Claim: The original global temperature schematic which appeared in the IPCC First Assessment Report and seemed to show the Medieval Warm Period (MWP) hotter than Present was based on the central England temperature record, and ended in the 1950s.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: This graph extended the similar graph in Figure 3.20 from the IPCC Second Assessment Report of 1995, and differed from a schematic in the first assessment report that lacked temperature units, but appeared to depict larger global temperature variations over the past 1000 years, and higher temperatures during the Medieval Warm Period than the mid 20th century.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: The schematic was not an actual plot of data, and was based on a diagram of temperatures in central England, with temperatures increased on the basis of documentary evidence of Medieval vineyards in England.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: However, that view was questioned by other researchers; the IPCC First Assessment Report of 1990 discussed the "Medieval Warm Period around 1000 AD (which may not have been global) and the Little Ice Age which ended only in the middle to late nineteenth century."

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: The IPCC First Assessment Report included a "schematic diagram" of global temperature variations over the last thousand years which has been traced to a graph based loosely on Hubert Lamb's 1965 paper.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: The Medieval Warm Period (MWP) also known as the Medieval Climate Optimum, or Medieval Climatic Anomaly was a time of warm climate in the North Atlantic region lasting from c. 950 to c. 1250.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: The Medieval Warm Period (MWP) is generally thought to have occurred from c. 950–c.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: The IPCC First Assessment Report in 1990 noted evidence that Holocene climatic optimum around 5,000-6,000 years ago had been warmer than the present (at least in summer) and that in some areas there had been exceptional warmth during "a shorter Medieval Warm Period (which may not have been global)" about AD 950-1250, followed by a cooler period of the Little Ice Age which ended only in the middle to late nineteenth century.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: Thus current evidence does not support globally synchronous periods of anomalous cold or warmth over this interval, and the conventional terms of "Little Ice Age" and "Medieval Warm Period" appear to have limited utility in describing trends in hemispheric or global mean temperature changes in past centuries.... [Viewed] hemispherically, the "Little Ice Age" can only be considered as a modest cooling of the Northern Hemisphere during this period of less than 1°C relative to late twentieth century levels.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: This was the basis of a "schematic diagram" featured in the IPCC First Assessment Report beside cautions that the medieval warming might not have been global.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: This was the basis of a "schematic diagram" featured in the IPCC First Assessment Report of 1990 beside cautions that the medieval warming might not have been global.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: 1995 saw the creation of the phrase "preventing dangerous anthropogenic interference with the climate system" (also called "avoiding dangerous climate change") first appeared in a policy document of a governmental organization, the IPCC's Second Assessment Report: Climate Change 1995. and in 1996 the European Union adopt a goal of limiting temperature rises to a maximum 2 °C rise in average global temperature.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: "Estimating Changes in Global Temperature since the Preindustrial Period".