On The Radio- Climate change affecting the moss in Antartica


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Red lichens, moss, hair grass, and pearlwort make up the fauna of Antarctic (Karen Chase/ flickr)

Kasey Dresser | October 15, 2018

This weeks segment highlights the affect of climate change on plant life in East Antartica.

Transcript:

There is evidence of climate change affecting moss beds in East Antarctica.

This is the Iowa Environmental Focus.

In East Antarctica, green moss beds emerge after the snow melts for 6 weeks. West Antarctica and the Antarctic Peninsula have experienced significant climate changes, but East Antarctica was yet to experience anything major.

Professor Sharon Robinson from the University of Wollongon in Australia was surprised to see abrupt changes in the moss. In 2003 the monitoring system was first set up and the moss beds were lush and bright green. When her team returned in 2008 the majority of the plants were red. The dark red color indicates the plant is stressed.

The red pigment is meant to act as sunscreen. On the team’s most recent trip to East Antarctica, there were also patches of grey moss indicating the plant is starting to die. This behavior is caused by a drying climate in the region. It is now too cold and windy for the moss beds to live primarily under water. The drier climate is a result of climate change and ozone depletion.

For more information, visit iowa-environmental-focus-dog-org.

From the UI Center for Global and Regional Environmental Research, I’m Sara E. Mason.

Reflecting on the 2018 Climate Statement


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This visual from Iowa Environmental Mesonet shows extreme rainfall in Des Moines this past summer.

Julia Poska | October 12, 2018

The UI Center for Global and Regional Environmental Research had a big day yesterday; we released the 2018 Iowa Climate Statement at the Cedar Rapids Public Library for the press and public. Today we can reflect on the magnitude of the statement’s message.

Titled “Designing Buildings and Communities for Iowa’s Future Climate,” the statement warns of the urgent need to adapt buildings and public infrastructure to withstand the extreme weather of tomorrow. Scientists predict that average annual heat waves will increase by 7ºF and the most extreme rainfall events will double in intensity by midcentury.

“These are really scary numbers which will have negative consequences for the elderly, the economy, for corn and soybeans, as well as beef, hogs and poultry even under sheltered confinement,” said Jerry Schnoor, co-director of CGRER. “We must start now to adapt our built environment, including buildings and flood mitigation systems, to this changing climate.”

Schnoor presented the statement yesterday with Associate Professor of Architecture Ulrike Passe, director of Iowa State University’s Center for Building Energy Research.

“Water will also enter buildings from the foundation or basement walls,” Passe said. “In particular, heavier rain events and higher water tables affect foundations, and standards going forward must reflect that.”

She provided examples of several adaptations that can be made to buildings to prepare them for increased heat and precipitation, including steeper roof slopes, increased insulation and better ventilation. She said Iowan communities should consider managing increased rainwater runoff with green, vegetation-based infrastructure like rain gardens and urban forestry as well.

These adjustments need to be made as soon as possible; Iowa’s weather is already feeling the effects of climate change.

“Warming over the Gulf of Mexico is helping feed large rain events in Iowa and the Midwest,” Schnoor said. “That’s why we’re prone to intense downpours and major flooding like Des Moines saw on June 30 and like eastern Iowa has been experiencing for the past six weeks. People’s homes and businesses are being flooded that have never been flooded before.”

Burning less fossil fuel and reducing atmospheric carbon emissions can help mitigate climate change’s impacts as well, but at this stage, adaptation is absolutely crucial. We at CGRER hope those with decision-making power take the statement to heart, and listen to the record 201 science faculty and researchers from 37 Iowa colleges and universities who endorsed it.

 

The Iowa Climate Statement 2018


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Ulrike Passe (left) and Jerry Schnoor answer questions about the Iowa Climate Statement.

Natalia Welzenbach-Marcu and Kasey Dresser | October 11, 2018

The Iowa Climate Statement 2018: Designing Buildings and Communities for Iowa’s Future Climate was released earlier today at the Cedar Rapids Public Library. The statement was announced by Jerry Schnoor, the co-director of the University of Iowa’s Center for Global and Regional Environmental Research, and Ulrike Passe, Associate Professor of Architecture at Iowa State University.

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Ulrike Passe (left) and Jerry Schnoor read the climate statement and answered questions

The eighth annual statement, “Iowa Climate Statement 2018: Designing Buildings and Communities for Iowa’s Future Climate,” released Thursday, October 11 was signed by a record 201 science faculty and researchers from 37 Iowa colleges and universities. The statement describes the urgent need to fortify our building and public infrastructure from heat and precipitation and looks to the future weather of Iowa, suggesting ways to improve Iowa’s buildings to suit those changing weather patterns.

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The climate statement holds a record number of signers
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Extreme precipitation is just one factor influencing this year’s climate statement topic

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Watch the press conference on our Facebook page

Read the climate statement

An analysis of early farming practices


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Farming (cjuneau/flickr)

Kasey Dresser | September 26, 2018

A study from the University of Wisconsin- Madison theorizes how agriculture would have affected the climate without the Industrial Revolution.

According to the Early Anthropogenic Hypothesis, early farming practices produced mass amounts of carbon dioxide and methane. Without the presence of the industrial revolution ancient agriculture would have trapped enough methane in the atmosphere to create a similar state of climate change.

The Early Anthropogenic Hypothesis was originally developed by William Ruddiman, a paleoclimatologist at the University of Virginia 15 years earlier. The climate reconstructions are based on ice core data. Our current geological time frame is called Holocene and the one before is referred to as MIS19. Both time periods started with similar carbon dioxide and methane concentrations based on evidence from ice core data. MIS19 saw a steady drop in greenhouse gasses. The numbers have since spiked to our current state of emissions. The data currently stops at the start of the Industrial Revolution but people are continuing to develop the hypothesis.

Stephen Vavrus, a senior scientist on the project concludes, “science takes you where it takes you,” and “things are so far out of whack now, the last 2,000 years have been outside the natural bounds. We are so far beyond what is natural.”

Who is responsible for protecting Iowa’s water?


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In the wake of the Des Moines Water Works lawsuit, Iowans are faced with the question, who is responsible for protecting our water? (Tony Webster/Wikipedia)

Katelyn Weisbrod | June 22, 2018

This week’s episode of “Our Water, Our Land,” looks to the Des Moines Water Works a little over a year after a federal judge dismissed a lawsuit involving the utility.

In 2015, Des Moines Water Works sued Sac, Calhoun, and Buena Vista counties, claiming the northern Iowa counties were responsible for high nitrate levels in the Raccoon River — a source of water for 500,000 Iowans. The utility spent $1.5 million in 2015 removing nitrates from the water so it was safe for consumption.

The Des Moines Water Works was criticized for its decision to take the issue to court by politicians and rural Iowans, for both the legal costs and the blame on farmers.

Professor Neil Hamilton of the Agricultural Law Center at Drake University said the lawsuit has brought attention to the issue of water quality in the state of Iowa, and has raised the question of, who is responsible for keeping water safe and clean?

To learn more, watch the full episode below.

A visit with Dr. James Hansen discussing his relationship with Dr. Van Allen


 

Kasey Dresser | May 4, 2018

The University of Iowa was very lucky to receive a visit from scientist, researcher, and adjunct professor Dr. James Hansen. He was gracious enough to sit down with us and interview. Today’s video talks about his relationship with Dr. Van Allen. 

A visit with Dr. James Hansen and his advice to students


Kasey Dresser | May 3, 2018

The University of Iowa was very lucky to receive a visit from scientist, researcher, and adjunct professor Dr. James Hansen. He was gracious enough to sit down with us and interview about his work, education, and relationship with Dr. James Van Allen. Today’s video talks about his education and advice to students.