Precipitation Chemistry of the Sevilleta NWR

This data set includes precipitation chemisty from 20 funnel
collectors on the Sevilleta National Wildlife Refuge (NWR). Variables
measured include volume, NO3-N, NH4-N, SO4, Cl, Na, K, Ca, Mg, and PO4
The sample interval depends on the frequency of significant
precipitations events. Documentation of precipitation chemistry;
study design, collection methods, laboratory analytical procedures,
and archived data are contained in this file. Field collection of
precipitation chemistry samples occurred as soon after a significant
precipitation event as possible (usually within a week after the
event). In some cases collection of precipitation chemistry samples
occurred more often than meteorlogical station samples (summer, fall),
and sometimes less often (winter, spring). Precipitation chemistry
samples were collected only when there was enough sample to allow for
complete chemical analysis, (usually greater than 100mls).
After 1995 all samples continued to be collected for volume but only
an a partial set of the samples continued to be analyzed for inorganic
nutrients.