Slashdot Mirror


Analyzing Climate Change On Carbon Rich Peat Bogs

eldavojohn writes "A new report (PDF) from Climate Central shows that climate change has been affecting some states more than others for the past 100 years. As you can see from a video released by NASA, things have become most problematic since the 70s. Among the states most affected is Minnesota, where moose populations are estimated to have dropped 50% in the past six years. Now the U.S. Department of Energy is spending $50 million on a massive project at the Marcell Experimental Forest to build controlled sections of 36 feet wide and 32 feet tall transparent chambers over peatland ecosystems. Although peat bogs only account for 3% of Earth's surface, they contain over 30% of carbon stored in soil. They aim to manipulate these enclosures to see the effects of warming up to 15 degrees, searching for a tipping point and also observing what new ecosystems might arise. The project hopes to draw attention and analysis from hundreds of scientists and researchers around the globe."

2 of 163 comments (clear)

  1. Re:Like they need another alarmist plot point by jo_ham · · Score: 5, Informative

    Atmospheric CO2 partial pressure is at an all time high (post industrial revolution) for as far back as we can measure.

    You contradict yourself - first you say that deep ice core data shows that temperature rises and atmospheric CO2 concentrations are linked, then you claim that "no one has proven ... if they just happen to appear together". I'll save you the trouble - the former is the accurate statement, although it's not exclusive to CO2; any molecule that absorbs IR in the atmosphere is a greenhouse gas, which makes the biggest culprits CO2 and water vapour. There are many others that are considerably worse than CO2 (hundreds, sometimes thousands of times more potent as IR absorbers) that are mitigated by low concentrations.

    It's very easy to demonstrate with a simple science experiment that you can do yourself at home with a plastic bottle, a thermometer, a stopwatch and a lamp. Seal the bottle then point the lamp at it and leave it for 10 minutes. Measure the temperature inside after this time has elapsed. Now open the bottle and breathe in and out, sealing your mouth around the neck for as long as you can manage it (until all the oxygen is gone) - ie, vastly increase the concentration of CO2 and water vapour inside the bottle. Seal it up and then wait for the temperature inside to fall to the same level as the air was in the first experiment (your breath will obviously be warm, so you want to start from the same air temperature). When it's back to the same level turn the lamp on and wait another 10 minutes and record the temperature. Record your results.

    The chemistry of IR absorbing gasses is not controversial. It only seems to be when it's politically inconvenient. Suddenly the idea that CO2 absorbs IR radiation just because it's in the earth's atmosphere rather than in a lab setting is "merely anecdotal".

    Most radiation that falls on the earth *is* reflected (our albedo is quite high), and even then, much of the re-radiated IR from the earth's surface is also lost to space - this is not new or controversial information.

    "We need to understand climates change and there is absolutely nothing we can do about it" is probably the most hilariously inaccurate and naive statement I think I've ever read on slashdot. Not only is it one of the most ridiculous "head in the sand" conclusions drawn from a fundamental misunderstanding of basic science (if the first part of the comment is anything to go by), but it's contradicted by extensive evidence to the contrary by a number of widely famous examples. The most obvious of these would be the depletion (and subsequent re-establishment) of the ozone layer and the corresponding changes to the climate that were observed and reversed in response to human actions.

    If all the people on earth disappeared the climate would indeed continue to change in response to events that occur - the only difference is that there would be no further changes from anthropogenic factors. The fact that it responds to natural changes does not mean that humans have no effect on it. Again, you seem to misunderstand the way that the climate works.

  2. Re:Somewhat welcome news by NeutronCowboy · · Score: 5, Informative

    and even the NH ice coverage is within a fingernail's width of the thirty year mean.

    Wrong.

    When (no matter what) the sea level isn't going to suddenly jump ten centimeters in a decade (where at most 1-2 cm is a lot more likely)

    Strawman

    the measured bond albedo of the Earth has increased by 7% over the last fifteen years,

    Mistaking cycles for linear trends

    which corresponds to a roughly 2 C temperature drop due to reduced net insolation "off the top" as it were.

    Total lack of data for that statement. I'm willing to check out any support you have, but just as a warning, a 2 C change due to change in bond albedo is basically impossible just based on the temperature data we have.

    looking out the window at the water in Beaufort NC, where the tidal levels haven't significantly changed for years).

    Yes, because eye-balling a waterline trumps actual measurements taken over the course of decades, and where significant seems to mean something completely different to you than to oceanographers - or anyone working with oceans.

    Yes, you've indeed admirably proven your position with sources that are peer-reviewed, based on multiple and independent data sets, and you have demonstrated a strong understanding of basic physics, scientific principles and research methodology. /sarcasm

    --
    Those who can, do. Those who can't, sue.