Cl. Blanchard et Ka. Tonnessen, PRECIPITATION-CHEMISTRY MEASUREMENTS FROM THE CALIFORNIA ACID DEPOSITION MONITORING PROGRAM, 1985-1990, Atmospheric environment. Part A, General topics, 27(11), 1993, pp. 1755-1763
The configuration of the California Acid Deposition Monitoring Program
(CADMP) precipitation network is described and quality assurance resu
lts summarized. Comparison of CADMP and the National Acid Deposition P
rogram/National Trends Network (NADP/NTN) data at four parallel sites
indicated that mean depth-weighted differences were less than 3 mueq l
-1 for all ions, being statistically significant for ammonium, sulfate
and hydrogen ion. These apparently small differences were 45-30% of t
he mean concentrations of ammonium, sulfate and hydrogen ion. Mean dep
th-weighted concentrations and mass deposition rates for the period 19
85-1990 are summarized; the latter were highest either where concentra
tions or precipitation depths were relatively high.