Dust Impacts of Rapid Agricultural Expansion on the Great Plains

Lambert, A.; Hallar, A. Gannet; Garcia, Maria; Strong, Courtenay; Andrews, Elisabeth; Hand, Jenny L.

doi:10.1029/2020gl090347

Cited by 28 publications

(18 citation statements)

References 64 publications

(82 reference statements)

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“…9 Han and Martin report particles with a 500 nm metal oxide with 700 nm coating of dry AS. Assuming that the metal oxides and the AS are spherical, the immersed surface area per total volume is equal to 0.785 μm 2 in 3.59 μm 3 , or 0.219 μm 2 /μm 3 . In contrast, each droplet in our study contains approximately three immersed particles with mode diameters as high as 310 nm, as can be seen in Figure S1, with AS droplets with diameters of approximately 15 μm.…”

Section: Heterogeneous Efflorescence Of Levitated Ammonium Sulfate Dr...mentioning

confidence: 99%

“…It is estimated that approximately one-quarter of mineral dust emissions originate from anthropogenic and agricultural activity, while three-quarters originate from natural sources . However, due to a combination of agricultural expansion and increased likelihood of drought due to climate change, sources of atmospheric dust loading have been shown by aerosol optical depth observations to have increased by approximately 5% per year since 2000 . As such, it is vital to follow and identify the impacts of mineral dust on atmospheric processes.…”

Section: Introductionmentioning

confidence: 99%

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Metal Oxide Particles as Atmospheric Nuclei: Exploring the Role of Metal Speciation in Heterogeneous Efflorescence and Ice Nucleation

Schiffman

Fernanders

Davis

et al. 2023

ACS Earth Space Chem.

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Mineral dust can indirectly impact climate by nucleation of atmospheric solids, for example, by heterogeneously nucleating ice in mixed-phase clouds or by impacting the phase of aerosols and clouds through contact nucleation. The effectiveness toward nucleation of individual components of mineral dust requires further study. Here, the nucleation behavior of metal oxide nanoparticle components of atmospheric mineral dust is investigated. A long-working-distance optical trap is used to study contact and immersion nucleation of ammonium sulfate by transitionmetal oxides, and an environmental chamber is used to probe depositional ice nucleation on metal oxide particles. Previous theory dictates that ice nucleation and heterogeneous nucleation of atmospheric salts can be impacted by several factors including morphology, lattice match, and surface area. Here, we observe a correlation between the cationic oxidation states of the metal oxide heterogeneous nuclei and their effectiveness in causing nucleation in both contact efflorescence mode and depositional freezing mode. In contrast to the activity of contact efflorescence, the same metal oxide particles did not cause a significant increase in efflorescence relative humidity when immersed in the droplet. These experiments suggest that metal speciation, possibly as a result of cationic charge sites, may play a role in the effectiveness of nucleation that is initiated at particle surfaces.

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Section: Heterogeneous Efflorescence Of Levitated Ammonium Sulfate Dr...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Metal Oxide Particles as Atmospheric Nuclei: Exploring the Role of Metal Speciation in Heterogeneous Efflorescence and Ice Nucleation

Schiffman

Fernanders

Davis

et al. 2023

ACS Earth Space Chem.

View full text Add to dashboard Cite

show abstract

“…For example, satellite-derived SO 2 can be an important indicator of power plant emissions (Lu et al, 2013), satellite observations of CO show the impact of global pollution transport (NASA, 2015), and satellite observations of "aerosol optical depth" have been used quantify global exposure to fine PM (van Donkelaar et al, 2010). Beyond tracking fuel combustion, satellite data have been used to assess upstream emissions from energy processes, such as dust impacts of cropland expansion from bioenergy (Lambert et al, 2020) and air emissions associated with the pre-harvest sugarcane field burning phase of ethanol production in Brazil (Tsao et al, 2012).…”

Section: Health and Air Quality Impactsmentioning

confidence: 99%

Satellite Data Applications for Sustainable Energy Transitions

Edwards¹,

Holloway²,

Pierce³

et al. 2022

Front. Sustain.

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Transitioning to a sustainable energy system poses a massive challenge to communities, nations, and the global economy in the next decade and beyond. A growing portfolio of satellite data products is available to support this transition. Satellite data complement other information sources to provide a more complete picture of the global energy system, often with continuous spatial coverage over targeted areas or even the entire Earth. We find that satellite data are already being applied to a wide range of energy issues with varying information needs, from planning and operation of renewable energy projects, to tracking changing patterns in energy access and use, to monitoring environmental impacts and verifying the effectiveness of emissions reduction efforts. While satellite data could play a larger role throughout the policy and planning lifecycle, there are technical, social, and structural barriers to their increased use. We conclude with a discussion of opportunities for satellite data applications to energy and recommendations for research to maximize the value of satellite data for sustainable energy transitions.

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“…Such soils are especially vulnerable to deflation (erosion by wind of loose sediment) when subjected to extended drought-caused losses in vegetation and/ or certain types of ground disturbance and/or heavy tilling. Lambert et al (2020) reported that given the expansion of agriculture in many parts of the U.S. Great Plains, increases in drought and associated crop losses are already causing increases in erosion and dust emission. Farmers in Curry County and other parts of eastern New Mexico, observing drought-stricken fields, are concerned that future increased windiness could result in significant erosion and dust emission, essentially establishing a "new Dust Bowl'' (Albuquerque Journal, Jan. 2, 2021).…”

Section: Impacts On Eolian Landscapes and Eolianmentioning

confidence: 99%

Climate Change in New Mexico Over the Next 50 Years: Impacts on Water Resources

Dunbar¹,

Gutzler²,

Pearthree³

et al. 2022

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All water that we use in New Mexico originates as rain or snow falling onto the landscape, which either goes to groundwater or surface water or returns to the atmosphere. Of the precipitation that falls on the state, 1.6% runs off into streams and rivers, and 1.8% infiltrates into the ground, recharging subsurface aquifers. Much larger proportions are transpired by plants (78.9%) or evaporated (17.7%). The impact of climate change on all of these pathways will affect our state's water budget. Notably, because of the larger percentages of water lost to evaporation or transpiration, even very small changes in these factors will result in large changes to runoff and recharge. As mentioned in Chapter 2, the climate will continue to warm over the next 50 years, likely without an increase in precipitation, leading to greater statewide aridity. Hydrological modeling indicates declines in both runoff and recharge going forward, amounting to 3% to 5% per decade for both quantities. Historical trends in runoff indicate significant year-to-year variability, as do trends in soil moisture and recharge. But all are generally decreasing, consistent with the results of climate models that project a drying climate. Combining the historical trends with modeling of future changes, significant decreases in runoff and recharge seem very likely. TERRESTRIAL ECOSYSTEMSClimate is a fundamental driver of ongoing and future vegetation changes in New Mexico. Future changes in vegetation will affect the distribution and abundance of water resources in New Mexico. Major shifts in climate and vegetation across New Mexico's landscapes have occurred in the past, but the scale and rate of recent and projected climate change is probably unprecedented during the past 11,000 years. Recent warming, along with frequent and persistent droughts, have amplified the severity of vegetation disturbance processes like fire, physiological drought stress, and insect outbreaks, driving substantial changes in New Mexico vegetation since the year 2000. Ongoing and projected vegetation changes include growth declines, reduced canopy and ground cover, massive tree mortality episodes, and species changes in dominant vegetation-foreshadowing more severe changes to come if current warming trends continue as projected. Such major alterations of New Mexico vegetation likely will also have substantial ecohydrological feedbacks with New Mexico water resources. Since water-related environmental stresses occur in parallel with water supply shortages for people, such climate-change-driven water stress could lead to increasing conflict between managing declining water available for human use (e.g., irrigation) and retaining "wild" water for the maintenance of historical ecosystems.

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Dust Impacts of Rapid Agricultural Expansion on the Great Plains

Cited by 28 publications

References 64 publications

Metal Oxide Particles as Atmospheric Nuclei: Exploring the Role of Metal Speciation in Heterogeneous Efflorescence and Ice Nucleation

Metal Oxide Particles as Atmospheric Nuclei: Exploring the Role of Metal Speciation in Heterogeneous Efflorescence and Ice Nucleation

Satellite Data Applications for Sustainable Energy Transitions

Climate Change in New Mexico Over the Next 50 Years: Impacts on Water Resources

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