On The Radio- Brazil and the negative affects of hydropower


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Brazil’s flag (flickr/Rodnei Reis)

Kasey Dresser| February 18, 2019

This weeks segment looks at the negative impact of the Bela Monte Hyrdodam in Brazil. 

Transcript:

Hydropower is one of the world’s leading sources of renewable energy, but in some places it has come at a cost.

This is the Iowa Environmental Focus.

Hydropower accounts for over fourteen percent of all energy globally and about seventy percent of all renewable energy. Although dams help bring power to people, they can also have negative social and environmental consequences.

Researcher Emilio Moran is helping investigate the negative impact of the Bela Monte Hyrdodam in a developing area populated with indigenous communities. The dam is the third-largest in the world, and was built over Brazil’s Xingu (SHIN-GOO) River near the city of Altamira.

The new dams reduced the amount of fish that flow downstream, impacting the fishing yields of villages that rely on the river for their livelihoods. The project took three years to complete, and twenty thousand people were displaced from their homes during that time. Altamira’s population increased by sixty thousand during construction, and the city built hotels and attractions in response. After the dam was completed, however, those sixty thousand workers left, leaving many buildings vacant in their wake.

Hydropower is an important source of power, protecting Brazil from blackouts. It is also much cleaner than coal. But dams are not guaranteed generators of power, and their effectiveness can be altered by rainfall.

Emilio Moran and other researchers are only looking for some accountability, and are pushing for dam developers to mitigate the negative economic and social consequences before building.

For more information, visit Iowa Environmental Focus dot org.

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

Iowa solar employment is on the rise


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Most solar jobs are in installation and project development (flickr).

Julia Poska | February 14, 2019

Despite a 3.2 percent drop in solar energy jobs nationwide, solar jobs in Iowa grew 4 percent in 2018, according to the recently released National Solar Jobs Census.

Various solar projects recent years likely contributed to job growth in Iowa. In 2017, Alliant Energy built Iowa’s biggest solar farm on 21 acres near Dubuque, but the Central Iowa Power Cooperative recently announced plans to surpass that record with an 800 acre solar farm in Louisa County in 2020. Solarize Johnson and Linn Counties brought a combined 1,760 kilowatts of residential solar power to eastern Iowa in 2017 and 2018. Ideal Energy in Fairfield is currently building a solar array with special battery storage at Maharishi University of Management as well.

But still, only 844 Iowans are employed in solar. The state ranks 45 in solar jobs per capita despite 2018 growth, according to the census, which is conducted annually by the Solar Foundation.

Overall, U.S. solar employment has risen 159 percent since 2010 and is projected to continue growing. The price of solar installation has fallen dramatically, too. At the utility scale, the cost of a one Watt segment of a solar panel dropped from $4.40 in 2010 to $1.03 in 2018. For residential panels, the cost dropped from $6.65 to $2.89 per Watt.

 

 

 

A database of every tree in Iowa City


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Tree found in Willow Creek Park (Stephen Mally/The Gazette)

Kasey Dresser| January 28, 2019

This month Iowa City published a data base of the 49,863 trees it maintains. On the interactive website, the trees are assessed on location, size, species and environmental benefit. Residents can engage with the website and search specific neighborhoods to find trees in your area.

Iowa City Parks and Recreation Department, Director Juli Seydell Johnson said, “The main benefit for residents is they can see the information that we have. For us, it’s about planning. We want to have diverse tree canopy in the city.”

A data base of the trees also tracks the environmental impact. Right now, Iowa City trees save $455,600 in energy and $221,000 in air quality. The trees also avoid more than 10 million pounds of carbon pollution and 55 million gallons of stormwater runoff.

If you’re interested to learn about the trees in your neighborhood, the data base can be found here.

On The Radio- Adapting to the inevitability of climate change


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Oil Capital in Edmonton, Alberta, Canada (flickr/Wolfgang Schlegl)

Kasey Dresser| December 17, 2018

This weeks segment looks at methods to adapt to climate change laid out in the Fourth National Climate Assessment. 

Transcript:

Adaptation is crucial for dealing with climate change, but it is not always done well. 

This is the Iowa Environmental Focus. 

Even if greenhouse gas emissions stopped immediately, the Earth would still face decades of warming from gases already in the air. The Fourth National Climate Assessment discusses effective strategies for adapting to inevitable climate change. Here are three key things for communities to consider. 

ONE- Proactive planning works better than reacting to issues as they arise. Projections for an area’s future, which may differ greatly from present conditions, can help inform approaches.  

TWO- Dramatic issues like sea level rise and heat waves are certainly scary, but vulnerable communities cannot focus all their resources on adapting to one hazard.  It is important to consider a breadth of potential impacts and implement a range of strategies. 

THREE- Risk communication can keep residents informed, influence the decisions they make today,  and help them prepare for the future. It is important to communicate about what is anticipated every step of the way. 

For more information about climate change adaptation, visit iowa-environmental-focus-dot-org.

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

On The Radio- Benefits of passive building design


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Green roof (picture taken off the Sears Tower in Chicago, IL)

Kasey Dresser| December 3, 2018

This weeks segment looks at how implementing passive design can improve energy efficiency. 

Passive design can improve energy efficiency on a warming planet.

As climate change heats up Iowa, how will people stay cool without increasing energy demand? The answer may lie in something called passive design. 

This is the Iowa Environmental Focus. 

Scientists project Iowa heatwaves to become, on average, 7 degrees hotter by mid-century, according the 4th U.S. National Climate Assessment.  About once per decade, a heatwave 13 degrees hotter may occur. 

In such events, people rely heavily on cooling systems. In many cases, this means cranking up the air conditioning, and therefore increasing utility bills and our dependence on fossil fuels.

Passive design techniques include how the building is oriented, window placement, roofing material, tree shading and more. All help maintain comfortable temperatures year round by letting sunlight in and shading it out at the appropriate times.  Tightly sealed insulation minimizes the exchange of air with the outdoors.

Passively designed buildings reduce energy demand and are more comfortable environments to live and work in.

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

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

On The Radio- India hoping to open the first fully solar-powered airport


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The arrival gates at Cochin International Airport (Business Television India)

Kasey Dresser | October 29, 2018

This weeks segment looks at prospective plans for India to open the first fully solar-powered airport.

Transcript:

India is set to open the world’s first fully solar-powered airport.

This is the Iowa Environmental Focus.

Cocin International Airport is the largest and busiest airport in India’s Kerala state. The transition from traditional electricity to solar power started in 2012, when the price of electricity jumped significantly.

Currently, the airport uses solar panels to generate more than twenty-nine point five megawatts of energy, enough to power the airport with surplus electricity even during the cloudy and rainy monsoon season.

The airport in Cocin is just one example of the growing influence solar power has on India. As much as 10% of expenses in airports come from the amount of electricity used, and implementing more renewable sources of power would help decrease both the carbon footprint and these expenses.

Solar power has been a growing industry in India for some time. The country recently proposed dramatically increasing their solar energy output, proposing to implement enough new panels to generate 100 gigawatts of power. There are some doubts about the ability to meet this goal as India still struggles with its infrastructure.

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

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

Extreme rain causes record-setting delay for Iowa soybean harvest


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This map from Iowa Environmental Mesonet shows the extent of rainfall in Iowa this fall. These conditions have contributed to a delayed soybean harvest. 

Julia Poska | October 19, 2018

Last week, Iowa saw up to four inches of rain rain, below-average temperatures, and 10 confirmed tornadoes. The unfavorable weather has made this year’s the slowest Iowa soybean harvest on record.

As of Oct. 14, Iowa farmers had only harvested 14 percent of soybean acres in the state. , according to last week’s Iowa Crop Progress & Condition Report, put out by the National Agriculture Statistics Service. The report said that between the cold, rain and even snow, only 0.8 days during the week were suitable for fieldwork.

At this time last year, about 30 percent of Iowa soybeans were off the field. In 2016, that number was closer to 50 percent.  The 2018 Iowa Climate Statement, released last week, warns that extreme rainfall events will only get worse in Iowa as time goes on. Future years may see even later delays for harvests.

Despite the slow harvest, the bean plants themselves are a bit ahead of schedule. The report said 97 percent of the soybean crop was dropping leaves as of the 14th, five days ahead of average. Wallace’s Farmer reported that in some fields, moisture has prompted beans to start sprouting out of their pods.

Ideally, the beans only contain 13 percent moisture at harvest, but these wet conditions could cause the beans to absorb and store more water from the air, according to South Dakota’s Capital Journal. This could spell bad news for farmers, as many buyers only take dry soybeans. Farmers will have to wait longer to harvest or store their beans long-term.

Dryer conditions this week should have provided some opportunity for farmers to catch up. Meanwhile, states in the eastern Corn Belt are reporting faster-than-average harvest, according to Wallace’s Farmer.