Australian gridded chloride deposition-rate dataset
DATA IN BRIEF(2022)
摘要
Chloride deposition-rate measurements at points within Australia are upscaled to the entire continent on a regular 0.05 degrees grid. The upscaling uses a double-exponential correlation between deposition rate and distance to the coast, where the parameters in the double-exponential are spatially varying. These parameters are estimated using least-squares with Tikhonov regularisation to ensure minimal spatial variability. A calibration-constrained, null-space Monte-Carlo analysis is used to quantify uncertainty in the prediction. The resulting dataset consists of the best-fit chloride deposition rates across Australia, as well as estimates of uncertainty. The dataset can be used for various purposes including: estimating groundwater recharge through the use of the chloride mass-balance method; catchment salt balance estimates; regional investigations of groundwater hydrochemistry; and, corrosion prediction. (C) 2022 The Author(s). Published by Elsevier Inc.
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关键词
Atmospheric chemistry, Chloride mass balance, Groundwater recharge, Hydrochemistry, Rainfall
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