Browsing Atmospheric sciences by Title
Now showing items 261-280 of 312
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The Aerosol Direct Radiative Effect at the ARM SGP and TWP Sites
The clear-sky aerosol direct radiative effect was estimated at the Atmospheric Radiation Measurement (ARM) Southern Great Plains (SGP) site in Lamont, Oklahoma and Tropical Western Pacific (TWP) site in Darwin, Australia. ... -
The Diablo Winds off Northern and Central California: Climatology and Synoptic Evolution
Strong, dry downslope-directed ow over northern and central California known have played a critical role in a number of regional wildres. Termed diablo winds, these winds are more frequent over the Bay area than along the ... -
The Diurnal Cycle of Clouds and Precipitation at the ARM SGP Site
Millimeter Wavelength Cloud Radar (MMCR) data from Dec. 1996 to Dec. 2010, collected at the U. S. Department of Energy (DOE) Atmospheric Radiation Measurement (ARM) program Southern Great Plains (SGP) site are used to ... -
The effect of ENSO on Arctic sea ice as a source of predictability
ENSO is the primary mode of global climate variability but its links to Arctic sea ice are uncertain, in part due to the short observational record. The Community Earth System Model is used to constrain the effect of ENSO ... -
The Effect of Hydrometeors on MSU/AMSU Temperature Observations over the Tropical Ocean
The temperature of Earth’s atmosphere has been monitored continuously since late 1978 by the Microwave Sounding Unit (MSU) and the Advanced Microwave Sounding Unit (AMSU) flown on polar-orbiting weather satellites. It is ... -
The Effect of Orbital Forcing on the MJO’s Amplitude and Phase Speed
The Madden-Julian Oscillation (MJO) has a pronounced seasonal cycle, drifting from the Southern Hemisphere in boreal winter to the Northern Hemisphere in boreal summer, with a maximum intensity during boreal winter in the ... -
The Enhancement of Precipitation due to Mesoscale Convective Organization
In the tropics, extreme precipitation events are often caused by mesoscale systems of organized, spatially clustered deep cumulonimbi, posing a substantial risk to life and property. While the clustering of convective ... -
The Impact of Tropical Teleconnections on Antarctic Sea Ice and Climate
The role of tropical teleconnections on Antarctic sea ice and climate is investigated. Teleconnections are generated in a fully coupled and a slab ocean simulation. We find that both experiments are able to replicate the ... -
The Influence of an Orographic Feature on an Idealized Mid-Latitude Cyclone
The interaction of a mid-latitude cyclone with an isolated north-south mountain barrier is examined using idealized numerical simulation. A prototypical cyclone develops from an isolated disturbance in a baroclinically ... -
The Life Cycle and Net Radiative Effect of Extended Anvil Clouds
We hypothesize that the neutral top-of-atmosphere net radiative effect (NCRE) of convective clouds in the deep tropics results in large measure from the life cycle of anvil clouds, starting as thick and highly reflective ... -
The Life Cycle of TTL Cirrus: A Model Evaluation using the DYAMOND Simulations
Thin cirrus in the tropics are important for climate because of their warming effect on the atmosphere and large spatiotemporal extent, coinciding with locations of deep convection. Tropical cirrus are difficult to observe ... -
The Microphysical Structure of Mesoscale Convective Systems
Mesoscale convective systems (MCSs) are large, long-duration complexes of clouds that are composed of a mixture of convective and stratiform components united by a mesoscale circulation. By developing an innovative spatial ... -
The Origin of Soil Moisture Evaporation "Regimes"
Evaporation plays an extremely important role in determining summertime surface temperature and surface temperature variability over land. Observations show the relationship between evaporation and soil moisture generally ... -
The pattern effect and its implications for climate sensitivity
Radiative feedbacks depend on the spatial pattern of sea-surface temperatures (SSTs) and thus can change over time as SST patterns evolve – the so-called pattern effect. The radiative feedbacks within atmospheric general ... -
The Promise of Sea Ice Thickness: A Data Assimilation Application for Modern Arctic Climate
The significant role of sea ice in local and global climate and human-environment interactions in a rapidly changing world, necessitates a solid understanding of its recent and future states. Future Arctic sea ice extent ... -
The QBO Dynamics and Gravity Waves Characteristics as Seen in ERA5 Reanalysis
The quasi-biennial oscillation (QBO) is the primary mode of interannual variability in the tropical stratosphere. It is characterized by the downward propagation of successive westerly and easterly wind regimes with an ... -
The Regional Meteorology of California Wildfire Emissions
Large, damaging, and costly wildfires associated with unusually strong, dry winds have occurred in California recently and through its history. This thesis examines the relationship between daily wildfire emissions and the ... -
The response of sea ice and climate to non-CO2 forcing
The climate system response to forcing presents an opportunity to learn about the system and has important implications for the climate we experience. Large volcanic eruptions are an example of a phenomenon other than ... -
The role of midlatitude cyclones in the emission, transport, production, and removal of aerosols in the Northern Hemisphere
We examine the distribution of aerosol optical depth (AOD) across 27,707 northern hemisphere (NH) midlatitude cyclones for 2005-2018 using retrievals from the Moderate Resolution Spectroradiometer (MODIS) sensors and ... -
The Role of the Atmosphere in Marine Heatwaves
Marine heatwaves (MHWs) are events of abnormally warm sea surface temperatures (SSTs) that last for an extended period of time. MHWs have devastating impacts on marine ecosystems and coastal economies, and thus there is ...