Showing posts with label pine beetle. Show all posts
Showing posts with label pine beetle. Show all posts

Tuesday, January 29, 2008

Cold snap reduces Pine Beetle

The interesting question this winter is how cold is it really. It certainly appears to match up to the cold winters experienced a couple of decades ago. For the past decade, all got used to fairly easy climes in the Northern zones. Now they are all a little surprised to get hit with lots of minus thirty as late as now.

In the meantime, we have a report on the temperature impact on the pine beetle in our northern forests. The good news is that the population will certainly be reduced and perhaps knocked out in those areas were they were marginal which is good news. However the population is so huge that it will take several years to bring the problem under control. The biologists still think that the infestation must run its course.

I am more interested in seeing the effect on the Arctic Sea Ice. I also wonder if we have not missed a mechanism for rapid heat loss in the Arctic triggered by open water. The models are always compelling until nature throws a curve ball. We supposedly accumulated a lot of heat in the Arctic this past summer and the onset of new ice may even have been delayed as a consequence.

Regardless the total sea ice was reduced to a major minimum. This makes the next warming season well worth monitoring.


And I think that a lot of new questions will need to be answered.

Tuesday, September 18, 2007

Linking corn culture and pine beetles

As readers know, I have never been comfortable about the proposed link between global warming and excessive CO2 emissions. Both are measurable facts and their existence is indisputable. But as a thinker who loves rigor, I find it unnecessary to link them to explain the present climatic environment. I also sense a very real danger that the linkage will lead to a global policy misstep when global industrial economy needs very specific issues to be aggressively addressed. Of course, if we can get the right thing done for the wrong reasons, who am I to complain. I am more worried about the wrong thing for the wrong reason.

In our earlier posts, we have extensively developed the thesis that the adoption of terra preta corn culture globally will not only sequester all the excess carbon but also manufacture high quality soil in a previously unanticipated span of time. We can expect a ton of carbon per acre per year of uptake which is at least ten to a hundred times the rate of any alternative. Farmers have never had this option, and it is actually a revolution.

Even if we do nothing else particularly clever, that alone will bail our sorry asses out without anyone else lifting a finger. After all, manufacturing high quality soil will have an immediate and direct effect on farm income.

And yes girls, the climate is now apparently at its warmest since just before the Little Ice Age and since the Bronze age. That is the problem. We know for sure that this is not an unique anomalous event and does not have to be linked to anything.

In my province, the advent of a warmer climate has triggered a mass die off of the interior pine forest as the mountain pine beetle population takes off. It will all run out in about ten years and fall back to normal as new trees fill the niche. In the meantime, we are harvesting as much as possible. And if we are really clever, we will burn off what we cannot harvest to stimulate good new growth without a lot of fire wood lying around.

More importantly it is even much warmer in the high latitudes. I saw last night a report on a chap who has been measuring the temperature regime on the Greenland icecap. In a period of perhaps thirty years , he has found an increase of around five degrees Celsius. I do not want to comment on what that will actually mean and what is happening on the entirety of the icecap. It is far too easy to be on the edge were things are going quite fast, while inland at higher elevations very little is changing.

The true question to ask is, what is happening at the location of the ice cores. Likely nothing, since these areas were chosen for their accumulation ability.

Certainly we can expect the southern edges of the icecap to retreat exposing more land. I think though that that will be essentially it. It also will take hundreds of years to properly stabilize if our current temperature regime is maintained.

And I still keep wondering what triggers a major injection of cold water into the South Atlantic.