January 29, 2014 § 1 Comment
This was my seventh and final year of providing computer support for the North Central Ohio Dairy Grazing Conference. Each year I have been intrigued by the way the Amish guys toss their hats on coat racks, tables, shelves…whatever, and apparently find theirs at the end of the day. There always seems to be one item in the sea of black hats that just doesn’t fit. One year it was a ball cap, another it was a single white hat. This year it was this coffee mug.
January 27, 2014 § 3 Comments
As we headed up the hill on Killdeer Drive on our walk this morning, Leah noticed that the field was full of snow rollers. She had read something about them in the last week or so. Some of them were 12 inches or more perhaps a little more in diameter. According to a NOAA webpage they are rare and form under the following conditions:
- The ground must be covered by a layer of ice that snow will not stick to.
- The layer of ice must be covered by wet, loose snow with a temperature near the melting point of ice.
- The wind must be strong enough to move the snow rollers, but not strong enough to blow them too fast.
- The ground must have a slope, at least where the snow rollers start rolling.
We did have temperatures overnight that briefly rose above freezing and then plummeted along with winds on the order of 8 to 10 miles per hour so the conditions were probably in line those listed and just right for them to form.
December 27, 2013 § 5 Comments
I took a walk around the farm Christmas morning and found all kinds of interesting things. By far the one at the top of the list was this little ice mushroom. It is a column of ice about 2 cm long with a little mushroom-like cap on top. The ice at the base envelops a small stone. I recalled reading about ice spikes several years ago and thought that this must be a similar phenomenon. One of the references at the bottom of the Wikipedia article led to an article by Dr. Jim Carter of Illinois State University that showed a similar but incomplete formation. Scroll down in the article to figures 7, 17, and 18. (Postscript: Dr. Carter has a page on Pebble Ice, his term for this kind of ice formation)
We had unseasonably warm temperatures on the previous weekend and about two inches of rain. The soil was unfrozen and saturated. By Christmas (Wednesday) morning the temperature had fallen to 11° F. Ice needles were common in the silty soil. I found the “mushroom” in a small depression near the intermittent stream that runs through our woods.
Here is another photograph of it after I removed it from its original setting for a closer look. You can see remnants of some ice needles at the upper right and in the soil at the base of the mushroom.
December 24, 2013 § Leave a comment
Several years ago, a friend and former neighbor ran into my wife at the grocery store a week or two before Christmas. He asked if she still had her sheep. Yes, she did. He wondered if he could bring their children over Sunday afternoon to have some pictures taken for a nativity activity their church was doing. Sure they could and Sunday would be fine.
Sunday afternoon arrived. We were just finishing our noon meal when we saw a half dozen mini-vans coming up our driveway. What was this?! They must be lost. Then we saw our friend. He apologized; he hadn’t realized the scope of the project. They had the whole cast of characters…Mary and Joseph, of course, and three wise men, and lots of little shepherds. And parents and a few other interested parties. There might have even been a few angels. My wife went up to the barn to try to calm the sheep and get things ready. I stayed put in the house. It was just a little too much activity for me on a Sunday afternoon.
A little while later, my wife came back to the house. She said one of the adults had come up and quietly asked if she had a doll they could borrow. It seems that no one had remembered to bring the baby Jesus… I’m not sure how she handled the request since we never really had dolls in our household that I can remember.
Now I think of this story every year when Christmas rolls around…
Merry Christmas! (and don’t forget the baby Jesus.)
November 20, 2013 § Leave a comment
As I wrote last March, my 2013 Astronomical Calendar raised the hope of two great comets this year. While the first, PANSTARRS, was a beautiful little comet, it couldn’t be called great. The second even more exciting comet, C/2012 S1 ISON, is a sungrazer that held some promise of rivaling the Great Comet of 1680 that could be seen in broad daylight. As the months passed, that promise has faded as usually, but not always, happens with comet predictions.
Last week I wrote that there are four moderately bright comets in the morning sky right now and that we had located the easiest one named Lovejoy. ISON was one of the others. The best viewing window for ISON is now beginning to open. If ISON is to develop into a great comet it will do so in the next three weeks or so. This morning we got up to begin our pursuit of this comet.
As usual there was a veil of thin clouds toward the eastern horizon at 5:00 am local time. Also as usual for this time of year, my preference was to crawl back into bed. But I slipped into some shoes and pulled on my jacket and stepped outside still in my pajamas. The pajamas were an indicator of my low expectations. The temperature was around 22 deg F with a slight breeze. The sky overhead and to the west was beautifully clear and bright with some jet contrails near the moon. OK, I’ll take the next step.
I went inside, started a pot of coffee, and got dressed for a more serious attempt at this comet. I left the house a few minutes later armed with a cup of strong coffee, my binoculars, and a finder chart. I drove up on the hill to the west of the farm. From there I could see Spica, the star that ISON had passed a couple of days ago but not much else down toward the horizon. I leaned my back against the car and scanned the sky overhead to the south of The Big Dipper. There was Comet Lovejoy, easily found. It is relatively large and diffuse…a fuzzy spot. Back to the horizon… My locators were Spica and Saturn. The comet would be located almost halfway between them but a little to the southeast of the line connecting them. I couldn’t see Saturn yet but I started sweeping around under Spica looking for the comet. One of the problems with looking for comets when there is thin cloudiness is that everything has a fuzzy appearance if you can see anything at all. Shortly after I started sweeping I found a candidate and I watched it. Every so often I thought I could see a tail extending up and to the right. It didn’t change and I really could see a tail. This was ISON!
My low expectation of finding this comet was also indicated by my leaving my camera at home. Now I wanted it so I went back and got it. By the time I returned to the hill, Saturn had risen so I could see the three important items, each one exactly where the finder chart said they should be in relation to each other. I took several photographs.
ISON is a beautiful little comet. It is streaking toward perihelion on November 28 when it will be within one solar diameter of the sun’s surface and moving at nearly 400,000 miles per hour! If it survives that close approach it may still reach great comet status.
Postscript: Actually, WE SAW ISON; my wife Leah also saw it but I couldn’t resist using the title I did.
November 10, 2013 § Leave a comment
In a somewhat surprising turn of events, there are 4 relatively bright comets in the predawn sky right now. An article by Tony Flanders at Sky and Telescope gave me some hope that I might be able to see at least one of them if a clear sky presented itself.
I got up at 4:30 this morning to look for Comet Lovejoy (C/2013 R1). I looked out the window and saw low dense clouds, brightly lit by the lights of Millersburg to our west. It would have been easy to go back to bed. Instead, I got dressed and found my coat, shoes, and binoculars in the dark and went outside. I found low thick clouds with occasional openings into a clear dark sky filled with bright stars beyond. The comet was on the border of the constellations of Leo and Cancer, between the Sickle of Leo and The Beehive Cluster. Several small openings passed by the general area so that I was able to figure out where I should look if a nice opening would appear. Through another opening to the south I saw a meteor, an early Leonid; then another to east a little later. A Barred Owl called in the woods north of the house.
Suddenly there was an opening east of The Beehive. I raised my binoculars and there was Lovejoy in the center of the field and more easily found than any recent comet I have seen. I watched through a couple of other openings. The lead photograph illustrates the components of my early morning viewing: clouds, a meteor in the lower left corner, The Beehive Cluster, and if you can see it, the tiny turquoise track of Comet Lovejoy. The photograph below shows the comet circled.
It was a pleasant morning and well worth the effort to get up.
September 16, 2013 § 3 Comments
In 2007, after the company that I worked for closed its doors and moved on in name only to a more distant location, I was fortunate to find part time work for several months in the Agroecosystem Management Program (AMP) at The Ohio Agricultural Research and Development Center (OARDC). I worked on a start-up project to investigate the use of audio recordings to study rhythm, function, and change in agricultural ecosystems. That first year we struggled to get recorders running reliably and to develop some analysis methods. Since then I have been working on the project at a very low level as an external consultant to maintain two recorders on a research farm. While the recorders continued to be temperamental we are closing in on two years of continuous data on those two recorders. I also was able to finally put together a webpage on the project to include in the newly updated AMP website. On it I have included some of the audio recordings I found interesting and the detail spectrograms for them.
While those details are interesting I came up with a different analysis based on the idea of the spectrogram but covering extended periods of time that I find much more interesting. The figure shown at the beginning of this post is one iteration of that method that shows the acoustical record for an entire year starting in March of 2012 and extending through February of 2013. During that time we made a thirty second recording every thirty minutes for a total of 17,520 audio recordings summarized in the figure.
The recorder was located in a brushy drainage way at the edge of a soybean field. The figure shows twelve panels, one for each month; the time progresses from left to right on each panel. The vertical axis shows the audio frequency increasing from the bottom of each panel to the top while the color indicates the intensity of the sound, increasing from blue through yellow to red. The vertical lines with red bases are the sounds of stormy periods. March of 2012, represented in the first panel, was unseasonably warm, a “false spring”. Starting about March 12th we see a series of yellow dots, changing to red a few days later at about 3000 Hz…spring peepers calling during the warm evenings. We also see trilling toads join in at about 2000 Hz around the 20th of the month. We can see birds singing in the faint yellow vertical bands in the mid-frequencies, particularly during the breeding season of May, June, and July. The bright noisiness at the bottom of most panels is a combination of wind noise and the sound of traffic on a distant four-lane highway.
But the most striking feature of the figure to me, is the appearance of the songs of summer insects starting in mid-July and extending through mid-September where they begin to fade. The diurnal cycle of sound with higher pitch songs during the day and lower pitch sounds at night, modulated by the temperature, is evident during those months.
As I have time, I want to go back into our database and construct yearly panels for each year we have data even though it is not continuous. In the meantime the recording continues.