Washington post online dating statistics and facts
It is the “leading international body for the assessment of climate change,” * The first IPCC report (1990) contains the following graph of average global temperature changes over the past 1,000 years based upon proxies.
It shows a “Medieval warm period” that was warmer than the present era and a “Little Ice Age” that was cooler.
Hopefully it will give some insight into the science and the people behind it.  Look at the instrumental record!
There are huge differences between different regions - Alaska has warmed substantially while eastern North America cooled after the 1950s.
The materials were authored by some of the world’s leading climate scientists and accompanied by the following note: We feel that climate science is too important to be kept under wraps.
We hereby release a random selection of correspondence, code, and documents.
K., the Earth’s average temperature warmed by 1.4ºF (0.8ºC) between the 1850s and 2000s, mostly during 1911-19-1998: * Sources of uncertainty in surface temperature data involve “very incomplete” temperature records in the earlier years, “systematic changes in measurement methods,” “calculation and reporting errors,”       data adjustments that are performed when instruments are moved to different locations, instrument precision, instrument positioning, and missing documentation/raw data.  definitive assessment of uncertainties is impossible, because it is always possible that some unknown error has contaminated the data, and no quantitative allowance can be made for such unknowns. * Oceans constitute about 71% of the Earth’s surface. Changes in air temperature over the world’s oceans are typically based on measurements of water temperature at depths varying from less than 3 feet to more than 49 feet.  This data is combined with changes in air temperature over land areas to produce global averages.  contrasted water and air temperature changes in the tropical Pacific Ocean using three sources of measurements.The report states that: some of the global warming since 1850 could be a recovery from the Little Ice Age rather than a direct result of human activities.