Download The Findit App

Share Your Posts On These Major Social Networks

Instatag Your Posts to Instagram Facebook + Twitter

News

The Global Medieval Warm Period

Center for the Study of Carbon Dioxide and Global Change. "The Global Medieval Warm Period.” Last modified October 30, 2014. http://www.co2science.org/subject/g/summaries/globalmwp.php.

Salt Lake City 11/21/2014 10:03:43 PM

Between the 10th and 14th centuries AD, earth's average global temperature may have been warmer than it is today, according to the analyses of Lamb (1977, 1984, 1988) and Grove (1988). The existence of this Medieval Warm Period was initially deduced from historical weather records and proxy climate data from England and Northern Europe. Interestingly, the warmer conditions associated with this interval of time are also known to have had a largely beneficial impact on earth's plant and animal life. In fact, the environmental conditions of this time period have been determined to have been so favorable that it was often referred to as the Little Climatic Optimum (Imbrie and Imbrie, 1979; Dean, 1994; Petersen, 1994; SerreBachet, 1994; Villalba, 1994). 
The degree of warming associated with the Medieval Warm Period varied from region to region; and, hence, its consequences were manifested in a number of different ways (Dean, 1994). In Europe, temperatures reached some of the warmest levels of the last 4,000 years, allowing enough grapes to be successfully grown in England to sustain an indigenous wine industry (Le Roy Ladurie, 1971). Contemporaneously, horticulturists in China extended their cultivation of citrus trees and perennial herbs further and further northward, resulting in an expansion of their ranges that reached its maximum extent in the 13th century (De'er, 1994). Considering the climatic conditions required to successfully grow these species, it has been estimated that annual mean temperatures in the region must have been about 1.0 °C higher than at present, with extreme January minimum temperatures fully 3.5 °C warmer than they are today (De'er, 1994). 
In North America, tree-ring chronologies from the southern Canadian Rockies have provided evidence for higher treelines and wider ring-widths between AD 950 and 1100, suggesting warmer temperatures and more favorable growing conditions (Luckman, 1994). Similar results have been derived from tree-ring analyses of bristlecone pines in the White Mountains of California, where much greater growth was recorded in the 11th and 12th centuries (Leavitt, 1994). By analyzing 13C/12C ratios in the rings of these trees, it was also found that soil moisture conditions were more favorable in this region during the Medieval Warm Period (Leavitt, 1994). Simultaneous increases in precipitation were additionally found to have occurred in monsoonal locations of the United States desert southwest, where there are indications of increased lake levels from AD 700-1350 (Davis, 1994). 

More News

https://s3.amazonaws.com/findit-pictures/19221/1779165_19221_160115073943

The Influence of CO2 on Plant Antioxidants

Center for the Study of Carbon Dioxide and Global Change. "The Influence of CO2 on Plant Antioxidants.” Last modified January 8, 2015. http://www.co2science.org/subject/a/summaries/antioxidants.php.

Released On: 1/16/2015
Views: 6243

View
https://s3.amazonaws.com/findit-pictures/19221/1771807_19221_050115011904

Health Effects of Hot Vs Cold Temperatures in Asia

Health Effects of Hot Vs Cold Temperatures in Asia.

Released On: 1/5/2015
Views: 6478

View
https://s3.amazonaws.com/findit-pictures/19221/1767800_19221_291214123540

Coral Reef Responses to Temperature Stress: Thermal Adaptation

Coral Reef Responses to Temperature Stress: Thermal Adaptation. As living entities, corals are not only acted upon by the various elements of their environment,they also react or respond to them.

Released On: 12/29/2014
Views: 6123

View
https://s3.amazonaws.com/findit-pictures/19221/1767752_19221_291214111658.jpg

Forest Growth Response to CO2

Forest Growth Response to CO2. By examining various properties of tree rings, researchers can deduce how historical increases in the air's CO2 concentration have already affected tree productivity and water use efficiency.

Released On: 12/29/2014
Views: 4726

View
https://s3.amazonaws.com/findit-pictures/19221/1767751_19221_291214110504.jpg

Onward Marches the Great Pause

Onward Marches the Great Pause. Since October 1996 there has been no global warming at all (Fig. 1).

Released On: 12/29/2014
Views: 3785

View
https://s3.amazonaws.com/findit-pictures/19221/1752698_19221_081214123011.jpg

RESPONSE OF VARIOUS MARINE ANIMALS TO OCEAN ACIDIFICATION AND WARMING

RESPONSE OF VARIOUS MARINE ANIMALS TO OCEAN ACIDIFICATION AND WARMING.

Released On: 12/8/2014
Views: 3406

View
https://s3.amazonaws.com/findit-pictures/19221/1752697_19221_081214121522.jpg

FACE EXPERIMENTS AND GRASSLAND SPECIES

FACE EXPERIMENTS AND GRASSLAND SPECIES.

Released On: 12/8/2014
Views: 3997

View
https://s3.amazonaws.com/findit-pictures/19221/1752696_19221_081214114115.jpg

EFFECTS OF OCEAN ACIDIFICATION ON FISH

EFFECTS OF OCEAN ACIDIFICATION ON FISH.

Released On: 12/8/2014
Views: 4035

View
https://s3.amazonaws.com/findit-pictures/19221/1741944_19221_211114021804.jpg

Response of Fish to Ocean Warming

Response of Fish to Ocean Warming. According to the IPCC, CO2-induced global warming will be net harmful to the world's marine species.

Released On: 11/21/2014
Views: 3959

View
https://s3.amazonaws.com/findit-pictures/19221/1741943_19221_211114021100.jpg

Long-Term Open-Top-Chamber Study of Sour Orange Trees

Long-Term Open-Top-Chamber Study of Sour Orange Trees. Eight 30-cm-tall sour orange tree (Citrus aurantium L.) seedlings were planted directly into the ground at the Agricultural Research Service's U.S. Water Conservation Laboratory in Phoenix, A ...

Released On: 11/21/2014
Views: 3990

View
https://s3.amazonaws.com/findit-pictures/19221/1741902_19221_211114020343

The Global Medieval Warm Period

The Global Medieval Warm Period. Between the 10th and 14th centuries AD, earth's average global temperature may have been warmer than it is today.

Released On: 11/21/2014
Views: 3762

View
https://s3.amazonaws.com/findit-pictures/19221/1701566_19221_300914015604

Growth Rates of Old versus Young Forest Trees

Growth Rates of Old versus Young Forest Trees. The planting and preservation of forests has long been acknowledged to be an effective and environmentally-friendly means for slowing climate-model-predicted CO2-induced global warming.

Released On: 9/30/2014
Views: 4050

View
https://s3.amazonaws.com/findit-pictures/19221/1701354_19221_300914102740

Tropical Trees

Citation: Center for the Study of Carbon Dioxide and Global Change. "Tropical Trees.”

Released On: 9/30/2014
Views: 4075

View
https://s3.amazonaws.com/findit-pictures/19221/1701356_19221_300914105354

Water Use Efficiency of Agricultural Species

Water Use Efficiency of Agricultural Species.

Released On: 9/30/2014
Views: 4012

View
https://s3.amazonaws.com/findit-pictures/19221/1689629_19221_120914021236

GLOBAL TEMPERATURES AND BIOSPHERIC PRODUCTIVITY

Global temperatures and biospheric productivity. Among the many climate-alarmist fears of CO2-induced global warming is the concern that the productivity of the biosphere will decline if global temperatures rise to the extent predicted by compute ...

Released On: 9/13/2014
Views: 3975

View
https://s3.amazonaws.com/findit-pictures/19221/1689623_19221_120914020343

REWRITING SUNSPOT HISTORY

Rewriting sunspot history. In 2006, when I first made the mistake of writing publicly of my doubts about the Party Line on manmade global warming.

Released On: 9/13/2014
Views: 4025

View
https://s3.amazonaws.com/findit-pictures/19221/1689620_19221_120914015840

ANALYSIS OF THE SECOND ORDER DRAFT OF THE WORKING GROUP I CONTRIBUTION TO IPCC 5AR

ANALYSIS OF THE SECOND ORDER DRAFT OF THE WORKING GROUP I CONTRIBUTION TO IPCC 5AR. The preparation of IPCC Assessment Reports involves several stages.

Released On: 9/13/2014
Views: 3863

View
https://s3.amazonaws.com/findit-pictures/19221/1689615_19221_120914015244

THE ECONOMICS OF BIOFUELS

The economics of biofuels. Aside from rejecting biofuel expansion and use for environmental reasons.

Released On: 9/13/2014
Views: 3719

View
Load More wait