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Articles 1 - 5 of 5
Full-Text Articles in Physical Sciences and Mathematics
Blowing Snow At Mcmurdo Station, Antarctica During The Aware Field Campaign: Surface And Ceilometer Observations, Nicole A. Loeb, Aaron Kennedy
Blowing Snow At Mcmurdo Station, Antarctica During The Aware Field Campaign: Surface And Ceilometer Observations, Nicole A. Loeb, Aaron Kennedy
Atmospheric Sciences Faculty Publications
Blowing snow (BLSN) is an impactful process in cold climates, affecting regional thermodynamics, radiation properties, and the surface mass balance of snow. Though it has significant climatic impacts, the process is still poorly understood and not widely included in weather and climate models. In 2016, the AWARE Field Campaign saw the deployment of a large suite of in situ and remote sensing instruments to McMurdo Station, Antarctica allowing for investigation of BLSN. A ceilometer-based BLSN detection algorithm used elsewhere in Antarctica is applied to data from AWARE, yielding a BLSN frequency of 14.1% compared to 8.2% as detected by human …
A Bulk-Mass-Modeling-Based Method For Retrieving Particulate Matter Pollution Using Caliop Observations, Travis D. Toth, Jianglong Zhang, Jeffrey S. Reid, Mark A. Vaughan
A Bulk-Mass-Modeling-Based Method For Retrieving Particulate Matter Pollution Using Caliop Observations, Travis D. Toth, Jianglong Zhang, Jeffrey S. Reid, Mark A. Vaughan
Atmospheric Sciences Faculty Publications
In this proof-of-concept paper, we apply a bulk-mass-modeling method using observations from the NASA Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) instrument for retrieving particulate matter (PM) concentration over the contiguous United States (CONUS) over a 2-year period (2008–2009). Different from previous approaches that rely on empirical relationships between aerosol optical depth (AOD) and PM2.5 (PM with particle diameters less than 2.5 µm), for the first time, we derive PM2.5 concentrations, during both daytime and nighttime, from near-surface CALIOP aerosol extinction retrievals using bulk mass extinction coefficients and model-based hygroscopicity. Preliminary results from this 2-year study conducted over the CONUS show …
Characterizing The 2015 Indonesia Fire Event Using Modified Modis Aerosol Retrievals, Yingxi R. Shi, Robert C. Levy, Thomas F. Eck, Brad Fisher, Shana Mattoo, Lorraine A. Remer, Ilya Slutsker, Jianglong Zhang
Characterizing The 2015 Indonesia Fire Event Using Modified Modis Aerosol Retrievals, Yingxi R. Shi, Robert C. Levy, Thomas F. Eck, Brad Fisher, Shana Mattoo, Lorraine A. Remer, Ilya Slutsker, Jianglong Zhang
Atmospheric Sciences Faculty Publications
The Indonesian fire and smoke event of 2015 was an extreme episode that affected public health and caused severe economic and environmental damage. The MODIS Dark Target (DT) aerosol algorithm, developed for global applications, significantly underestimated regional aerosol optical depth (AOD) during this episode. The larger-than-global-averaged uncertainties in the DT product over this event were due to both an overly zealous set of masks that mistook heavy smoke plumes for clouds and/or inland water, and also an aerosol model developed for generic global aerosol conditions. Using Aerosol Robotic Network (AERONET) Version 3 sky inversions of local AERONET stations, we created …
Bio-Fuel Alternatives In South African Airways (Saa) Operations - Is It An Effective Response To Vulnerability Over Carbon Taxes And Penalty?, Daniel Kwasi Adjekum
Bio-Fuel Alternatives In South African Airways (Saa) Operations - Is It An Effective Response To Vulnerability Over Carbon Taxes And Penalty?, Daniel Kwasi Adjekum
Aviation Faculty Publications
The paper did a comparative analysis of the carbon emission and European Union Emission Trading Surcharges (EU ETS) of South African Airways (SAA) current fleet that used aviation jet A1 fuel and the same fleet if it had used a 25% bio-fuel ‘drop in’ for the European routes within the first quarter of the 2014 flying year (FY 14). Operational data in terms of the flight scheduled, aircraft type, total time enroute, route stage length, passenger estimates were obtained through SAA’s flight operations website. An independent t–test was conducted to compare means of the emissions. The mean carbon dioxide …
Is The Gefion Dynamical Asteroid Family The Source Of The L-Chondrites?, R. V. Roberts, Michael J. Gaffey, Sherry Fieber-Beyer
Is The Gefion Dynamical Asteroid Family The Source Of The L-Chondrites?, R. V. Roberts, Michael J. Gaffey, Sherry Fieber-Beyer
Space Studies Faculty Publications
No abstract provided.