OU Study Suggests Non-Uniform Climate Warming Affects Terrestrial Carbon Cycle, Ecosystems and Future Predictions
FOR IMMEDIATE RELEASE
CONTACT: Jana Smith, Director of Strategic Communication for R&D, (405) 325-1322, email@example.com
NORMAN — A recent University of Oklahoma study of five decades of satellite data, model simulations and in situ observations suggests the impact of seasonal diurnal or daily warming varies between global regions affecting many ecosystem functions and services, such as food production, carbon sequestration and climate regulation. The effects of non-uniform climate warming on terrestrial ecosystems is a key challenge in carbon cycle research and for those making future predictions.
Jianyang Xia, a research associate in the OU College of Arts and Sciences, says the impact of non-uniform warming is just one aspect of climate change. Shifts in precipitation and disturbances, such as wildfires, increases in the frequency of extreme temperature events, large year-to-year shifts in temperature and shifts in regional climate zones can be expected as the climate warms. A complete understanding of the consequences of climate change for carbon cycling on land requires insight into the impact of all these changes on the ecosystem.
As this study suggests, the rate of climate warming varies by season and region, and between day and night. A synthesis of air temperature data from across the world reveals a greater rate of warming in winter than in summer in northern and high latitudes, but the inverse is true in some tropical regions.
Also, the data show a decline in the daily temperature range over 51 percent of the globe and an increase over only 13 percent, because night-time temperatures in most locations have risen faster than daytime temperatures.
From the data analyzed, a number of trends emerged in non-uniform climate warming for ecosystem carbon cycling. Spring warming will enhance ecosystem carbon uptake at high latitudes and diminish the magnitude of seasonal temperature change in these regions. Summer and autumn warming are more likely to reduce ecosystem carbon uptake in tropical ecosystems and amplify the magnitude of seasonal temperature change.
The contrasting impacts of day- and night-time warming on plant carbon gain and loss are apparent in many regions. Day warming increases carbon uptake in most areas of tundra and boreal forests but decreases it in most grasslands and deserts. Night warming enhances carbon uptake in arid ecosystems, such as grassland desert but has negative impacts in other regions.
Most of the existing temperature-manipulation experiments relied on continuous and uniform warming, so further research is needed to predict the effects of non-uniform climate warming on terrestrial carbon cycling. A paper on this study was accepted for early online publication on February 23, 2014, by Nature Geoscience. For more detailed information about this study, please contact Jianyang Xia at firstname.lastname@example.org or Yiqi Lou at email@example.com or visit the EcoLab website at http://ecolab.ou.edu.
OU Student Named Goldwater Scholar
NORMAN – University of Oklahoma honors student Matthew Peters has been named a 2018 Goldwater Scholar, placing OU in the top ranks of universities nationally with 53 Goldwater Scholars since the competition began in 1991. The prestigious scholarships are awarded on the basis of potential and intent to pursue research careers in mathematics, the natural sciences or engineering. Read more
OU to Hire Additional Clinical Psychologist
NORMAN—University of Oklahoma President David L. Boren announced Friday that adequate funding would be allocated to hire an additional psychologist at the University Counseling Center in order to further support mental health services for students and alleviate wait times. Read more
OU Radar Team Developing New Technologies for U.S. Navy Next-Generation Radar Systems
NORMAN –A University of Oklahoma Advanced Radar Research Center team is developing new antenna and related technologies for U.S. Navy next-generation radar systems with a two-year, $3.5 million grant from the U.S. Department of Defense, Office of Naval Research. The ARRC research and development program under way is designed to improve the agility and multi-functionality of radio frequency sensors and communication systems, while enabling future implementation on a variety of surfaces and platforms. Read more
OU Faculty Member Appointed Chair of International Astronomical Union Working Group
NORMAN –A University of Oklahoma professor, Steven Gullberg, has been appointed world chair for archeoastronomy by the International Astronomical Union. As chair, Gullberg will work with 31 nations to further the research and global advancement of archeoastronomy and astronomy in culture. Read more
OU Math Professors to Research Active Learning in Undergraduate Math Education
NORMAN –A University of Oklahoma mathematics professor, Milos Savic, has received a two-year, $93,298 grant from the Association of Public and Land-grant Universities to help undergraduate students pursuing science, technology, engineering and mathematics degrees succeed in introductory math courses. Savic and team will use the grant to improve and assess a recently-developed active learning pre-calculus course taught to 1,000 OU students each year. Read more