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Showing 1 to 20 of 147 for “"WRF"”.
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WRF-based dynamical downscaling over High Mountain Asia
… the Weather Research and Forecasting Model (WRF). The HAR v2 provides atmospheric data at 10 km grid spacing and hourly temporal resolution. It is currently available from 2000 to 2020 and will be extended back to 1979. Compared to the old version, the HAR v2 covers a broader area and a …
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WRF-Var implementation for data assimilation experimentation at MIT
… goal of this Masters project is to implement the WRF model with 3D variational assimilation (3DVAR) at MIT. A working version of WRF extends the scope of experimentation to mesoscale problems in both real and idealized scenarios. A state-of-the-art model and assimilation package can now be used to …
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Simulation of an extreme wildfire event using the WRF-Chem model
… προσομοιώθηκε με το ατμοσφαιρικό μοντέλο WRF-Chem το οποίο είναι πλήρως συζευγμένο με τη χημεία και συνυπολογίζει τις αλληλεπιδράσεις μεταξύ αερολυμάτων και ακτινοβολίας. Δορυφορικά προϊόντα και δεδομένα παρατήρησης από σταθμούς χρησιμοποιήθηκαν για την αξιολόγηση των αποτελεσμάτων των …
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Modeling nighttime chemistry with WRF/chem: sensitivity to vertical resolution and boundary layer parameterization
… boundary layer parameterizations within the WRF-Chem model, as well as the sensitivity to model resolution in the vertical direction. We use a 1-D version of WRF-Chem to systematically investigate a summer and a winter case of meteorological conditions. In the analysis, we compare the …
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An Analysis of the Differences Between Two Seasonal Saudi Arabian Dust Storms Using WRF-Chem
… event is forced by more regional dynamics. The WRF-Chem (Weather Research and Forecasting/Chemistry) model was validated against the MERRA data and simulated these cases to estimate the TKE at low-levels for both the Sharav and Shamal case studies which caused high dust concentrations with a …
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Extreme events over the contiguous United States portrayed in a CESM-WRF dynamical downscaling framework
A dynamical downscaling framework is adopted to explore historical (1950-1999) and projected (2050-2099) behavior of extreme precipitation (PR), maximum temperature (TMAX) and minimum temperature (TMIN) events within the contiguous United States. Compared to reanalysis data, simulations represent …
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Examining Transportation of Natural Gas Exploration Emissions in the High Plains Region Using the Wrf-Chem Model
… the Weather Research and Forecasting-Chemistry (WRF-Chem) model and observations from the Environmental Protection Agency (EPA)-regulated ground-level ultraviolet spectrophotometry instruments. Air quality is simulated in both cities’ regions and focuses on advection from urban sources and …
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A numerical study of cropland-atmosphere feedbacks by incorporating a crop growth module in the WRF model
… in the Weather Research Forecasting (WRF) model. This coupled model has the capability to explore cropland-atmosphere feedbacks at a high spatial resolution at mesoscale. Results from soybean fields in Nebraska and Illinois show that the crop growth depends directly on temperature, …
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Toward assessing the effects of aerosols on deep convection: a numerical study using the WRF-Chemistry model
… The Weather Research and Forecasting model (WRF) has recently been coupled with an atmospheric chemistry suite and is jointly referred to as WRF-Chem, allowing atmospheric chemistry and meteorology to influence each other’s evolution within a mesoscale modeling framework. Provided that the …
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The influence of horizontal resolution and boundary forcing in simulating hurricanes over the South Atlantic Ocean using WRF
… of the Weather Research and Forecasting model (WRF) in capturing the impacts of the warming on hurricanes. However, none of the studies have investigated how the model's horizontal resolution and boundary forcing could alter the characteristics of simulated hurricanes. The present study used WRF …
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A flood preparedness tool for Chicago: Weather Research and Forecasting (WRF) model downscaling to improve rainfall forecasts and flood mitigation
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-11 without embargo terms
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Deep Learning Architectures for Improving Weather Research and Forecasting (WRF) Precipitation Estimates and Landslide Susceptibility Mapping: A Case Study of Puerto Rico
… years, the Weather Research and Forecasting (WRF) model has been applied in PR to support daily weather forecasting and hurricane modeling, providing critical insights into atmospheric dynamics in the region. Nonetheless, despite its numerical features, significant uncertainties persist in …
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An investigation of the development of supercells in the Indiana and Ohio tornado outbreak of 24 August 2016 using a WRF model simulation
… wind shear. A Weather Research and Forecasting (WRF) model simulation accurately captures the environment during this event, depicting a cluster of elevated thunderstorms developing in the vicinity of an outflow boundary during the early morning hours of 24 August. Trajectory analyses indicate …
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Application of the Weather Research and Forecasting (WRF) Model to Simulate a Squall Line: Implications of Choosing Parameterization Scheme Combinations and Model Initialization Data Sets
… Research and Forecasting Model version three (WRF) as they related to this event. These examinations included cloud microphysics (WRF Single-Moment 3-class, 6-class, and Goddard), cumulus parameterization (Kain-Fritsch and Bets-Miller-Janjic) and planetary boundary layer schemes …
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A case study of weather research and forecasting model over the Midwest USA
… this thesis, the Weather Research and Forecast (WRF) model was used as an input to a CTM and a sensitivity analysis of 17 WRF runs was conducted to explore the optimum physics configuration in 6 physics categories for the Midwest USA in May 2011, including cumulus, surface layer, microphysics, …
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Parameterizing PSD assumptions for remote sensing algorithms
… using the Weather Research and Forecasting (WRF) model. WRF simulations for each case use two different microphysical parameterizations: the Goddard 6-class scheme and the WRF single moment 6-class scheme. Simulations of the case studies includes construction of vertical columns using WRF …
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North American monsoon precipitation and its precursors: processes at the seasonal and diurnal scale
The Weather Research and Forecasting (WRF) model was run at 100~km, 25~km, and 10~km resolution for the 2000 and 2004 monsoon seasons (July-September), a dry year and a wet year. These years were chosen to represent contrasting precipitation outcomes to assure that results were robust across …
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Data assimilation and dynamical downscaling of remotely-sensed precipitation and soil moisture from space
… using the Weather Research and Forecasting (WRF) model with four-dimensional variational data assimilation (4D-Var) and (2) a variational data assimilation system using spatio-temporally varying background error covariance for directly assimilating satellite soil moisture data into the Noah …
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