Abstract: One popular and apocalyptic vision of the world influenced by increasing concentrations of infrared-absorbing trace gases is that of ecological disaster brought about by rapidly rising temperatures, sea level, and evaporation ...

Abstract: Four algorithms are given, as a first step toward the practical detection of undocumented multiple changepoints. These algorithms are based on the two-phase regression method of Lund and Reeves, as well as the robust method ...

Abstract: Gaps in otherwise regularly scheduled observations are often referred to as missing data. This paper explores the spatial and temporal impacts that data gaps in the recorded daily maximum and minimum temperatures have on ...

Abstract: Using permafrost boreholes, Lachenbruch and Marshall recently reported evidence for a 2°?4°C warming in North Alaska occurring at some undetermined time during the last century. Popular accounts suggest their findings are ...

Abstract: The Drought Monitor was started in spring 1999 in response to a need for improved information about the status of drought across the United States. It serves as an example of interagency cooperation in a time of limited ...