Showing posts with label fog. Show all posts
Showing posts with label fog. Show all posts

Tuesday, March 19, 2019

Osiris Rising



Winter began at the end of January. The low temperature, early Wednesday morning, January 30, bottomed at -34℉ with a high temperture of -16℉. In February, temperatures did not get very much above 10℉, and were often below zero.



My wife described these low temperatures in this way -one feels surrounded. Imagine you stepped outside of your plane on a flight across country...




When it's minus thirty you can play around with making clouds with boiling water.




I retreated to Cedar Creek Ecosystem Science Reserve one last time to work on some writing. The moon rose, and later that night, the second of several significant snowfalls began.




The snow piles higher; sliding off roofs, snow blown, and accumulation.



The icicles grow longest on the upper floors -some over six feet long.



Ice dams form where house heat melts roof snow, where the weight of snow compresses it at the edges of a roof.



By February 20th we had the snowiest February on record -with still more snow to come. By the same date, however, one begins to think of what else may come -warmth! With it comes melting, wet snows, even rain. The weight on the roof is probably okay under the cold regime, but snow is like a sponge -lighter when dry and heavier when wet. Ordinarily welcome, the warmth could become a problem.



It is easy to imagine the return of glacial lake Agassiz, forming as rainfall accumulates between a snow pack of thirty inches, four foot snow mounds, and the frozen ground. I begin to clear areas previously left untouched -in front of the greenhouse, the sidewalk between the house and front yard and six feet beyond the walkway between the house and the backyard.




I even cleared a path to the compost pile -you can almost make it out on the far right, above. This was to keep us from trudging knee deep to dump the bucket, but also to give the melt water a place to travel down slope, away from the house.




Then it was time for the inevitable: clearing the roof. Wind helped keep some edges below sixteen inches, but other spots were above eighteen inches. This view is akin to a core sample -each storm depositing more snow, compressing under the weight of the next. The upper portion is the thickest and lightest, the bottom crispy and snow-cone like.





One of my better purchases: insulated rubber boots: good to -20℉.




When climbing out a window into a thirty inch snow drift, mind the space above your head. This icicle was disturbed by my head, broke, and dropped on my noggin -not a good way to start shoveling snow off of the roof.




On March 10 we woke up to another six or seven inches of snow. This time the temperature was in the mid to high twenties and the snow sticky: aka wet snow -a sign of things to come.




A six foot tall azalea has little positive things to say about six inches of wet snow. We have noticed that between -30℉ and 30℉, the azalea leaves change form. Warmer temperatures show leaves that are open wide and flat. At colder temperatures, the leaves are tightly rolled.




By Tuesday, March 12, the air was a warm and dewy 37℉. That's when the rain started to fall. By Wednesday, we had a morning fog with near white out conditions. It continued to rain through Thursday -leading to flood reports across several Midwestern States. 

There is little moderation in the Midwestern climate -at times, we can span 70 degrees in a couple of days. On the coasts, even within a three week period, to experience below zero temperatures at the beginning and sixty degrees Fahrenheit at its end, is unheard of. With over thirty inches of snow on still frozen ground across the entire state, days of rain, and the increasing temperature to near 60℉ by Saturday, we will see large scale flooding.




Like Osiris rising from the dead, so too is spring. The geese were heard flying over just a few days ago. The birds, winter friendly, are spring noisy. The popping of basswood, Tilia americana, trunks were heard echoing among the woods on a sunny afternoon of twenty-five degrees -calling us out to tap sugar maples for sap.



From winter weather to spring in bird song.



Saturday, February 6, 2016

Cedar Blush

The foggy morning was a prelude to the storm that just ended. Blue sky, something we've had little of this winter, is now in its stead. It is these weather events that make a cold climate tolerable, just rewards for what can be hard.



Moisture riding the push of warm advection crystallizes on cold twigs and grasses.



And sumac not yet pecked by the birds.



I love the cedars that grow here; reminding me of those that break the monotony of old fields on Long Island. They, of course, are the same species, and aren't truly cedars -Eastern Red Cedar, Juniperus virginiana. These are tough trees, can be over nine hundred years old, tolerate drought and wet, cold, and the poorest soils. While deer browse your expensive arborvitae hedges, by the looks of the Eastern Reds around here, they hardly touch them. There is gin, of course, and the aesthetics which, to my eye, are some of the best an evergreen can provide.

There is a moment every autumn, usually middle to late, when the cedars turn bronze, red, mauve, blushed or however you may see it. This change requires a loss of some of chlorophyll's green and the development of red anthocyanins and the two, together, create this bronzing effect. This is painter's stuff, mixing reds and greens to create blacks more green or more red. The dark bronze contrasts with the white of aspens and snow and plays well with ochre field plants.

Like so many plants you love, someone, somewhere lists them as invasive. How can this be, you ask, after all it is a native in its range! Well, I rationalize it this way -Eastern Reds grow readily in farm fields and get a bad rap for its ability to grow readily from bird-dropped seeds in these fields. The other reason is the loss of fire as a control agent, but this is our fault, and we shouldn't be blaming the cedar. Finally, because we plowed under so much prairie that there is less than one percent of it left, managers curse the Eastern Red for colonizing what's left that isn't being managed by fire. Given these rationalizations, I still wouldn't blink if I had the opportunity to plant one on our land.  I may well have that chance in one of the many clearings created by downed large oaks or bass that have given rise to another accomplished colonizer -common buckthorn.