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Yes, the central England temperature series (CET). Now run by the met office, it goes back to 1659. There is no scientific doubt about the roman and medieval w

by brc 11y ago

Yes, the central England temperature series (CET). Now run by the met office, it goes back to 1659. There is no scientific doubt about the roman and medieval warm periods being as warm or warmer than today. The anthropological evidence of this is abundant, and it shows up in most proxies as well. The most likely case is that the natural variations swamp whatever changes humans make. Based on evidence, it's unlikely that co2 is a major driver of climate, but more of a minor player that has a ceiling on how much effect it can make.

TheOtherHobbes 11y ago
Amply and persistently debunked. See e.g. http://www.scientificamerican.com/article/seven-answers-to-climate-contrarian-nonsense/ http://www.scientificamerican.com/article/seven-answers-to-c...
- brc 11y ago
  Which part? Are you saying the roman or medieval warm periods dont exist?
  - orf 11y ago
    The "It was warm 1000 years ago, so climate change is a lie" bit. Choice quote from the link: > "Even if the world were incontrovertibly warmer 1,000 years ago, it would not change the fact that the recent rapid rise in CO2 explains the current episode of warming more credibly than any natural factor does—and that no natural factor seems poised to offset further warming in the years ahead."
    - brc 11y ago
      I didn't write any of that. You have inserted words into my argument and then gone on to debate something I didn't say. There is no scientific argument about the fact that the roman and medieval periods were as warm or warmer than today, because there is a lot of evidence. Even the linked article acknowledged this fact.
      - yongjik 11y ago
        The graphs I found seem to disagree... https://www.skepticalscience.com/medieval-warm-period.htm https://www.skepticalscience.com/medieval-warm-period.htm http://www.ncdc.noaa.gov/paleo/globalwarming/medieval.html http://www.ncdc.noaa.gov/paleo/globalwarming/medieval.html > The various studies differ in methodology, and in the underlying paleoclimate proxy data utilized, but all reconstruct the same basic pattern of cool "Little Ice Age", warmer "Medieval Warm Period", and still warmer late 20th and 21st century temperatures.

by brc 11y ago

TheOtherHobbes 11y ago

Amply and persistently debunked. See e.g. http://www.scientificamerican.com/article/seven-answers-to-climate-contrarian-nonsense/ http://www.scientificamerican.com/article/seven-answers-to-c...

brc 11y ago
Which part? Are you saying the roman or medieval warm periods dont exist?
- orf 11y ago
  The "It was warm 1000 years ago, so climate change is a lie" bit. Choice quote from the link: > "Even if the world were incontrovertibly warmer 1,000 years ago, it would not change the fact that the recent rapid rise in CO2 explains the current episode of warming more credibly than any natural factor does—and that no natural factor seems poised to offset further warming in the years ahead."
  - brc 11y ago
    I didn't write any of that. You have inserted words into my argument and then gone on to debate something I didn't say. There is no scientific argument about the fact that the roman and medieval periods were as warm or warmer than today, because there is a lot of evidence. Even the linked article acknowledged this fact.
    - yongjik 11y ago
      The graphs I found seem to disagree... https://www.skepticalscience.com/medieval-warm-period.htm https://www.skepticalscience.com/medieval-warm-period.htm http://www.ncdc.noaa.gov/paleo/globalwarming/medieval.html http://www.ncdc.noaa.gov/paleo/globalwarming/medieval.html > The various studies differ in methodology, and in the underlying paleoclimate proxy data utilized, but all reconstruct the same basic pattern of cool "Little Ice Age", warmer "Medieval Warm Period", and still warmer late 20th and 21st century temperatures.