section_path: Applied geology/Paleoclimatology
section_name: Paleoclimatology
paragraph_text: Paleoclimatology
  
  Geologists also obtain data through stratigraphy, boreholes, core samples, and ice cores. Ice cores and sediment cores are used for paleoclimate reconstructions, which tell geologists about past and present temperature, precipitation, and sea level across the globe. These datasets are our primary source of information on global climate change outside of instrumental data.