A5079679269- Meteorological Phenomena and Simulations
- Atmospheric chemistry and aerosols
- Atmospheric Ozone and Climate
- Atmospheric and Environmental Gas Dynamics
- Climate variability and models
- Atmospheric aerosols and clouds
- Lightning and Electromagnetic Phenomena
- Wind and Air Flow Studies
- Fire effects on ecosystems
- Fluid Dynamics and Turbulent Flows
- Air Quality and Health Impacts
- Ocean Waves and Remote Sensing
- Tropical and Extratropical Cyclones Research
- Icing and De-icing Technologies
- Aerospace Engineering and Energy Systems
- Phase Change Materials Research
- Advanced Optical Sensing Technologies
- Air Quality Monitoring and Forecasting
- Gas Sensing Nanomaterials and Sensors
- Solar and Space Plasma Dynamics
- Solar Thermal and Photovoltaic Systems
- Oceanographic and Atmospheric Processes
- Solar Energy Systems and Technologies
- Remote Sensing in Agriculture
- Groundwater and Isotope Geochemistry
Atmospheric and Environmental Research
2020-2022
Oldham Council
2022
Florida State University
2013-2020
Patrick Air Force Base
2018
Environmental Protection Agency
2016-2017
Research Triangle Park Foundation
2016-2017
Heriot-Watt University
2012
The Community Multiscale Air Quality (CMAQ) model is a comprehensive multipollutant air quality modeling system developed and maintained by the US Environmental Protection Agency's (EPA) Office of Research Development (ORD). Recently, version 5.1 CMAQ (v5.1) was released to public, incorporating large number science updates extended capabilities over previous release (v5.0.2). These include following: improvements in meteorological calculations both Weather Forecast (WRF) used provide fields...
We conduct the first 4D-Var inversion of NH3 accounting for bi-directional flux, using CrIS satellite observations over Europe in 2016. find posterior emissions peak more springtime than prior at continental to national scales, and annually they are generally smaller central Europe, but larger most rest Europe. Annual anthropogenic 25 European Union members (EU25) 25% higher very close (<2% difference) other inventories. Our annual EU25, UK, Netherlands, Switzerland 10%-20% when treating...
Convective rainfall is often a large source of error in retrospective modeling applications. In particular, positive biases commonly exist during summer months due to overactive convective parameterizations. this study, lightning assimilation was applied the Kain-Fritsch (KF) scheme improve simulations using Weather Research and Forecasting (WRF) model. The method has straightforward approach: force KF deep convection where observed and, optionally, suppress absent. WRF were made with...
Abstract. The Asian summer monsoon is a prominent feature of the global circulation that associated with an upper-level anticyclone (ULAC) stands out vividly in satellite observations trace gases. ULAC also important region troposphere-to-stratosphere transport. We ran Weather Research and Forecasting (WRF) model at convective-permitting scales (4 km grid spacing) between 10 20 August 2012 to understand role convection rapidly transporting boundary layer air into ULAC. Such high-resolution...
Abstract Large‐eddy simulations (LES) and observations are often combined to increase our understanding improve the simulation of deep convection. This study evaluates a nested LES method that uses Weather Research Forecasting (WRF) model and, specifically, tests whether approach is useful for studying convection during real‐world case. The was applied on 2 September 2013, day continental occurred Studies Emissions Atmospheric Composition, Clouds Climate Coupling by Regional Surveys (SEAC 4...
Abstract Vertical water vapor transport is examined for tropical cyclone (TC) Ingrid (2013), a Category 1 storm in the Gulf of Mexico that contained deep convection, including numerous overshooting tops. The study employs high‐resolution numerical simulations using Weather Research and Forecasting model with smallest grid spacing 1.33 km top 10 hPa (~31 km) extends into lower stratosphere. Area‐averaged values vertical motion, content, its temporal change, are presented as whole individual...
Abstract The convectively driven transport of soluble trace gases from the lower to upper troposphere can occur on timescales less than an hour, and recent studies suggest that microphysical scavenging is dominant removal process tropospheric ozone precursors. We examine processes responsible for vertical transport, entrainment, precursors (formaldehyde peroxides) midlatitude convective storms sampled 2 September 2013 during Studies Emissions, Atmospheric Composition, Clouds Climate Coupling...
Abstract. The Asian summer monsoon is a prominent feature of the global circulation that associated with an upper-level anticyclone (ULAC) stands out vividly in satellite observations trace gases. ULAC also important region troposphere-to-stratosphere transport. We ran Weather Research and Forecasting (WRF) model at convective-permitting scales (4 km grid spacing) between 10–20 August 2012 to understand role convection transporting boundary layer air into anticyclone. Such high-resolution...
Earth and Space Science Open Archive This preprint has been submitted to is under consideration at Journal of Geophysical Research - Atmospheres. ESSOAr a venue for early communication or feedback before peer review. Data may be preliminary.Learn more about preprints preprintOpen AccessYou are viewing the latest version by default [v1]4D-Var inversion European NH3 emissions using CrIS measurements GEOS-Chem adjoint with bi-directional uni-directional flux schemesAuthorsHansenCaoiDDaven...
The lightning assimilation (LTA) technique in the Kain-Fritsch convective parameterization Weather Research and Forecasting (WRF) model has been updated applied to continental hemispheric simulations using flash data obtained from National Lightning Detection Network (NLDN) World Wide Location (WWLLN), respectively. LTA uses trigger via realistic temperature moisture perturbations. impact of different values for cumulus parameters associated with scheme on without were evaluated both...
Abstract. The lightning assimilation (LTA) technique in the Kain-Fritsch convective parameterization WRF model has been updated and applied to continental hemispheric simulations using flash data obtained from National Lightning Detection Network (NLDN) World Wide Location (WWLLN), respectively. impact of different values for cumulus parameters associated with scheme on without LTA were evaluated both simulations. Comparisons gauge-based rainfall products near-surface meteorological...