Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 50 for “"Horizontal resolution"”.
-
Simulating the Characteristics of Tropical Cyclones over the South-West Indian Ocean: Sensitivity to Model Horizontal Resolution
… of four global climate models and one variable-resolution climate model in simulating the characteristics of SWIO TC activity through both a climatological and individual event analysis, and investigates the influence of horizontal resolution on the simulated TC characteristics. The …
-
The influence of horizontal resolution and boundary forcing in simulating hurricanes over the South Atlantic Ocean using WRF
… 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 to perform a series of experiments to simulate two hurricanes (Hurricane Catarina and Hurricane Anita) over the SAO at …
-
Development of sea ice diagnostic tools for high-resolution simulations of the Climate Model Intercomparison Project (HiResMIP)
… to more thoroughly understand the role that horizontal resolution plays in the performance of climate modelling, this minor-dissertation describes the development and initial testing of a High-Resolution Sea Ice Diagnostics Toolset. This is designed to evaluate the influence increased …
-
Understanding Uncertainties for Polar Mesospheric Cloud Retrievals and Initial Gravity Wave Observations in the Stratopause from the Cloud Imaging and Particle Size Instrument
… by 80° cross track (1000 km) field of view at a horizontal resolution of 1 by 2 km in the nadir. The satellite is in a sun synchronous orbit with an approximately noon local time equator crossing. The observed albedo is due to Rayleigh scattered sun light from an altitude of approximately 50 km …
-
Representation of Mean Precipitation and Decadal Variability in Atmosphere Models
… precipitation is better represented at higher horizontal resolution, while the model time step has a limited effect on total precipitation extremes. For European winter precipitation, internal atmospheric variability dominates the variability, whereas SST forcing plays a relatively minor role. …
-
Strategies for Coupling Global and Limited-Area Ensemble Kalman Filter Assimilation
… the north-east Pacific. The GFS is integrated at horizontal resolution T62 (about 150 km in the middle latitudes), while the RSM is integrated at horizontal resolution 48 km. Experiments are carried out both under the perfect model hypothesis and in a realistic setting. The coupling strategies are …
-
Future climate evolution in the canary current upwelling system from a regional coupled model
… for a proper representation of the CCUS, a high horizontal resolution is required. In this study we assess present and future climate of the CCUS using an atmosphere¿ocean regionally coupled model. The regional coupled model consists of a global oceanic component with increased horizontal …
-
Improving integrated wildfire management in the Fynbos Biome of South Africa using information on synoptic-scale atmospheric features that promote wildfires
… System Reanalysis datasets (CFSR) at a 0.5°x0.5° horizontal resolution. The Self Organising Maps (SOMs) technique was used to classify the FDI (anomaly) patterns on the fire days, and the atmospheric dynamics associated with each pattern were studied.
-
A case study of weather research and forecasting model over the Midwest USA
… to investigate model sensitivity to the horizontal resolution. Compared with the starting run, the optimum run was found to produce better temperature (0.35 K decrease in hourly mean bias and 0.26 K decrease in hourly root mean square error), pressure (4.3 Pa decrease in hourly mean bias …
-
On the warm bias along the South-West African Coast in coupled models : an oceanic perspective
… the conclusion is reached that the insufficient resolution of the ocean component in the coupled model is responsible for the warm biases over the SWA coastal region. The coarse resolution used in the ocean model has an artificially stretched coastal side-wall boundary layer, which induces a …
-
On the warm bias along the South-West African Coast in coupled models : an oceanic perspective
… the conclusion is reached that the insufficient resolution of the ocean component in the coupled model is responsible for the warm biases over the SWA coastal region. The coarse resolution used in the ocean model has an artificially stretched coastal side-wall boundary layer, which induces a …
-
Preparation for CWRF downscaling climate prediction over Pakistan: development of iCWPS surface processing and analysis of regional precipitation teleconnection
… construction of the essential SBCs for any given horizontal resolution and domain position; and [2] Analysis of Pakistan precipitation teleconnection with planetary circulation patterns that facilitate the optimal domain position for the CWRF to realistically integrate large-scale forcings. …
-
Three-dimensional water vapor retrieval using a network of scanning compact microwave radiometers
… measurements of water vapor aloft with high time resolution and sufficient spatial resolution have the potential to improve forecast skill for the initiation of convective storms. Such measurements may be used for assimilation into and validation of numerical weather prediction (NWP) models. …
-
Studies of South China Sea circulation and thermal structure using a three dimensional numerical model
… using the Princeton Ocean Model (POM) with 20 km horizontal resolution and 23 sigma levels conforming to a realistic bottom topography. A sixteen month control run was performed using climatological monthly mean wind stresses and restoring type salt and heat fluxes as surface forcing terms and …
-
Forecasting the nighttime evolution of radio wave ducting in complex terrain using the MM5 numerical weather model
… sensitivity of model predictions to changes in horizontal and vertical resolution is also tested. Results of these analyses reveal that rapid radiational cooling around sunset and subsequent cold air pooling establish vertical temperature gradients that, along with pre-existing moisture …
-
A Comparison of Lidar Generated Channel Features with Ground-Surveyed Channel Features in the Little Creek Watershed
… that with this level of vertical precision and horizontal resolution it would be difficult to detect change in bankfull channel characteristics of a relatively small channel, such as Little Creek. These difficulties are largely attributed to poor point coverage in forested, steep, and …
-
Retrieval of cloud-cleared atmospheric temperature profiles from hyperspectral infrared and microwave observations
… of the atmosphere from 0-15 km in clear air at a horizontal resolution of 2000 km2 and a vertical resolution of 1 km. RMS radiance errors under cloudy conditions for altitudes from 0 to 10 kilometers ranged from 1.25 K to 0.1 K for radiance retrievals near 15 microns, and from 0.8 K to 0.05 K for …
-
Evaluating CMIP6 Models in Simulating Southwest Indian Ocean Tropical Cyclone Activity (1979–2014): Comparison with ERA-5 Reanalysis
… study illustrates how different models of horizontal resolution simulate tropical cyclone activities and offers insights on how to improve future projections of tropical cyclone activity over the SWIO region.
-
Evaluating the 3D EnKF - VAR Hybrid Data Assimilation in GSI for Surface and Upper Level Analyses
… assimilation ingests the 1 hour forecast High-Resolution Rapid Refresh (HRRR) and The Global Ensemble Forecast System, as the background and ensemble member set, respectively. Also, the conventional and satellite radiance observations are assimilated. The analysis covers a CONUS domain and has …
-
A comparison of upper front strength as analyzed by NORAPS and as observed by ACARS-equipped aircraft
Upper fronts are associated with strong horizontal gradients of both temperature and wind speed on a scale that is not well resolved by rawinsonde observations. Even so, mesoscale data assimilation systems are capable of ingesting observations from a variety of sources and depicting such features. …
Page 1 of 3