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etudiant

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Everything posted by etudiant

  1. Afaik, the Vostok core show that CO2 lags the temperature changes by several hundred years. Obviously there are lots of issues, whether CO2 chemistry/diffusion in the ice biases the results, but it does raise a flag. My understanding is that water vapor is by far the dominant green house gas here on earth and that we live thanks to the peculiarities of the H2O molecule. That leaves me reluctant to endorse CO2 as the primary driver for earth temperature.
  2. The Central Park site is sheltered to the north by the Belvedere Castle and surrounded by deciduous trees and shrubs. I'd think both temperature and wind measurements there would be impacted. There is additional instrumentation mounted on the Castle, but for what purpose is not known. I personally think the site is foolishly hostile to visitors, hiding in the shrubbery, unmarked and behind a chain link fence, with various instruments resting on a crushed stone base. It almost invites vandalism. The siting seems especially poor considering that this is a also place where literally millions of kids and other visitors pass by annually. A little bit of signage to document what the instrumentation is used for and perhaps some training of the volunteer guides that work at the Castle would be much more protective of the instrumentation and help spark interest and understanding among the public.
  3. What 'more authentic/reliable indicators' do you have in mind?? If there were any, I suspect that they would be greatly studied and analyzed. Sadly, we have not found any thus far, afaik.
  4. The arctic is literally on FIRE with 2,3000,0000 hectares burning and counting. Almost ALL of greenland is forecasted to go above freezing. Ice thickness plummeting. Near record low extent. The environment is flashing red alarm bells and we still argue if global warming is happening. Absolutely mind boggling. This post would be more persuasive if SN_Lover took the time to proofread his own posts and perhaps to relate the current data to the historical record. As is, it comes across as overwrought at best, if not trolling.
  5. Sadly there is no reliable skill demonstrated by any of the longer term forecasting models, at least afaik. The ludicrous month to month temperature switch for the DJF period recently shown by the JAMSTEC underscores the total lack of any such credible forecasts. JAMSTEC is a decent model and the people driving it are not beholden to the prevailing fads, but the reality remains that their long term forecasts are subject to massive change from month to month. That makes them useless operationally imho.
  6. I thought it was a useful call. Storms can and do pop up almost out of nowhere and we dismiss potential seeds at our peril. Meanwhile, am glad the NHC has now taken note.
  7. A momentary splash in Central Park, perhaps the usual 1/100th", in about 1 minute. It did not break the heat at all.
  8. Simultaneously, this indication of thick ice north of Svalbard. http://maritimebulletin.net/2019/07/19/icebreaker-turned-back-encountering-heavy-ice-in-ice-free-arctic/ So the ice conditions are quite variable. That however does not preclude a record low this season.
  9. The Conservancy runs the Park, because they provide over 75% of the money. So they set the priorities, which are to make the Park as attractive to everyone as possible. That means mosquitoes and biting flies are unwanted, as are caterpillars dangling from the trees. Unfortunately, the cheapest way to fight such 'pests' are broad spectrum insecticides, so there is a lot of collateral damage. Not sure how to fix this. Ideally, the Conservancy would add a priority for natural habitat preservation, with success measured by the number of breeding species rather than only the number of human visitors.
  10. Lucky you! Here in NYC Central Park, we rejoice when we see a few Monarchs and Red Admirals. Diligent pest control spraying pretty much kills everything, although I'm delighted to note the fireflies this year are numerous. Long may they all flourish!
  11. There is logic in the decision to retain the Central Park benchmark. The aim is to report the weather rather than to measure urban heat island effects. I have no doubt that the concrete jungles we live in are hotter than the relatively green acres of Central Park, but that does not make the Central park data 'flawed'.
  12. Then you remember to add the lightning protection and pretty soon you need an electrician. Roof tripods are not that simple.
  13. Perhaps the difference reflects definitional parameters? One is Arctic Basin only, the other possibly the AMSR2 total area? Hard to discuss when the data is inconsistent. Just seems that Arctic ice is a topic where every detail has to be agreed, is it area, is it extent, is it volume, what coverage percent is included, are the land masks constant etc etc.
  14. They hatch when it rains a lot.
  15. Prepare to be disappointed. Very few really dedicated suppliers have survived the wave of cheaper imports. I don't know whom I would trust to deliver a reliable system today.
  16. Have to say that the data strongly suggests a declining trend for arctic ice. Possibly this is a cyclical phenomenon, which will reverse at some future date. Historical records from the 1920s suggest a similar warm cycle has been seen before. Nevertheless, absent any identifiable mechanism to reverse the current warming, it seems reasonable to expect the 2012 lows will be broken, possibly this year. Forkyfork makes a very strong argument that the recent increase in extent reflects fragmentation of previously solid ice pack, which sets the stage for enhanced melting of the shattered ice. With the maximum melt still more than 2 months away, the odds are shifting towards a new record low imho.
  17. They do gradually lose charge over time, but they should recharge properly once plugged in. The recharge process is not 100% efficient, so the issue is more the number of recharges than the time since manufactured.
  18. South East Arizona would bring it all back for you. In fact, there is a whole astronomy community near the Chiricahuas, along the road to Portal, with many homes built around observatories. No lights, no clouds, just you and the stars in the desert.
  19. Au contraire! A consensus prediction is pretty worthless, we make progress when things go different from what everyone expects and we reappraise. Of course it is always easier to burn the deniers at a stake....
  20. Not a gardener, but the Goog suggests verbena, marigold and geraniums.
  21. That's why we have federally subsidized flood insurance, can't have dumb nature interfere with our right to build anywhere we want to...
  22. Battery replacement is straightforward and explained in the user manual, with illustrations, so you will have no trouble. Do note that this unit takes 2 batteries, model RB1290A. It is good practice to replace them both together, that way there is not one stronger than the other. The user manual, actually more like the user sheet, is here: https://dl4jz3rbrsfum.cloudfront.net/documents/CyberPower_UM_CP1000AVRLCD.pdf
  23. Turning off the UPS when you turn off all the other devices makes sense, it cuts out any risks of voltage surges. The increased battery life is minimal, but it does no harm. Replacing the UPS batteries is really no problem though, plus it is a $50 for the battery vs $250 for a minimally decent new UPS.
  24. Not sure that is sufficient to prove the point. We need to see actual increases in high intensity hurricanes, not just periods of rapid intensification. Otherwise, one is preaching to the choir.
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