A5000045644- Climate variability and models
- Meteorological Phenomena and Simulations
- Tropical and Extratropical Cyclones Research
- Oceanographic and Atmospheric Processes
- Ocean Waves and Remote Sensing
- Urban Heat Island Mitigation
- Atmospheric and Environmental Gas Dynamics
- Atmospheric chemistry and aerosols
- Coastal and Marine Management
- Geological and Geophysical Studies
- Marine and coastal ecosystems
- Wind and Air Flow Studies
- Plant Water Relations and Carbon Dynamics
- thermodynamics and calorimetric analyses
- Cryospheric studies and observations
- Theoretical and Computational Physics
- Metal Forming Simulation Techniques
- Complex Systems and Time Series Analysis
- Methane Hydrates and Related Phenomena
- Hydrology and Watershed Management Studies
- Arctic and Antarctic ice dynamics
- Atmospheric aerosols and clouds
- Seismic Waves and Analysis
- Earthquake Detection and Analysis
- Hydrology and Drought Analysis
Florida Institute of Technology
2014-2025
ORCID
2021
University of Hawaiʻi at Mānoa
2011-2012
University of Hawaii System
2012
Pacific International Center for High Technology Research
2012
University of Miami
2008-2010
Indian Institute of Science Bangalore
2002
Abstract Mechanisms for extratropical influences on the initiation of Madden–Julian oscillation (MJO) are investigated using numerical simulations and a global reanalysis product. Previous by tropical channel model captured timing gross features initiations two MJO events suggested that were due to from extratropics. In this study, latitudinal transport momentum extratropics is found be crucial in generating lower tropospheric westerlies tropics associated with initiation. The diagnoses...
ABSTRACT Skillful prediction of the Mid‐Summer Drought (MSD) is important for various socioeconomic sectors in southern Mexico, Central America and Caribbean. However, operational forecasting errors MSD have rarely been evaluated systematically. In this study, we address research gap by examining forecasts derived from North American Multimodel Ensemble (NMME; 1991–2020). We assess these before after applying a Model Output Statistics (MOS) scheme based on Canonical Correlation Analysis...
This study presents a 21-year climatology (1998–2018) of Easterly Wave Disturbances (EWDs) over the Tropical South Atlantic (TSA). The identification these systems was performed subjectively using infrared satellite images and fields relative vorticity streamlines at 1000, 850, 700, 500, 200 hPa levels from ERA-Interim (ERAI) reanalysis. Additionally, TracKH automatic tracking algorithm applied, successfully capturing approximately 66% identified events. A total 518 EWDs were...
Abstract A mesoscale tropical channel model is used to study the long-standing problem of initiation Madden–Julian oscillation (MJO). With initial and lateral boundary conditions provided by a global reanalysis, this able reproduce gross features two observed MJO events up 2 months after start simulations. This leads conjecture that these are generated influences from boundaries. supported series sensitivity tests. These tests demonstrate simulated does not critically depend on detailed...
Abstract A set of atmospheric general circulation model (GCM) experiments is designed to explore the relative roles circumnavigating waves and extratropics on Madden–Julian oscillation (MJO). In a “control” simulation, forced by climatological monthly sea surface temperature for 20 yr. first sensitivity experiment, prognostic variables are relaxed in tropical Atlantic region (20°S–20°N, 80°W–0°) toward “controlled” annual cycle suppress influences from waves. second 20°–30° latitude zones...
Abstract Harmful Algal Blooms lead to multi-billion-dollar losses in the United States due shellfish closures, fish mortalities, and reluctance consume seafood. Therefore, an improved early seasonal prediction of harmful algal blooms severity is important. Conventional methods for using nutrient loading as primary driver have been found be less accurate during extreme bloom years. Here we show that a machine learning approach observed loading, large-scale climate indices can improve Lake...
Abstract To better understand the Madden–Julian Oscillation (MJO) in Maritime Continent (MC), events from 1980 to 2019 were classified as active or weakening according propagation characteristics and amplitude changes two leading indices, Real-time Multivariate MJO (RMM) index Outgoing Longwave Radiation (OLR) Index (OMI). Active had larger amplitudes than events, those differences appeared at day − 3 RMM 8 OMI remained through + 15 both indices (day 0 marked an event entered MC). Thus,...
Abstract The surface sensible heat flux induced by precipitation ( Q P ) is a consequence of the temperature difference between and rain droplets. Despite its seemingly negligible nature, frequently omitted from both meteorological climatological models. Nevertheless, it important to acknowledge numerous occasions in which instantaneous values can be significant, particularly during extreme events. This study undertakes comprehensive assessment across contiguous United States (CONUS)...
Observations from moored buoys during spring of 1998–2000 suggest that the warming mixed layer (∼20 m deep) north Indian Ocean warm pool is a response to net surface heat flux Q (∼100 W −2 ) minus penetrative solar radiation pen (∼45 ). A residual cooling due vertical mixing and advection indirectly estimated be about 25 . The rate typical values not very sensitive depth if it lies between 10 30 m.
Abstract The low-latitudinal cyclones (LLCs, originating between 5°N–10°N) constitute ≈40% of tropical (TCs) formed in the Bay Bengal (BoB). We investigate interannual variability post-monsoonal (October to December) BoB LLCs and their teleconnection with El Niño Southern Oscillation (ENSO) Indian Ocean Dipole (IOD). It is found that years fewer number are associated anomalous equatorial easterlies largely connected positive IOD. Likewise, westerly phases, often La Niña negative IOD years,...
Abstract Precipitation can induce a surface sensible heat flux since the raindrops are generally cooler than surface. This precipitation‐induced ( Q P ) is typically ignored in models. However, during heavy rainfall, be large and may not negligible such as over India summer monsoon season. We provide first results of incorporating simulation that shows ∼2% (∼5%) reduction precipitation compared to without monsoonal active phase 2017 (2018). was primarily due vertical advection moisture....
Abstract Numerical simulations without hydrological processes tend to overestimate the near-surface temperatures over urban areas. This is presumably due underestimation of surface latent heat flux. To test this hypothesis, existing single-layer canopy model (SLUCM) within Weather Research and Forecasting Model evaluated Houston, Texas. Three were conducted during 24–26 August 2000. The include use default “BULK” scheme, SLUCM processes, with processes. results show that BULK scheme was...
CORRESPONDING AUTHOR: Shannon M. McNeeley, Advanced Study Program, Research Applications Laboratory/Integrated Science NCAR, P.O. Box 3000, Boulder, CO 80307, E-mail: smcneele@ucar.edu
Abstract The land‐sea contrast in the Maritime Continent (MC) has been found to influence Madden–Julian Oscillation (MJO). However, specific contribution from individual islands precipitation over surrounding during MJO propagation is not well known. We that when an island removed presence of lower‐tropospheric westerlies, increases are located its east due strengthening westerlies. Frictional convergence stronger aided by Coriolis, leads increase vertical advection moisture and east. On...
Due to rapid urbanization, the near-surface meteorological conditions over urban areas are greatly modulated. To capture such modulations, sophisticated parameterizations with enhanced hydrological processes have been developed. In this study, we use single-layer canopy model (SLUCM) available within Weather Research and Forecasting (WRF) assess response of temperature, wind, moisture advection under impact green roof. An ensemble simulations different planetary boundary layer (PBL) schemes...