Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:


Researchers find evidence of warming climate in Ohio

-- Summer nights in Ohio aren't cooling off as much as they used to -- and it's likely a sign of climatic warming across the state, researchers say.

Jeffrey Rogers, professor of geography at Ohio State University, led the new study, which found that average summer nighttime low temperatures in Ohio have risen by about 1.7 degrees Celsius (about 3 degrees Fahrenheit) since the 1960s.

Why the change? It's not just the heat, it's the humidity, the researchers concluded -- coupled with increased cloudiness at night.

Three degrees Fahrenheit might not sound like much of an increase, but it is -- even though daytime highs have remained mostly the same, said Rogers, who is also the state climatologist for Ohio.

"A lot of Americans might expect that global climate change would cause extremely high daytime temperatures in the summer," he said. "But in Ohio at least, the high temperatures haven't been changing -- it's the overnight low temperatures that have been creeping up. That means the average temperature over the 24-hour period is creeping up as well."

And this is exactly how Rogers believes that climate change would manifest itself in this region of the Midwest -- nighttime lows are rising, so that over time there would be less difference between them and the daytime highs.

That would mean a big change for Ohio, where a typical summer night is 20 degrees Fahrenheit cooler than the day.

In fact, stronger evidence of climate change would be hard to come by here, Rogers said: "In Ohio, we don't have a clear signal of global change, like you have in the Arctic, where sea ice is melting. But these rising nighttime lows are the next closest thing."

In the September 2007 issue of the Journal of Climate, Rogers and his coauthors report a survey of more than 120 years of Ohio weather data. Aside from a brief temperature spike during the Dust Bowl of the 1930s, nighttime temperatures remained relatively unchanged -- until 1965, when they began to rise.

They linked the change to an increase in a measure of moisture in the air known as specific humidity, which is similar to the dew point. A second factor -- which Rogers thinks may be even more important than the humidity -- is an increase in cloud cover over Ohio since the 1940s.

"The moisture in the air keeps the heat in. It's literally an enhanced greenhouse effect with all that humidity here in the summer," Rogers said. "And at night, cloud cover acts like a blanket and traps heat that would otherwise escape into the atmosphere."

He and his colleagues are still trying to puzzle out why humidity and cloud cover are increasing.

Coauthors on the study included Sheng-Hung Wang, a research associate at the Byrd Polar Research Center at Ohio State, and Jill Coleman, an assistant professor of geography at Ball State University in Indiana.

Jeffrey Rogers | EurekAlert!
Further information:

More articles from Earth Sciences:

nachricht Receding glaciers in Bolivia leave communities at risk
20.10.2016 | European Geosciences Union

nachricht UM researchers study vast carbon residue of ocean life
19.10.2016 | University of Miami Rosenstiel School of Marine & Atmospheric Science

All articles from Earth Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: New 3-D wiring technique brings scalable quantum computers closer to reality

Researchers from the Institute for Quantum Computing (IQC) at the University of Waterloo led the development of a new extensible wiring technique capable of controlling superconducting quantum bits, representing a significant step towards to the realization of a scalable quantum computer.

"The quantum socket is a wiring method that uses three-dimensional wires based on spring-loaded pins to address individual qubits," said Jeremy Béjanin, a PhD...

Im Focus: Scientists develop a semiconductor nanocomposite material that moves in response to light

In a paper in Scientific Reports, a research team at Worcester Polytechnic Institute describes a novel light-activated phenomenon that could become the basis for applications as diverse as microscopic robotic grippers and more efficient solar cells.

A research team at Worcester Polytechnic Institute (WPI) has developed a revolutionary, light-activated semiconductor nanocomposite material that can be used...

Im Focus: Diamonds aren't forever: Sandia, Harvard team create first quantum computer bridge

By forcefully embedding two silicon atoms in a diamond matrix, Sandia researchers have demonstrated for the first time on a single chip all the components needed to create a quantum bridge to link quantum computers together.

"People have already built small quantum computers," says Sandia researcher Ryan Camacho. "Maybe the first useful one won't be a single giant quantum computer...

Im Focus: New Products - Highlights of COMPAMED 2016

COMPAMED has become the leading international marketplace for suppliers of medical manufacturing. The trade fair, which takes place every November and is co-located to MEDICA in Dusseldorf, has been steadily growing over the past years and shows that medical technology remains a rapidly growing market.

In 2016, the joint pavilion by the IVAM Microtechnology Network, the Product Market “High-tech for Medical Devices”, will be located in Hall 8a again and will...

Im Focus: Ultra-thin ferroelectric material for next-generation electronics

'Ferroelectric' materials can switch between different states of electrical polarization in response to an external electric field. This flexibility means they show promise for many applications, for example in electronic devices and computer memory. Current ferroelectric materials are highly valued for their thermal and chemical stability and rapid electro-mechanical responses, but creating a material that is scalable down to the tiny sizes needed for technologies like silicon-based semiconductors (Si-based CMOS) has proven challenging.

Now, Hiroshi Funakubo and co-workers at the Tokyo Institute of Technology, in collaboration with researchers across Japan, have conducted experiments to...

All Focus news of the innovation-report >>>



Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

Agricultural Trade Developments and Potentials in Central Asia and the South Caucasus

14.10.2016 | Event News

World Health Summit – Day Three: A Call to Action

12.10.2016 | Event News

Latest News

Resolving the mystery of preeclampsia

21.10.2016 | Health and Medicine

Stanford researchers create new special-purpose computer that may someday save us billions

21.10.2016 | Information Technology

From ancient fossils to future cars

21.10.2016 | Materials Sciences

More VideoLinks >>>