Difficulties in Deducing Temporal Changes in Precipitation Chemistry from Snow and Ice Cores: The Spatial Variability Problem | Zendy

Richard C. Metcalf | Zendy; David V. Peck | Zendy

Open Access

Difficulties in Deducing Temporal Changes in Precipitation Chemistry from Snow and Ice Cores: The Spatial Variability Problem

Author(s) -

Richard C. Metcalf,

David V. Peck

Publication year - 1990

Publication title -

hydrology research

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.665

H-Index - 48

eISSN - 1996-9694

pISSN - 0029-1277

DOI - 10.2166/nh.1990.0022

Subject(s) - snow , spatial variability , ice core , precipitation , sampling (signal processing) , geology , atmospheric sciences , climatology , environmental science , meteorology , geomorphology , geography , mathematics , statistics , filter (signal processing) , computer science , computer vision

Depth profiles of chemical impurities found in snow and ice have usually been interpreted simply in terms of temporal changes in atmospheric concentrations of the species of interest. Measurements of pH and conductivity from individual snow stratigraphic layers sampled above 2,600 metres indicate local spatial variation sufficiently large to potentially mask temporal changes inferred from depth profiles. A method is presented for calculating the number of samples of a given stratigraphic layer necessary to achieve the required precision about the mean pH in a vertical ice profile

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