Explain the sources of palaeoclimatic data

Paleoclimatology data are derived from natural sources such as tree rings, ice cores, corals, and ocean and lake sediments. These proxy climate data extend the archive of weather and climate information hundreds to millions of years. The data include geophysical or biological measurement time series and some reconstructed climate variables such as temperature and precipitation.

NCEI provides the paleoclimatology data and information scientists need to understand natural climate variability and future climate change. NCEI also operates the World Data Service for Paleoclimatology, which archives and distributes data contributed by scientists around the world.

Paleoclimate data are scattered by region and discipline and paleoclimate-related studies are being conducted in many subject areas. Sources of paleoclimate data include tree-rings, lake and bog sediments, ice cores, marine sediments, and historical records. Diverse ____ ___ ______ ____ _____ ________ ____ ______.
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