For the millions of people who live in its expansive coastal areas, Chesapeake Bay provides an important source of income and recreational enjoyment. To protect the ecosystem and the livelihood of area residents, it is important to assess how climate variability and change will affect Chesapeake Bay's shallow water ecosystems and water quality.
The intensity, duration, and frequency of extreme temperature- and precipitation-based events are key components to understanding the climate of Chesapeake Bay.
The Chesapeake Bay area, with Baltimore to the north is shown. Image courtesy NASA Goddard Space Flight Center Landsat Data Continuity Mission Education and Public Outreach team (GSFC LDCM EPO).
NASA Goddard Space Flight Center Landsat Data Continuity Mission Education and Public Outreach team (GSFC LDCM EPO).
Kari Pohl of the Center for Environmental Science at the University of Maryland and colleagues studied these components by calculating 26 extreme climate indices defined by the Expert Team on Climate Change Detection and Indices. She will report their findings at the Annual Meeting of the Geological Society of America on 1 November in Baltimore, Maryland, USA.
"A traditional view of historic climate change is to determine mean annual changes," Pohl explained. "However, organisms do not feel means; they feel the day-to-day variability and extreme events, such as the frequency of warmer-than-normal days."
The goals of the project include reconstructing extreme climate changes from the recent past (1894-2014), using historically referenced data to assess near-future global climate model projections, and to ultimately use this analysis to investigate ecological problems in Chesapeake Bay, such as eelgrass diebacks.
The study saw changes that included an overall decrease in cold events, a higher probability to have a year without a cold spell, and an increase in the annual number of wet days.
These extreme climate indices were strongly correlated to the shallow water environment, including streamflow and water temperature. These linkages will allow insights on how extreme changes could affect environmental boundaries and critical threshold events of vulnerable organisms.
Pohl hopes that studies such as this one "will enhance our general understanding of historical and future extreme climate variability, allowing policy-makers to make better-informed decisions for coastal communities."
Kari Pohl, Center for Environmental Science, University of Maryland
Session No. 54: Restoring the Nation's Largest Estuary: Lessons Learned from Efforts to Address Changes in Water Quality and Ecosystem Structure and Function within the Context of Landscape Change and Climate Variability in the Chesapeake Bay and Its Watershed
Session hyperlink: https:/
Paper No. 10: Chesapeake Bay Climate Extremes and Variability: a Recent Past, Present, and Near Future Analysis
Abstract hyperlink: https:/
WHEN & WHERE:
Sunday, 1 November 2015: 1:30-5:30 PM
Room 308 (Baltimore Convention Center)
Presentation Time: 3:55 PM
The Geological Society of America, founded in 1888, serves more than 27,000 members from academia, government, and industry in more than 100 countries. Through its meetings, publications, and programs, GSA enhances the professional growth of its members and promotes the geosciences in the service of humankind. GSA encourages cooperative research among earth, life, planetary, and social scientists, fosters public dialogue on geoscience issues, and supports all levels of earth science education.
Christa Stratton | EurekAlert!
Greenland ice flow likely to speed up: New data assert glaciers move over sediment, which gets more slippery as it gets wetter
17.08.2017 | Swansea University
Climate change: In their old age, trees still accumulate large quantities of carbon
17.08.2017 | Universität Hamburg
Whether you call it effervescent, fizzy, or sparkling, carbonated water is making a comeback as a beverage. Aside from quenching thirst, researchers at the University of Illinois at Urbana-Champaign have discovered a new use for these "bubbly" concoctions that will have major impact on the manufacturer of the world's thinnest, flattest, and one most useful materials -- graphene.
As graphene's popularity grows as an advanced "wonder" material, the speed and quality at which it can be manufactured will be paramount. With that in mind,...
Physicists at the University of Bonn have managed to create optical hollows and more complex patterns into which the light of a Bose-Einstein condensate flows. The creation of such highly low-loss structures for light is a prerequisite for complex light circuits, such as for quantum information processing for a new generation of computers. The researchers are now presenting their results in the journal Nature Photonics.
Light particles (photons) occur as tiny, indivisible portions. Many thousands of these light portions can be merged to form a single super-photon if they are...
For the first time, scientists have shown that circular RNA is linked to brain function. When a RNA molecule called Cdr1as was deleted from the genome of mice, the animals had problems filtering out unnecessary information – like patients suffering from neuropsychiatric disorders.
While hundreds of circular RNAs (circRNAs) are abundant in mammalian brains, one big question has remained unanswered: What are they actually good for? In the...
An experimental small satellite has successfully collected and delivered data on a key measurement for predicting changes in Earth's climate.
The Radiometer Assessment using Vertically Aligned Nanotubes (RAVAN) CubeSat was launched into low-Earth orbit on Nov. 11, 2016, in order to test new...
A study led by scientists of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg presents evidence of the coexistence of superconductivity and “charge-density-waves” in compounds of the poorly-studied family of bismuthates. This observation opens up new perspectives for a deeper understanding of the phenomenon of high-temperature superconductivity, a topic which is at the core of condensed matter research since more than 30 years. The paper by Nicoletti et al has been published in the PNAS.
Since the beginning of the 20th century, superconductivity had been observed in some metals at temperatures only a few degrees above the absolute zero (minus...
16.08.2017 | Event News
04.08.2017 | Event News
26.07.2017 | Event News
18.08.2017 | Life Sciences
18.08.2017 | Physics and Astronomy
18.08.2017 | Materials Sciences