Leah D. Grant
YOU?
Author Swipe
View article: How Spatially Variable Are Tropical and Subtropical Convective Environments?
How Spatially Variable Are Tropical and Subtropical Convective Environments? Open
Quantifying horizontal spatial variability in high‐resolution simulated convective environments is key to improving parameterizations for coarser models, accurately comparing models and observations, and understanding the physical processe…
View article: The Entrainment of Air from Rainy Surface Regions and its Implications for Bioaerosol Transport in Three Deep Convective Storm Morphologies
The Entrainment of Air from Rainy Surface Regions and its Implications for Bioaerosol Transport in Three Deep Convective Storm Morphologies Open
The rain produced by thunderstorms has been observed to coincide spatially and temporally with enhanced near-surface concentrations of warm-temperature ice nucleating particles (INPs) of biological origin. However, the air in rainy regions…
View article: Ice‐Nucleating Particles Are Emitted by Raindrop Impact
Ice‐Nucleating Particles Are Emitted by Raindrop Impact Open
Ice‐nucleating particles (INPs) play a key role in ice formation and cloud microphysics and thus significantly impact the water cycle and the climate. However, our understanding of atmospheric INPs, particularly their sources, emissions, a…
View article: Characterizing Thermodynamic Observations from Unshielded Multirotor Drone Sensors
Characterizing Thermodynamic Observations from Unshielded Multirotor Drone Sensors Open
Multirotor drones (also known as small Uncrewed Aerial Systems [sUAS] or small Uncrewed Aerial Vehicles [sUAV]) are being increasingly used in atmospheric research to make measurements of the lower atmosphere, and their use is poised to in…
View article: How Much Convective Environment Subgrid Spatial Variability Is Missing Within Atmospheric Reanalysis Data Sets?
How Much Convective Environment Subgrid Spatial Variability Is Missing Within Atmospheric Reanalysis Data Sets? Open
Convective cloud processes are sensitive to environmental conditions that vary on scales smaller than reanalysis data sets (sub‐reanalysis scales). Convective environment variability within areas representative of reanalysis data sets is q…
View article: How Much Convective Environment Subgrid Spatial Variability is Missing within Atmospheric Reanalysis Datasets?
How Much Convective Environment Subgrid Spatial Variability is Missing within Atmospheric Reanalysis Datasets? Open
Convective cloud processes are sensitive to environmental conditions that vary on scales smaller than reanalysis datasets (sub-reanalysis scales). Convective environment variability within areas representative of reanalysis datasets is qua…
View article: Deforestation‐Driven Increases in Shallow Clouds Are Greatest in Drier, Low‐Aerosol Regions of Southeast Asia
Deforestation‐Driven Increases in Shallow Clouds Are Greatest in Drier, Low‐Aerosol Regions of Southeast Asia Open
Anthropogenic activity drives extensive tropical deforestation, particularly in Southeast Asia where 16% of total forest cover was lost between 2000 and 2020. While land surface changes significantly affect the atmosphere, their net impact…
View article: How Variable Are Cold Pools?
How Variable Are Cold Pools? Open
Cold pools formed by precipitating convective clouds are an important source of mesoscale temperature variability. However, their sub‐mesoscale (100 m–10 km) structure has not been quantified, impeding validation of numerical models and un…
View article: Deforestation-Driven Increases in Shallow Clouds are Greatest in Drier, Low-Aerosol Regions of Southeast Asia
Deforestation-Driven Increases in Shallow Clouds are Greatest in Drier, Low-Aerosol Regions of Southeast Asia Open
Anthropogenic activity drives extensive tropical deforestation, particularly in Southeast Asia where 16% of total forest cover was lost between 2000 and 2020. While land surface changes significantly affect the atmosphere, their net impact…
View article: How Variable are Cold Pools?
How Variable are Cold Pools? Open
Cold pools formed by precipitating convective clouds are an important source of mesoscale temperature variability. However, their sub-mesoscale (100 m to 10 km) structure has not been studied, which impedes validation of numerical models a…
View article: Sub-mesoscale temperature variability in observed and simulated convective cold pools
Sub-mesoscale temperature variability in observed and simulated convective cold pools Open
The spatial and temporal variability of air temperature represents the imprint of various meteorological processes, ranging from microscale turbulence to synoptic-scale weather systems. Convective cold pools, formed by evaporatively cooled…
View article: Tropical Convection through the Lens of the INCUS Mission
Tropical Convection through the Lens of the INCUS Mission Open
The convective mass flux within tropical convection influences the large-scale circulation, drives cloud radiative forcing, has integral links to the production of fresh water, and impacts extreme weather. CMF forms the focus of the recent…
View article: The INCUS Mission
The INCUS Mission Open
<p>The INvestigation of Convective UpdraftS (INCUS) is a recently selected NASA Earth Ventures Mission. The overarching goal of INCUS is to enhance our understanding of why, when and where tropical convective storms form, and why onl…
View article: Observation strategy of the INCUS mission: retrieving vertical mass flux in convective storms from low-earth-orbit convoys of miniaturized microwave instruments
Observation strategy of the INCUS mission: retrieving vertical mass flux in convective storms from low-earth-orbit convoys of miniaturized microwave instruments Open
<p>Microwave radiometers and radars in low Earth orbit (LEO) are sensitive to the amount of condensed water in clouds. However, their temporal sampling is quite limited &#8211; a single LEO instrument will very rarely observe a w…
View article: C3LOUD-Ex: Raising the Curtain on Convection
C3LOUD-Ex: Raising the Curtain on Convection Open
T he interactions of updrafts and cold pools can play a pivotal role in determining convective storm characteristics.Convective updrafts are driven by latent heating, buoyancy, and vertical pressure gradients, and their velocities range fr…
View article: OUTLOOKS
OUTLOOKS Open
left to right) pose for a quick photo after rapidly setting up instruments ahead of an oncoming storm system."Later this year we are going back to the field to make measurements of the release of pollens, bacteria, and other bioaerosols wi…
View article: Cayman Islands Sea Turtle Nesting Population Increases Over 22 Years of Monitoring
Cayman Islands Sea Turtle Nesting Population Increases Over 22 Years of Monitoring Open
Given differing trajectories of sea turtle populations worldwide, there is a need to assess and report long-term population trends and determine which conservation strategies are effective. In this study, we report on sea turtle nest monit…
View article: Shear‐Parallel Tropical Convective Systems: Importance of Cold Pools and Wind Shear
Shear‐Parallel Tropical Convective Systems: Importance of Cold Pools and Wind Shear Open
The impact of cold pools on line‐orientated convective systems is assessed using idealized simulations of tropical oceanic convection under weak, moderate, and strong wind shear regimes. Cold pools are weakened by suppressing evaporation i…
View article: Cold Pool Responses to Changes in Soil Moisture
Cold Pool Responses to Changes in Soil Moisture Open
This study examines the role of soil moisture in modulating convective cold pool properties in an idealized modeling framework that uses a cloud‐resolving model coupled to an interactive land surface model. Five high‐resolution simulations…
View article: Environmental Controls on Tropical Sea Breeze Convection and Resulting Aerosol Redistribution
Environmental Controls on Tropical Sea Breeze Convection and Resulting Aerosol Redistribution Open
Sea breeze fronts propagate inland from the coastline, driving convective initiation and aerosol redistribution. Forecasting sea breezes is challenging due to uncertainties in the initial conditions, as well as the covariance and interacti…
View article: Dataset associated with "Cold pool responses to changes in soil moisture"
Dataset associated with "Cold pool responses to changes in soil moisture" Open
This study examines the role of soil moisture in modulating convective cold pool properties in an idealized modeling framework that uses a cloud-resolving model coupled to an interactive land surface model. Four high-resolution simulations…
View article: The Life Cycles of Ice Crystals Detrained From the Tops of Deep Convection
The Life Cycles of Ice Crystals Detrained From the Tops of Deep Convection Open
Extensive anvil cirrus clouds generated by deep convection have important impacts on the Earth's radiation budget and climate. We use growth‐sedimentation trajectory calculations to investigate the life cycles of anvil ice crystals as they…
View article: Cold Pool‐Land Surface Interactions in a Dry Continental Environment
Cold Pool‐Land Surface Interactions in a Dry Continental Environment Open
Cold pools influence convective initiation and organization, dust lofting, and boundary layer properties, but little is known about their interactions with the land surface, particularly in dry continental environments. In this study, two‐…
View article: The Role of Cold Pools in Tropical Oceanic Convective Systems
The Role of Cold Pools in Tropical Oceanic Convective Systems Open
The processes governing organized tropical convective systems are not completely understood despite their important influences on the tropical atmosphere and global circulation. In particular, cold pools are known to influence the structur…
View article: Cold pool processes in different environments
Cold pool processes in different environments Open
Cold pools are localized regions of dense air near Earth's surface. They form in association with precipitating clouds in many environments ranging from moist tropical to semi-arid continental conditions, and they play important roles in w…
View article: RAMS model simulation output for "Cold pool - land surface interactions in a dry continental environment"
RAMS model simulation output for "Cold pool - land surface interactions in a dry continental environment" Open
These data represent model output from simulations using the Regional Atmospheric Modeling System (RAMS). These data accompany the manuscript: Grant, L. D., & van den Heever, S. C. (2018): Cold pool - land surface interactions in a dry con…
View article: Cold pool dissipation
Cold pool dissipation Open
The mechanisms by which sensible heat fluxes (SHFs) alter cold pool characteristics and dissipation rates are investigated in this study using idealized two‐dimensional numerical simulations and an environment representative of daytime, dr…