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Evaluating the impact of U.S. Historical Climatology Network homogenization using the U.S. Climate Reference Network
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2016
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Source: Geophysical Research Letters, 43(4), 1695-1701
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Journal Title:Geophysical Research Letters
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Description:Numerous inhomogeneities including station moves, instrument changes, and time of observation changes in the U.S. Historical Climatological Network (USHCN) complicate the assessment of long-term temperature trends. Detection and correction of inhomogeneities in raw temperature records havebeen undertaken by NOAA and other groups using automated pairwise neighbor comparison approaches, but these have proven controversial due to the large trend impact of homogenization in the United States. The new U.S. Climate Reference Network (USCRN) provides a homogenous set of surface temperatureobservations that can serve as an effective empirical test of adjustments to raw USHCN stations. By comparing nearby pairs of USHCN and USCRN stations, we find that adjustments make both trends and monthly anomalies from USHCN stations much more similar to those of neighboring USCRN stations for the period from 2004to 2015 when the networks overlap. These results improve our con fidence in the reliability of homogenized
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Source:Geophysical Research Letters, 43(4), 1695-1701
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DOI:
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ISSN:0094-8276;1944-8007;
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Rights Information:Other
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Compliance:Library
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