Haochen TanArgonne National Laboratory | ANL · Division of Environmental Science
Doctor of Philosophy
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Citations since 2017
10 Research Items
This study examined the impact of cool roofs, green roofs, and solar panel roofs on near-surface temperature and cooling energy demand through regional modeling in the Chicago metropolitan area (CMA). The new parameterization of green roofs and solar panel roofs based on model physics has recently been developed, updated, and coupled to a multilaye...
The role of topography in the diurnal cycle of precipitation is analyzed during the propagation of a Madden-Julian Oscillation (MJO) event over the Islands of the Maritime Continent using cloud-permitting simulations. The control simulation (CTL) using realistic topography captures the timing, magnitude, and location of the observed diurnal cycle o...
Precipitation cools the surface because the temperature of raindrops is typically lower than the temperature of the surface. While this precipitation‐induced sensible heat flux (QP) due to the temperature difference between the surface and raindrops is thought to be small and is typically ignored in weather and climate models. However, there are ma...
Plain Language Summary Regional and global models are the two major tools to study and forecast weather and climate. Both types of models have advantages and disadvantages concerning horizontal resolution, area coverage, model physics and computational cost, among others. Another type of model configuration is a channel model, which is defined as z...
The land-sea contrast in the Maritime Continent (MC) has been found to influence the Madden–Julian Oscillation (MJO). However, the specific contribution from individual islands to the precipitation over the surrounding islands during MJO propagation is not well known. We found that when an island is removed in the presence of lower-tropospheric wes...
The role of advection of heat and momentum on the evolution of near-surface temperature and wind is evaluated in urban-aware simulations over Houston under dry conditions on a light-wind day. Two sets of experiments, each consisting of four simulations using different planetary boundary layer (PBL) schemes, were conducted over 48 hours using the de...
The role of topography on a Madden–Julian Oscillation (MJO) event in the Maritime Continent (MC) is explored using a regional model. Four simulations are conducted: lower-resolution (12 km) simulations using cumulus parameterization in the presence (LR) and absence (LR-Flat) of topography, and higher-resolution (4 km) simulations without cumulus pa...
Due to rapid urbanization, the near-surface meteorological conditions over urban areas are greatly modulated. To capture such modulations, sophisticated urban parameterizations with enhanced hydrological processes have been developed. In this study, we use the single-layer urban canopy model (SLUCM) available within the Weather Research and Forecas...
Numerical simulations without hydrological processes tend to overestimate the near surface temperatures over urban areas. This is presumably due to underestimation of surface latent heat flux. To test this hypothesis, the existing single-layer urban canopy model (SLUCM) within the Weather Research and Forecasting (WRF) model is evaluated over Houst...
I tried to download some 3D reflectivity datasets over CONUS. The Earthdata Search has NEXRAD mosaic but is only available for 3 months in 2020. The radar data for NEXRAD is also station data. The only one I found that is 3D (mosaic) is the National Reflectivity Mosaic data but it is not available for download at https://www.ncei.noaa.gov/maps/radar/ . Does anyone know how to download this data or where to acquire the 3D reflectivity dataset?