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Summary of rainfall recharge measurements with lysimeters and ground-level rainfall observations 1952-1978 and 1997-2011, Canterbury

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    White, P.A.; Moreau-Fournier, M.; Thorpe, H.R.; Lovett, A. 2014 Summary of rainfall recharge measurements with lysimeters and ground-level rainfall observations 1952-1978 and 1997-2011, Canterbury. Lower Hutt, N.Z.: GNS Science. GNS Science report 2013/10 26 p. + 1 CD


    Abstract: Measurements of rainfall recharge and rainfall were obtained at four rainfall recharge research sites located in the Canterbury Plains. These measurements were made in two periods. The first period (1952 to 1978) includes data recorded at the Winchmore site in up to six lysimeters. Data at this site was generally measured at irregular intervals, e.g., rainfall recharge was commonly recorded at daily intervals on week days up to about 1973 and at approximately monthly intervals from about 1976. Rainfall recharge in the second period (1997 to 2011) was measured at 15-minute intervals in up to four lysimeters located at Winchmore and two lysimeters located at each of three other sites (Christchurch Airport, Lincoln and Hororata) within a common observation period of 15/04/1999 to 28/03/2011. These measurements were supplemented by rainfall measurements (recorded by a standard rain gauge at Winchmore and by ground-level rainfall recorders at other sites) and potential evapotranspiration estimates calculated from National Institute of Water and Atmospheric Research climate stations at Winchmore, Christchurch Airport, Lincoln, Darfield and Hororata. This report aims to provide a summary of rainfall recharge data in a form that is useful for further research including groundwater model development. Therefore, a compact disc is included with the report with: observations at Winchmore between 1952 and 1978, daily estimates of rainfall recharge variables (i.e., rainfall recharge, rainfall and potential evapotranspiration) at Christchurch Airport, Hororata, Lincoln and Winchmore in the common period and records of snowfall. (auth)

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