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Recent Highlights
Aerosol vertical distributions Impacts on Warm Clouds Using ARM observations
August 2023
Aerosol-warm cloud interactions vary with aerosol vertical distribution types.
Aerosol and Ocean Coupling Affecting TC's Destructiveness
May 2022
The simulations with an atmosphere-ocean coupled framework (WRF-ROMS) reveal that an enhanced destructive power of the storm, as reflected by larger integrated kinetic energy, heavier precipitation, and higher sea-level rise, is linked to the combined effects of aerosols and subsequent ocean feedbacks. Both accumulated precipitation and storm surge are enhanced with elevated aerosol concentrations, implying exacerbated flooding damage over the coastal region. The ocean feedback following the aerosol effects tends to mitigate the vertical mixing cooling and offsets the aerosol-induced storm weakening, by invigorating cloud and precipitation near the eyewall region.
Marine INPs Modifying AR Orographic Clouds and Precipitation
May 2022
By modeling studies using the chemistry version of the WRF-SBM at 1-km grid spacing, with ice nucleation connected with dust and marine aerosols, Lin et al. (2022) reveal that the marine ice nuclei particles (INPs) enhance the formation of ice and snow, leading to less shallow warm clouds but more mixed-phase and deep clouds, as well as to a large spillover effect of precipitation after Atmospheric River (AR) landfall over the Western United States.
This study was highlighted by nature reviews earth & environment (https://www.nature.com/articles/s43017-022-00319-3).
Urbanization Effects on Convective Storm
March 2021
Lin et al. (2021) conducted cloud-resolving scale (1 km) simulations using WRF-Chem-SBM-MOSAIC and shows that the urban land effect of Kansas City initiated a much stronger convective cell, intensified storm convection, and diverted the storm toward the city. The joint effect of urban land and anthropogenic aerosols enhances occurrences of both severe hail and significant severe hail by ~20% by enhancing hail formation and growth from riming.
This study was featured by DOE NERSC and Science Daily press:
https://www.sciencedaily.com/releases/2020/12/201215164921.htm
Dicarbonyl Acid Clustering with SA–base System
April 2019
Lin et al. (2019) performed quantum chemical calculations on the interactions between succinic acid (SUA) and clusters consisting of SA-ammonia (AM)∕dimethylamine (DMA) in the presence of hydration of up to six water molecules, suggesting that the multicomponent nucleation involving organic acids, sulfuric acid, and base species promotes new particle formation in the atmosphere, particularly under polluted conditions with a high concentration of diverse organic acids.
Carbonaceous Emissions from Open Biomass Burning
September 2013
Zhang, Shao, Lin et al. (2013) measured emissions from burning major agricultural residue were measured through laboratory simulations using a self-designed dilution chamber system. Non-methane hydrocarbons (NMHCs) emitted from crop straw open burning were dominated by C2 hydrocarbons, and acetone and aldehyde were major OVOCs species in open straw burning.
Detecting Tornado Tracks Using MODIS Shortwave Infrared Channels
April 2023
Wang, Lin et al. (2023) showcases an application of using MODIS data to detect tornado damage tracks over northeastern Arkansas after the deadly December 10-11, 2021 tornado outbreak. The special soil type with rich clay content well retains the tornado scars, whose moisture content is higher than the surrounding area, causing significant signals on MODIS shortwave infrared channels.
The study was featured in several scientific news press:
https://www.sciencenews.org/article/satellite-imagery-tornado-tracks
https://pressnewsagency.org/satellite-images-reveal-hidden-tornado-tracks/
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