Medieval Warm Period (North America: Canada Plus) -- Summary

April 2014
CO2 Science;4/16/2014, Vol. 17 Issue 16, p2
The article presents the summary of a report on Medieval Warm Period between 690 and 1591 within the borders of Canada and U.S. regions. It references the 1997 D. Arseneault and S. Payette study, the 2000 I. D. Campbell and C. Campbell study on pollen and charcoal records, and the 2001 study led by P. E. Calkin on Alaska. It concludes that the Medieval Warm Period was caused by something quite apart from elevated levels of atmospheric carbon dioxide or any other greenhouse gases.


Related Articles

  • If globe is warming, blame Old Faithful. Catanzaro, Michael // Human Events;01/16/98, Vol. 54 Issue 2, p5 

    Focuses on study findings which identified the Yellowstone National Park as a major contributor to atmospheric carbon dioxide in the United States and among the largest volcanic emitters of carbon dioxide in the world. Estimate on the volume of carbon dioxide released by Yellowstone's Mud...

  • The CO2 lifetime concept should be banished. Tans, Pieter P. // Climatic Change;Nov97, Vol. 37 Issue 3, p487 

    Opinion. Presents the author's view on the concept of atmospheric carbon dioxide emissions. Comparison of emissions of one greenhouse gas to another; Implications of the greenhouse policy; Environmental consequences of policy scenarios.

  • The Stability of the Thermohaline Circulation in Global Warming Experiments. Schmittner, Andreas; Stocker, Thomas F. // Journal of Climate;4/1/99, Vol. 12 Issue 4, p1117 

    A simplified climate model of the coupled ocean--atmosphere system is used to perform extensive sensitivity studies concerning possible future climate change induced by anthropogenic greenhouse gas emissions. Supplemented with an active atmospheric hydrological cycle, experiments with...

  • Earth's hot past offers clues to possible future.  // Geographical (Geographical Magazine Ltd.);Mar2011, Vol. 83 Issue 3, p13 

    The article reports that analysis of the relationship between global temperatures and carbon dioxide in the Earth's deep past indicates that future temperatures could eventually rise higher than projected if greenhouse gas emissions are not lowered.

  • Global Warming Prolongs Sneezin' Season. Potera, Carol // Environmental Health Perspectives;Oct2002, Vol. 110 Issue 10, pA568 

    Discusses results of a research study on how an increase in the level of atmospheric carbon dioxide due to the burning of coal, oil and natural gas will increase the incidence of allergies and asthma. Tendency for plants to produce more pollen when grown under high levels of carbon dioxide;...

  • BY THE NUMBERS.  // Sierra;May/Jun2003, Vol. 88 Issue 3, p15 

    Presents statistics related to environmental protection in the U.S., as of May 2003. Percent increase in atmospheric carbon dioxide over the past century; Number of U.S. states suing the U.S. Environmental Protection Agency for failing to regulate greenhouse gases; Estimated savings for...

  • Uncertainty Requirements in Radiative Forcing of Climate Change. Schwartz, Stephen E. // Journal of the Air & Waste Management Association (Air & Waste M;Nov2004, Vol. 54 Issue 11, p1351 

    The continuing increase in atmospheric carbon dioxide (CO2) makes it essential that climate sensitivity, the equilibrium change in global mean surface temperature that would result from a given radiative forcing, be quantified with known uncertainty. Present estimates are quite uncertain, 3 ±...

  • Atmospheric column-averaged mole fractions of carbon dioxide at 53 aircraft measurement sites. Miyamoto, Y.; Inoue, M.; Morino, I.; Uchino, O.; Yokota, T.; Machida, T.; Sawa, Y.; Matsueda, H.; Sweeney, C.; Tans, P. P.; Andrews, A. E.; Patra, P. K. // Atmospheric Chemistry & Physics;2013, Vol. 13 Issue 10, p5265 

    Atmospheric column-averaged mole fractions of carbon dioxide (XCO2) at 53 locations around the world were derived from aircraft measurements covering the altitude range of about 1-10 km. We used CO2 vertical profile measurements from three major carbon cycle programs, a global climatological...

  • Good news and bad news. Zimmer, Carl // Discover;May94, Vol. 15 Issue 5, p26 

    Discusses the continued concentration of greenhouse gases in the atmosphere. Pessimism over the temporary slowdown of the accumulation of carbon dioxide; International ban on the production of chlorofluorocarbons; Effect of the Mount Pinatubo eruption in the Philippines; Disruption of the...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics