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20 results for “Urban atmosphere”
Atmospheric Wet Deposition in Urban and Suburban Sites Across the United States
These data are for the publication: Conrad-Rooney, E., J. Gewirtzman, Y. Pappas, V.J. Pasquarella, L.R. Hutyra, and P.H. Templer. 2023. Atmospheric Wet Deposition in Urban and Suburban Sites Across the United States. Atmospheric Environment, https://doi.org/10.1016/j.atmosenv.2023.119783 This study investigated long-term trends in atmospheric wet deposition of nitrogen (ammonium and nitrate), sulfate, cations, and chloride for urban and suburban sites in the U.S. using data from the National Atmospheric Deposition Program and assessed whether urban NADP sites are hotspots for atmospheric wet deposition. To examine potential impacts of urbanization on atmospheric wet deposition, percent impervious surface area and population density data were extracted from Google Earth Engine. The results of this study highlight that urban areas have greater rates of many forms of atmospheric deposition and that there should be more long-term monitoring of atmospheric deposition in cities and suburban sites throughout the U.S. Data sources: - Dewitz, J., and U.S. Geological Survey, 2021, National Land Cover Database (NLCD) 2019 Products (ver. 2.0, June 2021): U.S. Geological Survey data release, doi:10.5066/P9KZCM54 - National Atmospheric Deposition Program (NRSP-3). 2022. NADP Program Office, Wisconsin State Laboratory of Hygiene, 465 Henry Mall, Madison, WI 53706. https://nadp.slh.wisc.edu/networks/national-trends-network/ - United States Census Bureau, TIGER: US Census Blocks, 2010 United States Census. https://developers.google.com/earth-engine/datasets/catalog/TIGER_2010_Blocks#description
Data in Support of Effects of Urbanization and Forest Fragmentation on Atmospheric Nitrogen Inputs and Ambient Nitrogen Oxide and Ozone Concentrations in Mixed Temperate Forests.
Urban ecosystems around the globe experience greater atmospheric nitrogen (N) deposition compared to rural areas and are particularly vulnerable to fragmentation due to land-use change. However, while the influences of urbanization and forest fragmentation on atmospheric inputs to temperate forests have been determined separately, the combined effects of the two changes on temperate forest ecosystems have yet to be assessed. To investigate these combined effects, we deployed throughfall collectors to measure atmospheric N inputs and passive samplers to measure nitrogen oxides (NOx) and ozone (O3) throughout the 2018 and 2019 growing seasons in seven temperate forest sites along an urbanization gradient from Boston to central Massachusetts. We found a positive relationship between the amount of impervious surface area surrounding each site (% ISA) and throughfall nitrate (NO3-) inputs at the forest edge, with urban edge NO3- inputs nearly double the rate at rural edge sites. There were higher rates of NO3- inputs in the rural forest interior than edge sites. Urban sites experienced significantly higher concentrations of NOx and O3 both in the interior and at the edge compared to rural sites. Atmospheric N inputs were significantly elevated in the early (May-July) compared to the late (August-November) growing season and concentrations of NOx and O3 were also elevated in the mid-growing season (June-September). Our results demonstrate that together, urbanization and forest fragmentation lead to greater rates of atmospheric N inputs and ambient pollutant concentrations of NOx and O3 in temperate forests of the northeastern U.S.
"I was the class teacher at that time. It was a class trip, usually organized near the end of the schoolterm in summer. The pupils went there by bike to have a barbecue at the sandy banks of the river Rhine near Dusseldorf. The landscape around is mostly dominated by agriculture and glasshouse cultures. You find a mixture of former villages nowadays completely suburbanized. The population finds jobs in the nearby urban centers like Dusseldorf, Neuss and other big cities. The reason why Irecorded the scene is simply because Iam interested in collecting sounds in general by doing recordings in different surroundings like nature, cities and everything between. My memories about the event are that it was a relaxing and funny atmosphere, which is not always the case while teaching in a classroom" [Reinhard/reinsamba]15 in Collecting Sounds. Online Sharing of Field Recordings as Cultural Practice
"I was the class teacher at that time. It was a class trip, usually organized near the end of the schoolterm in summer. The pupils went there by bike to have a barbecue at the sandy banks of the river Rhine near Dusseldorf. The landscape around is mostly dominated by agriculture and glasshouse cultures. You find a mixture of former villages nowadays completely suburbanized. The population finds jobs in the nearby urban centers like Dusseldorf, Neuss and other big cities. The reason why Irecorded the scene is simply because Iam interested in collecting sounds in general by doing recordings in different surroundings like nature, cities and everything between. My memories about the event are that it was a relaxing and funny atmosphere, which is not always the case while teaching in a classroom" [Reinhard/reinsamba]15
Bulk atmospheric deposition data along an agricultural-to-urban transect, central Ohio, 2021-2022
As precipitation acidity in the United States has decreased dramatically over the past forty years, new questions have emerged about the role of base cations and nitrogen (N) species in regulating precipitation pH. To address these questions, we studied precipitation chemistry in Ohio, a state with high N deposition and a mix of urban, industrial, and agricultural land use. This dataset contains precipitation chemistry and the flux of particulate matter collected at four sites along an agricultural-urban transect in central Ohio over the summers of 2021 and 2022. Samples were collected weekly from three or five replicate passive bulk deposition collectors at each site. In the lab, we filtered the samples and calculated the flux of total particulate matter. Liquid samples were measured for pH, nitrate, ammonium, and major ions. This dataset is complete and will not be added to in the future.
Dataset for "Size-dependence of Aerosol Iron Solubility in an Urban Atmosphere"
<p>Online PM concentration/weather condition and offline aerosol composition data for the study of "size-dependence of aerosol iron solubility in an urban atmosphere".</p>
Look Up Tables for removing atmospherical signal due to Rayleigh scattering and (urban) aerosols in visible satellite imagery
<p>Look Up Tables for removing atmospherical signal due to Rayleigh scattering and (urban) aerosols in visible satellite imagery</p> <p>LibRadTran simulations for various standard atmospheres for the correction of Rayleigh scattering and urban aerosol composition (Hess et al., 1998) within satellite images of channels in the visible spectral range.</p>
Measurement report: Atmospheric nitrate radical chemistry in the South China Sea influenced by the urban outflow of the Pearl River Delta
<p>Supporting dataset for Measurement report: Atmospheric nitrate radical chemistry in the South China Sea influenced by the urban outflow of the Pearl River Delta.</p>
Data for: Thiophenes as potential contributors to the formation of organosulfates and sulfonates in urban atmospheric aerosols
Open the record for dataset details and reuse information.
Temporal and spatial heterogeneity of atmospheric environmental and meteorological field in the urban street canyon——dataset
<p>Here are the datasets related to the article, "Temporal and spatial heterogeneity of atmospheric environmental and meteorological field in the urban street canyon". The datasets contain two part:</p> <ol> <li>The observation data and the analysis processing scripts (Folder observation).</li> <li>The data used for figures (Folder Fig_data).</li> </ol> <p>The CFD simulation configuration files can be found at https://doi.org/10.5281/zenodo.10841653.</p>
Temporal and spatial heterogeneity of atmospheric environmental and meteorological field in the urban street canyon——CFD configuration
<p>This dataset is about the configuration files for simulations conducted in OpenFOAM-v8 in multiple scenarios, categorized into the "wd" folder for simulating the wind field and the "conc" folder for the concentration field.</p>
Dataset for "Additive water uptake of the mixtures of urban atmospheric HULIS and ammonium sulfate, J. Geophys. Res. Atmos."
<p>The hygroscopicity of humic-like substances (HULIS) and their mixtures with ammonium sulfate in various proportions were investigated. The dataset in the Excel sheet contains measured hygroscopic growth factors and parameters derived from them, results of sensitivity analysis considering surfactants, and estimated proportions of multiply charged particles for Zhou et al. in Journal of Geophysical Research: Atmospheres. The dataset is based on the work supported by JSPS KAKENHI JP19H04253, JP20F20397, and JP23H00515.</p> <p>Ruichen Zhou, Sonia Afsana, Chenran Wei, and Michihiro Mochida: Additive water uptake of the mixtures of urban atmospheric HULIS and ammonium sulfate, J. Geophys. Res. Atmos.</p>
Atmospheric processing of loess dust particles in a polluted urban area of China
<p>STATEMENT</p> <p> </p> <p>This file is for the upload of data for 2018JD029956; the basic data for the article are available. The research data follows the FAIR Data Principles and demonstrate compliance with international standards for data repositories.</p> <p>Please contact Prof. Yang Chen (<a href="mailto:chenyang@cigit.ac.cn">chenyang@cigit.ac.cn</a>) if you have any questions.</p>
Dataset for "Relationships of the Hygroscopicity of HULIS with Their Degrees of Oxygenation and Sources in the Urban Atmosphere, J. Geophys. Res. Atmos."
<p>The hygroscopicity of humic-like substances (HULIS) from Beijing aerosols and its relationship with the degrees of oxygenation and sources were investigated. The dataset in the Excel sheet contains the measured hygroscopicity parameter (<em>κ</em>), elemental ratios, and estimated intrinsic<em> κ</em> for HULIS, and the mass-based source contributions to HULIS, the <em>κ</em> estimated for total organic aerosol and the high-polarity fraction of water-soluble organic matter, and other data for Zhou et al. in Journal of Geophysical Research: Atmospheres. The concentrations and elemental ratios of HULIS and the source contributions to HULIS (both in µg/m<sup>3</sup> and percentage) were taken from Zhou et al. (2021). The dataset is based on the work supported by JSPS KAKENHI JP19H04253 and the National Natural Science Foundation of China (grant no. 41625014).</p> <p>Ruichen Zhou, Yange Deng, Bhagawati Kunwar, Qingcai Chen, Jing Chen, Lujie Ren, Kimitaka Kawamura, Pingqing Fu, and Michihiro Mochida: Relationships of the hygroscopicity of HULIS with their degrees of oxygenation and sources in the urban atmosphere, J. Geophys. Res. Atmos.</p> <p>Ruichen Zhou, Qingcai Chen, Jing Chen, Lujie Ren, Yange Deng, Petr Vodicka, Dhananjay K.Deshmukh, Kimitaka Kawamura, Pingqing Fu, and Michihiro Mochida: Distinctive sources govern organic aerosol fractions with different degrees of oxygenation in the urban atmosphere, Environ. Sci. Technol., 55, 4494–4503, 2021.</p>
Evaluation of a Partector Pro for atmospheric size distribution and number concentration measurements at an urban background site
<p>Number size distributions, total number concentrations and mean particle sizes have been measured for 70 days at an urban background site in Mülheim-Styrum, Germany with a handheld Partector Pro and a TSI mobility particle size spectrometer (MPSS). The aim of the study was to evaluate the performance of the Partecor Pro against the MPSS. The results show that the size distributions, measured with the Partector Pro agree with the MPSS mostly within ±25% for particle sizes below 113.5 nm, whereas higher, systematic differences were observed for larger particles. The measurement accuracy was shown to be dependent on the geometric mean diameter and the geometric standard deviation of the aerosol. Best results were found for the most abundant size distributions with geometric mean particle diameters ≥30 nm and geometric standard deviations larger than 1.8. The total number concentration, measured by the Partector Pro was found to be in excellent agreement with the MPSS with a slope of the linear fit of 0.9977 and a regression coefficient of R² = 0.9956. The agreement of the geometric mean particle diameter, determined with the Partector Pro and the MPSS was good, but moderately dependent on the particle size distribution. For mean particle sizes between 20 nm and 50 nm, the bias was within ±15%. Higher deviations of up to 30% were observed when the geometric mean particle sizes exceeded 70 nm and when the geometric standard deviations exceeded approximately 2.7.</p>
Model and observational dataset used in Tsiringakis, A. , Holtslag, A.A.M., Grimmond, S. and Steeneveld, G.J. Surface and atmospheric driven variability of the single-layer urban canopy model under clear sky conditions over London, Journal of Geophysical Research: Atmospheres
<p>This dataset contains:</p> <p>- Model output from the single-column version of the Weather Research and Forecasting model v3.8.1.</p> <p>- Observations from the KSSW tower (King's College London, United Kingdom) used for model evaluation.</p> <p>- The Single-column Urban Boundary Layer Inter-comparison Model Experiment (SUBLIME) case study description and external forcing file for the single-column version of Weather Research and Forecasting model.</p> <p>This dataset is used in :</p> <p>~Tsiringakis, A., Holtslag, A.A.M., Grimmond, S. and Steeneveld, G.J. Surface and atmospheric driven variability of the single-layer urban canopy model under clear sky conditions over London. Journal of Geophysical Research: Atmospheres</p>
Enhanced Ice Nucleation Activity by Metal Elements and Secondary Aerosols in Polluted Urban Atmosphere
Open the record for dataset details and reuse information.
Atmospheric deposition sampling across an urban gradient, using passive resin collectors
One of the "Grand Challenges" for environmental biology is to increase understanding of human perturbations of biogeochemical cycles (NRC 2001). One route for these perturbations to be affected is through the transfer of pollutants from the atmosphere to the biosphere. As part of the Ecosystem Response to Material Deposition from the Urban Atmosphere (N. B. Grimm, PD) study, CAP-LTER scientists are investigating the fate of anthropogenic organic C (oC) and inorganic nitrogen (iN) deposition and their effects on ecosystem functioning in unmanaged deserts within and near cities. We hypothesize that biogeochemical cycling will be qualitatively different in urban environments due to large inputs of biologically available C and N from the atmosphere. As part of this project, we will deploy filter banks equipped with size-selective aerosol inlets to collect particulate oC and iN compounds in the urban atmosphere. In order to estimate fluxes of these nutrients from the concentration measurements, we plan to deploy weather stations and to analyze these data to estimate deposition rates.
Dataset: Evaluation of a Partector Pro for atmospheric size distribution and number concentration measurements at an urban background site
<p>Dataset for manuscript, titled "Evaluation of a Partector Pro for atmospheric size distribution and number concentration measurements at an urban background site", submitted to Aerosol Research</p> <p>Includes raw data from Partector Pro as .txt files and from MPSS as .csv files. Processed hourly and daily averages are provided as .xlsx file.</p>
The process data used in paper 'Urbanization Alters Atmospheric Dryness through Land Evapotranspiration'
<p>The process data used in a journal paper ' <strong>Urbanization Alters Atmospheric Dryness through Land Evapotranspiration </strong>', including data used for each plot.</p> <p>The weather observation data are available online (http://data.cma.cn/en). The 20 urban sites dataset can be accessed from https://doi.org/10.5281/zenodo.7104984 under a Creative Commons Attribution licence (CC-BY-4.0). Impervious surface data set are free available online (http://data.starcloud.pcl.ac.cn/zh); and USGS FEWS NET SSEBop Actual Evapotranspiration Products (Version 5.0) are free available online (https://earlywarning.usgs.gov/fews/product/458). Global Land Surface Satellite (GLASS) LAI data sets (version 3.0) (http://www.glass.umd.edu/Download.html) are free available online; digital elevation model (DEM) (www.geodata.cn) are free available online.</p>
Impact of urbanized atmosphere-land processing to the near-ground distribution of air pollution over Central Liaoning Urban Agglomeration
<pre>------------------------- Content of the dataset ------------------------- ****** the experiment case (EXP) ; the control case (CTR) ******<br> 1. ABLH.rar contains the horizontal spatial distribution data of simulated Atmospheric Boundary Layer Height (ABLH) by CTR and EXP at four typical moments chosen in the paper, which can be utilized for drawing Fig. 8.<br><br>2. TSK.rar contains the horizontal spatial distribution data of simulated near-surface temperature (TSK) by CTR and EXP at four typical moments chosen in the paper, which can be utilized for drawing Fig. 4. <br>3. PM.rar contains the vertical profile data of simulated Particulate Matter concentrations by CTR and EXP during the study period in the paper, which can be utilized for drawing Fig. 11.<br><br>4. Timerseries_data.xlsx contains the observed and simulated data for timeseries of TSK, ABLH, PM and and the vertical profile data of temperature at four typical moments chosen in the paper,which can be utilized for drawing Fig. 3、5、7、9、10、S1-S4.<br><br>5. wrfbiochemi.rar contains the biogenic emissions data for simulation both for CTR and EXP.<br><br>6. wrffirechemi.rar contains the biomass burning emissions data for simulation both for CTR and EXP.<br><br>7. wrfchemi.rar contains the Anthropogenic emissions data for simulation both for CTR and EXP.<br><br>8. The file module_sf_pkuurban.F contains the main code of the improved urban canopy model, the Multi-Scale Urban Canopy Model (MSUCM), which is coupled to WRF-Chem and used by EXP. It is located in the phys/ directory and called by surface_driver.F.<br><br>------------------------- Contact information ------------------------- Zhenxin Liu liuzhenxin@nuist.edu.cn</pre>
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These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.