2019 was Iowa’s 12th wettest year on record, with an average of 41.49 inches of rainfall across the state, according to the state Department of Natural Resources. Rainfall in May, September and October was especially high, while the summer months experienced below average rainfall.
The two-year 2018/2019 period was the wettest on record, with 19 more inches of precipitation than average. Stream flows were above normal all 2019 following heavy snow in the winter months. The rainy spring and fall seasons are indicative of projected climate change models for the region.
2019 temperatures in Iowa were cooler than average, however, by 1.2 degrees Fahrenheit. During the January “Polar Vortex,”one station in Emmet County recorded a -59 degree windchill. Summer was slightly cooler than average, though July and September were warm, andChristmas week broke record temperature highs.
As Thanksgiving is a holiday both reflectance AND eating a ton, Americans who are grateful for both the food on their plate and the planet that provided it might be interested in the BBC’s “Climate Change Food Calculator,” published in August.
The food calculator provides estimates of annual greenhouse gas emissions, water use and land use for one person’s consumption different food items based on how frequently the user says they eat those foods. Results are based on global averages.
The food calculator does not have information on turkey specifically, but below are results for daily consumption of other foods often shared on Thanksgiving:
Potatoes: 16kg greenhouse gases
Wine: 114kg greenhouse gases, 5,026 liters of water
Bread: 21kg greenhouse gases, 8,995 liters of water
Chicken: 497kg greenhouse gases, 33,294 litres of water, 616m² land
Beans: 36kg greenhouse gases, 8,888 liters of water
Pork: 656kg greenhouse gases, 95,756 liters of water, 926m² land
So enjoy your feast tomorrow, if you are having one, but remember to thank the Earth for the resources it took to get your meal on your plate, too.
Users looking to build new wells can use the map to determine the new well site and the quality of the water in that area. By looking at the water quality data of existing wells adjacent to the potential new build, a safe location for a new source of water can be determined.
Thousands of Iowans relay on wells for their water. CHEEC director David Cwiertny estimates that roughly 60% of Iowans rely on groundwater, with about 300,000 Iowans relying on private wells specifically. While recent news about nitrate levels from agricultural fertilizers has been concentrated on Iowa’s rivers, Iowa’s wells suffer from contamination issues too, and the comprehensive data that IWFoS provides is vital for those looking to expand a town’s water resources.
Well forecasts–the details of well water quality and the locations of safe private wells–have been available through the Iowa Geological Survey for years, but these forecasts were generally only available during business hours. IWFoS is accessible 24/7 and uses IGS’s geological info for the well locations, combining this with datasets on well water quality from the Private Well Tracking System that the Iowa Department of Natural Resources manages.
Transparency with our water quality data is one of the best ways to ensure that safe natural resources are available for all Iowans, all the time.
The Iowa Department of Natural Resources has advised beach goers against swimming at nine Iowa beaches across the state due to high levels of E.coli in the water. Signs have been posted to warn Iowans about the high levels of E.coli, but there is still no shortage of swimmers on the affected beaches.
E.coli, or Escherichia coli, is a bacterium that lives in the digestive tracts of humans. However, pathogenic strains of E.coli can cause infections in humans with symptoms including diarrhea and vomiting, and in some serious cases, kidney failure. Exposure to pathogenic bacteria can occur via contaminated food, water or contact with another infected person. Young children, the elderly, and those with weakened immune systems are the most susceptible to an E.coli infection.
The DNR recognized that it is hard to pinpoint what causes these high levels of E.coli in water. However, E.coli outbreaks in lakes and beaches have been linked to human and animal waste. A paper from the Iowa Public Policy project published earlier this year also links E.coli to waste from concentrated animal feeding operations, or CAFOs, of which there are an estimated 10,000 in Iowa.
Excess nitrogen in a water system spurs algae growth. After these algae blooms eventually decompose, bacteria or other small organisms feed on the dead algae and deplete oxygen within the water. This process is known as aquatic hypoxia, or eutrophication, and is responsible for the dead zone in the Gulf of Mexico. Iowa is not the only state that has problems with runoff, but with 72 percent of Iowa’s land being used for farming, Iowa is a major contributor to the eutrophication process.
The rise in nitrate pollution has occurred despite Iowa’s Nutrient Reduction Strategy, which just marked its five year anniversary earlier this year. The Nutrient Reduction Strategy is a voluntary program which involves 8,000 farmers and focuses on conservation methods such as cover crops and no-till techniques. Mike Naig, Iowa’s Secretary of Agriculture, wrote in a Des Moines Registerarticle that he sees outreach and education about the effect that nitrates have on the water system as an essential aspect of improving Iowa’s water quality.
A recent study by NASA, the first of its kind, found that significant amounts of water are shifting around Earth’s surface.
Scientists used data from the Gravity Recovery and Climate Experiment (GRACE), two satellites, to track gravitational changes made by hydrologic shifts in 34 regions around the world. From 2002 through 2016, they paired this information with satellite precipitation data, NASA/U.S. Geological Survey Landsat imagery, irrigation maps, and public reports of human activities related to agriculture, mining and reservoir operations.
In short, researchers found that wetter areas are getting wetter and drier areas are getting drier. Jay Famiglietti of NASA’s Jet Propulsion Laboratory is one of the study’s authors. He explains, “We see a distinctive pattern of the wet land areas of the world getting wetter – those are the high latitudes and the tropics – and the dry areas in between getting dryer. Embedded within the dry areas we see multiple hotspots resulting from groundwater depletion.”
Scientists point to a couple of things to explain freshwater depletion in areas that are getting drier. In Saudi Arabia and many other parts of the world, for example, ground water has been depleted for agricultural purposes. The study also found that groundwater availability changes with periods of drought. From 2007 through 2015, southwestern California lost enough freshwater to fill 400,000 Olympic size swimming pools because the region saw less precipitation and snowpack during that time and had to rely on groundwater more heavily.
Freshwater loss in many regions was attributed to global warming that caused glaciers and ice sheets to melt away. However, Famiglietti said that much more research is needed to determine whether climate change caused the other hydrologic shifts.
GRACE Follow-On, GRACE’s successor, will continue to monitor the movement on water on Earth and is set to launch on May 22nd from Vandenberg Air Force Base California.