B051-0012
No trends in spring and autumn phenology during the global warming hiatus

Thursday, 10 December 2020
Poster
Xufeng Wang, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China, Jingfeng Xiao, University of New Hampshire Main Campus, Durham, NH, United States, Xin Li, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, China, Guodong Cheng, State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China, Mingguo Ma, Southwest University, School of Geographical Sciences, Chongqing, China, Muhammad Altaf Arain, McMaster University, Hamilton, ON, Canada, Thomas A Black, University of British Columbia, Soil Science, Vancouver, BC, Canada and Rachhpal Jassal, University of British Columbia, Biometeorology and Soil Physics Group, Vancouver, BC, Canada
Abstract:
Phenology plays a fundamental role in regulating photosynthesis, evapotranspiration, and surface energy fluxes and is sensitive to climate change. The global mean surface air temperature data indicate a global warming hiatus between 1998 and 2012, while its impacts on global phenology remains unclear. Here we use long-term satellite and FLUXNET records to examine phenology trends in the northern hemisphere before and during the warming hiatus. Our results based on the satellite record show that the phenology change rate slowed down during the warming hiatus. The analysis of the long-term FLUXNET measurements, mainly within the warming hiatus, shows that there were no widespread advancing (or delaying) trends in spring (or autumn) phenology. The lack of widespread phenology trends partly led to the lack of widespread trends in spring and autumn carbon fluxes. Our findings have significant implications for understanding the responses of phenology to climate change and the climate-carbon feedbacks.
<< Previous Abstract | Next Abstract >>