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CLIMAS provides information on how scientists use “climate proxies” to reconstruct past events, and a tool that allows users to visualize the climate variability during the past 1,000 years or so i

Selected research papers, reports, and other resources which show the current state-of-knowledge and the progress in our understanding of the variability of climate and hydrology in the Colorado Ri

The Living Blended Drought Product (LBDP) is a recalibrated data series of June-July-August Palmer Modified Drought Index (PMDI) values by United States climate division, compiled by blending tree-

The OWDA provides new data to determine the causes of Old World drought and wetness and attribute past climate variability to forced and/or internal variability.