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Articles 1 - 17 of 17
Full-Text Articles in Physical Sciences and Mathematics
Temporally Consistent Urban-Rural Delineations For Global Urban Heat Island Monitoring, Tc Chakraborty
Temporally Consistent Urban-Rural Delineations For Global Urban Heat Island Monitoring, Tc Chakraborty
Yale Day of Data
Urbanization leads to local-scale modification of climate, particularly the urban heat island (UHI) effect - the high temperature in cities compared to their surroundings. The UHI effect is generally quantified by measuring the temperature differential between the city and its surrounding rural reference. Choices of both the city and the rural reference are prone to assumptions, which may affect, among other things, temporal variability in UHI intensity. To reduce these uncertainties, I create a global dataset of urban-rural delineations that can be used to better constrain the temporal trends in UHI intensity throughout the globe using the European Space Agency's …
Ocean Waves Workshop 2019 Session 4 Notes, Kaus Raghukumar, Sam Mcwilliams
Ocean Waves Workshop 2019 Session 4 Notes, Kaus Raghukumar, Sam Mcwilliams
Ocean Waves Workshop
No abstract provided.
Deficiencies In The Physics Of Existing Operational Wave And Surge Models, D. T. Resio
Deficiencies In The Physics Of Existing Operational Wave And Surge Models, D. T. Resio
Ocean Waves Workshop
No abstract provided.
A New Real-Time Ocean Observing Station On Ship Shoal On Louisiana Shelf, Chunyan Li, Peter Luo, Brian Milan, Wei Huang
A New Real-Time Ocean Observing Station On Ship Shoal On Louisiana Shelf, Chunyan Li, Peter Luo, Brian Milan, Wei Huang
Ocean Waves Workshop
One of the major challenges that we are facing in the northern Gulf of Mexico coastal area is the need of a better and reliable offshore met-ocean real time data collection system that supports the mission of Bureau of Ocean Energy Management (BOEM) and other federal and local agencies for coastal management, protection, and restoration, especially along the Louisiana coast. This area has a suite of environmental problems that require the acquisition of real time data for immediate assessment or model-based assessment and predictions that rely on this kind of data. One such system providing this kind of data is …
Ocean Waves Workshop 2019 Session 3 Notes, Kaus Raghukumar, Sam Mcwilliams
Ocean Waves Workshop 2019 Session 3 Notes, Kaus Raghukumar, Sam Mcwilliams
Ocean Waves Workshop
No abstract provided.
Update In Us Navy Global Wave Model Forecasting, J. D. Dykes, W. E. Rogers, D. Wang
Update In Us Navy Global Wave Model Forecasting, J. D. Dykes, W. E. Rogers, D. Wang
Ocean Waves Workshop
No abstract provided.
Ocean Waves Workshop 2019 Session 2 Notes, Kaus Raghukumar, Sam Mcwilliams
Ocean Waves Workshop 2019 Session 2 Notes, Kaus Raghukumar, Sam Mcwilliams
Ocean Waves Workshop
No abstract provided.
Directional Spectrum Measurements By The Spotter: A New Developed Wave Buoy, Kaus Raghukumar, Grace Chang, Frank Spada, Tim Jannsen
Directional Spectrum Measurements By The Spotter: A New Developed Wave Buoy, Kaus Raghukumar, Grace Chang, Frank Spada, Tim Jannsen
Ocean Waves Workshop
The Spotter is an accurate, low-cost, easily deployable and robust solar powered wave buoy recently developed by Sofar Technologies (formerly Spoondrift). Spotter reduces costs and complexity of surface wave and current measurements, which can be useful for academic, military, and commercial research into surface wave and wave-driven dynamics. We performed a series of validation tests and research experiments with the Spoondrift Spotter. The low-cost and compact Spotter makes it easy to deploy arrays of wave buoys which was previously not feasible (or cost prohibitive) with traditional wave buoys. A well-designed array can provide a direct measurement of the directional wave …
Ocean Waves Workshop 2019 Session 1 Notes, Kaus Raghukumar, Sam Mcwilliams
Ocean Waves Workshop 2019 Session 1 Notes, Kaus Raghukumar, Sam Mcwilliams
Ocean Waves Workshop
No abstract provided.
Innovations In Metocean Sensors, Pieter Smit, T. T. Janssen
Innovations In Metocean Sensors, Pieter Smit, T. T. Janssen
Ocean Waves Workshop
Real-time observations are critical to understand, predict and estimate the impact of extreme weather events such as extratropical hurricanes and storms. Remote sensing, moored wave buoys and advances in predictive models have greatly advanced understanding and predictive capability of extreme ocean weather. However, due to cost and complexity of traditional moored buoys, in-situ networks are typically sparse and often close to shore and not well suited to drive predictive models over meaningful geophysical scales. Here we will discuss ongoing efforts to extend the capability of the Sofar Spotter to measure marine boundary layer dynamics. With the advancement to more portable …
Latent Storm Factors And Their Indicators, Joy D'Andrea
Latent Storm Factors And Their Indicators, Joy D'Andrea
Annual Symposium on Biomathematics and Ecology Education and Research
No abstract provided.
Application Of The Optimal Estimation Method (Oem) To Retrieve Relative Humidity From Raman Lidar Backscatter Measurements., Shayamila N. Mahagammulla Gamage, Robert Sica, Alexander Haefele
Application Of The Optimal Estimation Method (Oem) To Retrieve Relative Humidity From Raman Lidar Backscatter Measurements., Shayamila N. Mahagammulla Gamage, Robert Sica, Alexander Haefele
Western Research Forum
Accurate measurements of relative humidity (RH) vertical profiles in the atmosphere is important for understanding the earth's weather and the climate system. RH represent the current state of the water vapor in the atmosphere with respect to the ambient air related to saturation. Even minor changes of the RH in the lower atmosphere has a large impact of the global circulation and cloud formation. Due to its high variability RH measurements in the lower atmosphere is significantly challenging. Raman lidar is one of the potential tools that can provide vertical profiles of RH. Typically, temperature and water vapor mixing ratios …
Integrated Raman Lidar And Microwave Radiometer Retrieval Of Atmospheric Water Vapor, Jeffrey Vankerkhove, Robert Sica, Alexander Haefele
Integrated Raman Lidar And Microwave Radiometer Retrieval Of Atmospheric Water Vapor, Jeffrey Vankerkhove, Robert Sica, Alexander Haefele
Western Research Forum
Water vapor plays a critically important role in many atmospheric processes. However, it is poorly characterized throughout much of the atmosphere, particularly in the UTLS (Upper Troposphere Lower Stratosphere) region, due to lack of accurate measurements. Raman lidar boasts the capacity for excellent spatial and temporal resolution, but requires an external calibration. Microwave radiometers can be calibrated in absolute terms, but have poor height resolution. In this study, we introduce an integrated water vapor retrieval using an optimal estimation method, where the measurements from the Raman Lidar for Meteorological Observation (RALMO) and a RPG-HATPRO radiometer, both located at the MeteoSwiss …
Using Remote Sensing And Gis Techniques Combined With Weather And Climate Data To Create A Deeper Understanding The Wildfire Campfire In California, Lucas Farmer
Student Symposium
Wildfires have devastated the West Coast time and time again. This project takes on multiple approaches to help understand different aspects of these fires, focusing on the wildfire Campfire. The Campfire started and ended in November of 2018 in Butte County California. The first portion of the project focuses on the weather and climate of this region in California. By understanding the weather and climate of a particular area and the time at which a wildfire starts you can start to identify optimal conditions where a fire could potentially breakout. Local weather data will be gathered to look at temperature, …
Movement Of Lifetime Maximum Intensity Locations During The North Atlantic Hurricane Season, Morgan Steckler
Movement Of Lifetime Maximum Intensity Locations During The North Atlantic Hurricane Season, Morgan Steckler
EURēCA: Exhibition of Undergraduate Research and Creative Achievement
Where a storm reaches its lifetime maximum intensity (LMI) can be a powerful indicator of tropical cyclone intensification patterns. Any changes in this location may demonstrate how hurricanes are affected by climate change. Studies on the annual and decadal trends in LMI location have shown that the latitude where storms are reaching their LMI is shifting, but at different rates and in different directions depending on the ocean basin. In the North Atlantic, for example, LMI location seems to be moving slightly closer to the equator, especially for those storms with the greatest intensities. LMI location patterns have yet to …
Monitoring Lesser Known Harmful Algal Blooms On The Oregon Coast, Taylor Dodrill, Tawnya D. Peterson, Matthew Hunter, Micah Rogers
Monitoring Lesser Known Harmful Algal Blooms On The Oregon Coast, Taylor Dodrill, Tawnya D. Peterson, Matthew Hunter, Micah Rogers
OHSU-PSU School of Public Health Annual Conference
Ocean warming has expanded the niche of harmful algal blooms (HABs), including HABs previously believed to pose little risk of shellfish contamination in the Pacific Northwest. Monitoring efforts in Washington and California have demonstrated that Dinophysis spp. is a HAB of emerging concern and has been linked to diarrhetic shellfish poisoning events. However, quantitative monitoring for Dinophysis spp. on the Oregon Coast has been limited. This analysis provides a preliminary characterization of risk that Dinophysis spp. poses to shellfish consumers in Oregon. Furthermore, we assess the predator-prey interaction between Dinophysis spp. and its prey, Mesodinium rubrum, to determine whether …
A Global Database Of Surface Urban Heat Island Intensity, Tc Chakraborty, Xuhui Lee
A Global Database Of Surface Urban Heat Island Intensity, Tc Chakraborty, Xuhui Lee
Yale Day of Data
The urban heat island (UHI) effect - the phenomenon of higher temperatures in urban environments - is one of the most well-known consequences of urbanization on local climate. We develop the simplified urban-extent (SUE) algorithm, a new algorithm to estimate the urban heat island (UHI) intensity at a global scale. This algorithm is implemented on the Google Earth Engine platform and uses satellite-derived images to calculate the surface UHI intensity for over 9500 urban clusters covering 15 years, making this the most comprehensive global UHI database. The data are validated against previous multi-city studies and then used to estimate the …