Claim: From 1970 until 1998 there was a warming period that raised temperatures by about 0.7 F that helped spawn the global warming alarmist movement.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: These isotope changes occurred due to the release of carbon from the ocean into the atmosphere that led to a temperature increase of 4-8 °C (7-14 °F) at the surface of the ocean.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: Currently, surface temperatures are rising by about 0.2 °C per decade.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: An example of such an episode is the slower rate of surface temperature increase from 1998 to 2012, which was dubbed the global warming hiatus.

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: The Paleocene–Eocene thermal maximum was an approximate 200,000 year long event where the global average temperature rose by some 5 to 8 °C (9 to 14 °F), and mid-latitude and polar areas may have exceeded modern tropical temperatures of 24–29 °C (75–84 °F).

Relevance (1 = gold evidence, 0 = mined hard negative): 1
Passage: For comparison, the average global temperature for the period between 1951 and 1980 was 14 °C (57 °F).

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: The average global temperature on Earth has increased by about 0.8° Celsius (1.4° Fahrenheit) since 1880; Two-thirds of the warming has occurred since 1975, at a rate of roughly 0.15-0.20 °C per decade.

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: Warming in the last 100 years has caused about a 0.74 °C increase in global average temperature.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: During the 1970s, scientific opinion increasingly favored the warming viewpoint.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: Since the start of the 20th century, the global mean surface temperature of the Earth has increased by more than 0.7°C and the rate of warming has been largest in the last 30 years.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: The global warming problem came to international public attention in the late 1980s.

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: He said that in the 1960s the media had switched from warning of global warming to warning of global cooling and a coming ice age, then in the 1970s had returned to warming to promote "climate change fears".

Relevance (1 = gold evidence, 0 = mined hard negative): 0
Passage: In 2007 the National Oceanic and Atmospheric Administration stated that the "U.S. and global annual temperatures are now approximately 1.0°F warmer than at the start of the 20th century, and the rate of warming has accelerated over the past 30 years, increasing globally since the mid-1970s at a rate approximately three times faster than the century-scale trend.