On assignment to the Atmospheric Research and Exposure Assessment Laboratory, US Environmental Protection Agency.
Recent frost date trends in the north-eastern USA†
Article first published online: 18 JAN 2007
Copyright © 1995 John Wiley & Sons, Ltd
International Journal of Climatology
Volume 15, Issue 1, pages 65–75, January 1995
How to Cite
Cooter, E. J. and Leduc, S. K. (1995), Recent frost date trends in the north-eastern USA. Int. J. Climatol., 15: 65–75. doi: 10.1002/joc.3370150108
The information in this document has been funded by the US Environmental Protection Agency. It has been subjected to Agency review and approved for publication. Mention of trade names or commercial products does not constitute endorsement or recommendation for use.
- Issue published online: 18 JAN 2007
- Article first published online: 18 JAN 2007
- Manuscript Accepted: 15 FEB 1994
- Manuscript Received: 2 AUG 1993
- Frost dates;
- Trend discontinuities;
- Frost impacts;
- Regional trend analysis;
- North-east USA
Uncertainty in projections of future climate, along with a need for policy makers and management to respond to change in climate, highlight the importance of the detection of trends in climatological time series. Selected indicators of regional climate status and change may well be related to indicators of ecological condition. Climate factors are known to stress ecosystems. With the identification and description of trends in biologically important climate descriptors this knowledge could be used to provide scenarios of biological changes. One aspect of climate which stresses forest ecosystems is described by the annual date of the last hard spring-freeze (minimum temperature ⩽ −2·2°C). Averaged for New England, there was a significant linear trend indicating an earlier initiation of frost-free conditions (negative slope) for the period 1961–1990.
Significant time trends were detected locally at stations throughout much of the New England regions as well. Temporal discontinuities in trend, spatial relationships, and urban influence were considered. The presence of trends in time does not appear to be related to geographical location. The direction of trend (positive or negative) exhibits some geographical coherency, which may be related to climatological variables such as percentage of possible sunshine and cloud cover.