- Climate is the average weather across a large region measured over a period of time.
- Climate change means a large change in the climate records of temperature, rainfall, wind speeds. etc lasting decades or longer.
Temperature
In order to piece together weather data from before 1900, scientists analyse sediment cores taken from the ocean and lake floors and from frozen ice cores.
Ice Cores
- Ice Cores are cylinders of ice drilled out of an ice sheet or glacier
- Investigating the physical and chemical make-up of the ice core can tell us of past changes in climate.
- Most Ice cores come from Antarctica or Greenland.
Changes in Global Climate
the average temperatures of the years 1901-2000, average global temperatures have increased over the past decades This is known as Global Warming.
Sixteen hottest years have occurred since the year 2000, with 2016 being the hottest yet.