title: Regional Kendall test for trend.
abstract: Trends in environmental variables are often investigated within a study region at more than one site. At each site, a trend analysis determines whether a trend has occurred. Yet often also of interest is whether a consistent trend is evident throughout the entire region. This paper adapts the Seasonal Kendall trend test to determine whether a consistent regional trend occurs in environmental variables.
authors.affiliation: U.S. Geological Survey, P. O. Box 25046, MS 964, Lakewood, Colorado 80225, USA. dhelsel@usgs.gov
authors.forename: Dennis R
authors.initials: DR
authors.lastname: Helsel
authors.forename: Lonna M
authors.initials: LM
authors.lastname: Frans
mesh_terms: D004784:Environmental Monitoring / Q000379:methods*; D005843:Geography; D009566:Nitrates / Q000032:analysis; D012621:Seasons; D018709:Statistics, Nonparametric; D014867:Water / Q000737:chemistry
chemical_list: D009566:Nitrates; D014867:Water