Spring onset variations and trends in the continental United States: past and regional assessment using temperature-based indices

Arctic warming, increasing snow cover and widespread boreal winter cooling

(2012) Judah L Cohen et al.   Environmental Research Letters

From Caprio's lilacs to the USA National Phenology Network

(2012) Mark D Schwartz et al.   FRONTIERS IN ECOLOGY AND THE ENVIRONMENT

Digital herbarium archives as a spatially extensive, taxonomically discriminate phenological record; a comparison to MODIS satellite imagery

(2012) Isaac W. Park   INTERNATIONAL JOURNAL OF BIOMETEOROLOGY

Mechanisms Contributing to the Warming Hole and the Consequent U.S. East–West Differential of Heat Extremes

(2012) Gerald A. Meehl et al.   JOURNAL OF CLIMATE

The role of changes in the annual cycle in earlier onset of climatic spring in northern China

(2011) Cheng Qian et al.   ADVANCES IN ATMOSPHERIC SCIENCES

Reconstruction of false spring occurrences over the southeastern United States, 1901–2007: an increasing risk of spring freeze damage?

(2011) Garrett P Marino et al.   Environmental Research Letters

Northern Hemisphere Modes of Variability and the Timing of Spring in Western North America

(2011) Toby R. Ault et al.   JOURNAL OF CLIMATE

Climatic Variability Leads to Later Seasonal Flowering of Floridian Plants

(2010) Betsy Von Holle et al.   PLoS One

Attribution of the Seasonality and Regionality in Climate Trends over the United States during 1950–2000

(2008) Hailan Wang et al.   JOURNAL OF CLIMATE