

Speaking of weather fronts and clouds, another interesting fact about how no shadow may forecast an early spring is that when there is “a low layer of uniform, dark grey cloud,” then the groundhog would not see their shadow. Furthermore, this solid mass of cloud blankets the sky, then “when it gives precipitation, it is in the form of continuous rain or snow. The cloud may be more than 15,000 feet thick. It is generally associated with warm fronts.”Pilot Friend

So there you have it, resistance is futile. This is how the groundhog myth or folklore actually works scientifically to predict the weather. The Groundhog Day story that if a groundhog sees his shadow, there will be 6 more weeks of winter is actually based in science due to the effects of a clear sky with no clouds. And the folklore which exists on Groundhog day that if the groundhog does not see his shadow would mean that February 2 is a warmer day, and the cloud cover may have formed in conjunction with an incoming warm front.

“Besides water, trees provide pure air. They are the great filtering machines for the human organism. They improve and transform the air in a way which is most favorable and most acceptable to the lungs of man.”…~Richard St. Barbe Baker

BIBLIOGRAPHY:

Alongie, Jenise. Badger FActs. Animal Facts Encyclopedia. 2011-2017
American Badger. Wikipedia.

Badger Wikipedia.

Bradford, Alina. Facts about Muskrats. Live Science Contributor. Jan. 28, 2017.

Groundhog. Wikipedia.

How to Predict the Weather Without a Forecast

Meteorology – Clouds Pilot Friend.

Muskrats – Water loving Rats. Pictures and facts.

Names of Animal Groups

North American Beaver Wikipedia.

Walker, Nick. Winter and Cold Weather Previously Asked Questions. 2007 Small Gate Media.

North American Porcupine Wikpedia.

Odd names for groups of animals flash cards. Quizlet.

Porcupine. Wikipedia.

For more information:

Richard St. Barbe Baker Afforestation Area is located in Saskatoon, Saskatchewan, Canada north of Cedar Villa Road, within city limits, in the furthest south west area of the city.
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This website is about the Richard St. Barbe Baker Afforestation Area - an urban regional park of Saskatoon, Saskatchewan, Canada. The hosts are the stewards of the afforestation area. The afforestation area received its name in honour of the great humanitarian, Richard St. Barbe Baker. Richard St. Barbe Baker (9 October 1889 – 9 June 1982) was an English forester, environmental activist and author, who contributed greatly to worldwide reforestation efforts. As a leader, he founded an organization, Men of the Trees, still active today, whose many chapters carry out reforestation internationally. {Wikipedia} Email is StBarbeBaker AT yahoo.com to reach the Stewards of the Richard St. Barbe Baker Afforestation Area

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