DNR reports 3% increase in Iowa greenhouse gas emissions


2017 pie chart.png
This pie chart shows 2017 greenhouse emissions in Iowa by sector (from the 2017 Greenhouse Gas Inventory Report). 

Julia Poska | December 28th, 2018

Greenhouse gas emissions in Iowa rose 3 percent from 2016 to 2017, according to a new report from the state Department of Natural Resources.  The report accounted for 131 million metric tons of emissions released throughout the state in various sectors including energy, agriculture and solid waste.

The largest sources of increase were waste and industrial processes. Emissions from waste rose 28.62 percent due to increased decomposition of older waste in landfills. Emissions from industrial processes rose 31.73 percent percent, largely due to increased production of ammonia, up over 180 percent from 2016. The only sector to see decrease was natural gas production and distribution, which decreased about 10 percent and accounts for only 1 percent of total emissions.

Agriculture contributes about 30 percent of the state’s greenhouse gas emissions,  mainly methane and nitrous oxide, which are respectively about 25 and 298 times more potent greenhouse gases than carbon dioxide. These emissions largely come from animal waste and soil management.

Despite this increase, total emissions are down 6 percent from 2008.  The DNR projects that emissions will continue rising through at least 2020, and drop a bit more by 2030.

Carbon dioxide capture using magnesite


SONY DSC
Magnesite is used in a variety of way, even in jewelry. (source)

Eden DeWald | August 15th, 2018

Each ton of crystalline magnesite can remove up to half a ton of  atmospheric carbon dioxide. However, the rate of formation for naturally occurring magnesite is fairly slow and needs to occur under high temperatures and pressures. Researchers at Trent University in Ontario, Canada have found a way to both speed up the process of producing magnesite and produce it at room temperature.

Polystrene microspheres were used as a catalyst to start the crystallization at room temperature. The microspheres were preserved in the process, making them potentially reusable for more magnesite production. The formation occurring at room temperature is another aspect which makes this production process more sustainable. Not having to heat and pressurize the magnesite for a long period of time makes the whole production process more energy efficient.

Magnesite can take up to thousands of years to develop naturally—this new process only takes 72 days. Research concerned with using magnesite for carbon sequestration is still in development, but the discovery of an easier production process makes it more viable.

2017 is the third warmest year on record


4392965590_cb953086dd_z.jpg
The past three years have been the hottest on record. (NASA/flickr)

Eden DeWald | August 8th, 2017

According the the State of the Climate report, 2017 is the third warmest year on record. The annual State of the Climate report is published by the American Meteorological Society and is based on international data taken from land, air, and sea monitoring stations. 2016 still remains the warmest year on record, and 2015 comes in as the second warmest.

The data from 2017 also reveals that last year, atmospheric greenhouse gas levels were the highest ever recorded.  The average global carbon dioxide concentrations reached 405 parts per million. This far surpasses any carbon dioxide concentrations from previous climate data, as well as C02 concentrations found in ice cores from well over half a million years ago.

The report also contains information about continued sea level rise, ocean surface temperatures, coral bleaching, and declining polar ice cap coverage. To read the State of the Climate in 2017, or any of the past reports, click here.

Carbon dioxide concentration reaches record-high


9856473134_3ff30936a3_o
Human activity and El Niño drove carbon dioxide levels up significantly last year. (Zappys Technology Solutions/flickr)
Jenna Ladd |November 1, 2017

Carbon dioxide (CO2) levels rose to a record-high during 2016 according to the World Meteorological Organization.

The average accumulated CO2 level in Earth’s atmosphere reached 403.3 parts per million last year, thanks to human activity and an El Niño weather event which brought drought to much of the world’s CO2-capturing vegetation. Last year’s increase of CO2 levels was 50 percent higher than average year-to-year increases over the last ten years.

Carbon dioxide and other greenhouse gas measurements were taken by the World Meteorological Organization (WMO) at 51 sites around the globe. Dr. Oksana Tarasova, head of WMO’s global atmosphere watch program, told the BBC, “It is the largest increase we have ever seen in the 30 years we have had this network.”

Tarasova also pointed out that while humans have slowed their greenhouse gas emissions, the cumulative excess CO2 already in the atmosphere will remain problematic for centuries to come.

Scientists say that Earth has not had the same concentrations of CO2 in the atmosphere since about three to five million years ago, when temperatures were two to three degrees Celsius warmer and sea levels were several dozen feet higher.

WMO Secretary-General Petteri Taalas said that urgent and drastic cuts to greenhouse gas emissions should be made to avoid “dangerous temperature increases” by 2100.

Taalas added, “With levels of carbon dioxide in the atmosphere consistently breaking new records, the influence of human activities on the climate system has become more and more evident.”

Potential for nanomaterials to solve environmental problems


imageCarousel.imageformat.lightbox
Nanotechnologies are being developed to harvest carbon dioxide and remove heavy metals, pictured above, from water sources. (ETH Zurich)
Jenna Ladd| September 15, 2017

In exciting new research, scientists from around the world are working to develop nanomaterials that can efficiently harvest carbon dioxide from the air and convert it into another useful product.

Nanomaterials are defined as those materials that are smaller than one millionth of a millimeter, or about 100,000 times smaller in width than a human hair.  Arun Chattopadhyay is a chemist at theIndian Institute of Technology Guwahati’s Center for Nanotechnology. “Nanomaterials can convert carbon dioxide into useful products like alcohol. The materials could be simple chemical catalysts or photochemical in nature that work in the presence of sunlight,” he said to Climate Central.

The trouble is, nanomaterials are not yet inexpensive enough for wide-scale application. To this point, Chattopadhyay added, “Nanomaterials could help us mitigate pollution. They are efficient catalysts and mostly recyclable. Now, they have to become economical for commercialization and better to replace present-day technologies completely.”

Researchers in France have developed a nanomaterial that uses sunlight and water to transform atmospheric CO2 into methanol. Although this type of nanomaterial may present a cheaper option, scientists are still struggling to create the particles at a consistent size.

Other types of nanomaterials are being developed to remove heavy metals and dyes from wastewater, clean up oil spills and breaking down organic waste more quickly.

U.S. energy flow chart reveals the good and the bad


lbnl_energy_spaghetti_2017
(Lawerence Livermore National Laboratory)
Jenna Ladd | April 18, 2017

Each year since 2010, the Lawrence Livermore National Laboratory has released an energy flow chart that illustrates sources of U.S. energy, what it’s used for and how much of it goes to waste.

The 2016 energy flow chart quantifies energy use in British Thermal Unit “quads,” which is shorthand for quadrillion or one thousand trillion. A British Thermal Unit (BTU) is equal to the amount of energy required to raise one pound of water by 1 degree Fahrenheit. Americans used 97.3 quads of energy in 2016, which is about 0.1 quadrillion BTU more than last year.

The gray box on the upper right-hand corner of the graphic depicts just how much of that energy was wasted this year: 66.4 quadrillion BTU or 69 percent of all energy produced. It is important to remember that per the second law of thermodynamics, when raw materials are converted into energy, some energy is always lost to heat. In other words, no reaction is 100 percent efficient.

Since the 1970’s, wasted energy has surged in the United States due to a rapid increase in personal electricity consumption and private vehicular transportation, which are both extremely inefficient. Roughly 75 of the energy generated for private transportation and two-thirds of energy required for electricity goes to waste.

This year’s energy flow chart was not all bad news. Coal use fell by nine percent nationwide. That supply was replaced by rapid growth in wind, solar and natural gas energy production. Wind and solar energy did particularly well, with wind energy up 19 percent and solar energy up 38 percent.

Fossil fuel consumption for transportation rose by 2 percent this year, but residential, commercial and industrial energy use all decreased slightly. In all, the U.S. is slowly moving away from fuels that emit greenhouse gases. Total carbon dioxide emissions fell by 4.9 percent in 2016. It is uncertain, however, whether this trend will continue under the Trump administration.

Warming ponds could speed up climate change


warmingponds
Small ponds used by researchers at the University of Exeter and Queen Mary University. (University of Exeter)
Jenna Ladd | February 23, 2017

A recent study shows that when freshwater ponds warm, they release more methane and are able to store less carbon dioxide.

Researchers at the University of Exeter and Queen Mary University of London warmed a collection of man-made ponds by four to five degrees Celsius over the course of seven years. The first of its kind, the study found that the amount of methane released by the ponds increased by double while the amount of carbon dioxide the ponds could store decreased by half.

Professor Gabriel Yvon-Durocher was the study’s lead investigator. He said, “Given the substantial contribution small ponds make to the emission of greenhouse gases, it is vital to understand how they might respond to global warming.”

While ponds and lakes only account for about 0.008 percent of the total volume of water on Earth, they are major contributors of carbon dioxide and methane. Greenhouse gases from freshwater sources are mostly the byproduct of organic matter breaking down in low-oxygen environments.

Yvon-Durocher continued, “Our findings show that warming can fundamentally alter the carbon balance of small ponds over a number of years, reducing their capacity to absorb and increasing emissions of methane. This could ultimately accelerate climate change.”

The scientist noted that these findings are different than those normally observed on land, where the effect of rising temperatures lessen over time. In contrast, when ponds warm and release methane, a gas that is known to be 25 times more potent than carbon dioxide, they actually exacerbate warming.

Ponds of less than one meter, such as those used in the study, are responsible for the release of 40 percent of all inland methane emissions.

 

The professor noted, “This accelerating effect in ponds, which could have serious impacts on climate change, is not currently accounted for in Intergovernmental Panel on Climate Change models.”

The complete study can be found in the journal Nature Climate Change.