Author: AOML Communications

Precipitation Processes and Vortex Alignment during the Intensification of a Weak Tropical Cyclone in Moderate Vertical Shear

Rogers, R. F., Reasor, P. D., Zawislak, J. A., & Nguyen, L. T. (2020). Precipitation Processes and Vortex Alignment during the Intensification of a Weak Tropical Cyclone in Moderate Vertical Shear. Monthly Weather Review, (2020).

Abstract:

The mechanisms underlying the development of a deep, aligned vortex, and the role of convection and vertical shear in this process, are explored by examining airborne Doppler radar and deep-layer dropsonde observations of the intensification of Hurricane Hermine (2016), a long-lived tropical depression that intensified to hurricane strength in the presence of moderate vertical wind shear. During Hermine’s intensification the low-level circulation appeared to shift toward locations of deep convection that occurred primarily downshear. Hermine began to steadily intensify once a compact low-level vortex developed within a region of deep convection in close proximity to a midlevel circulation, causing vorticity to amplify in the lower troposphere primarily through stretching and tilting from the deep convection…

Download PDF

Read Full Article

NOAA Celebrates 50 Years of Science, Service, and Stewardship

NOAA’s unique science mission benefits every American life every day in positive ways, including keeping Americans safer and contributing to greater US economic growth than ever before. In the next 50 years, NOAA will advance innovative research and technology, answer tough scientific questions, explore the unexplored, inspire new approaches to conservation, and continue its proud legacy of science, service, and stewardship.

Read Full Article

NOAA Premieres Strategies Focused on Emerging Science and Technology

At the 2020 international Ocean Sciences meeting, AOML microbiologist Kelly Goodwin helped NOAA unveil a new strategy for how the agency will dramatically expand its use of ‘Omics in the coming years. The ‘Omics strategy is one of four blueprints NOAA premiered that will guide transformative advancements in the quality and timeliness of its science, products, and services. 

Read Full Article

Women’s History Month: Ocean Acidification with Leticia Barbero

Dr. Leticia Barbero is a chemical oceanographer at NOAA’s Cooperative Institute for Marine and Atmospheric Studies at the University of Miami. In her role, she works with AOML to study the carbon dioxide system in the ocean, specifically ocean acidification in the coastal waters of the  U.S. East Coast and Gulf of America.

Read Full Article
Satellite image of Hurricane Micheal. Image Credit, NOAA.

Modeling Michael: Using NOAA’s HFV3 to predict rapid intensification in Hurricane Michael

In a recently published study, AOML hurricane researchers used multiple computer model forecasts to gain a better understanding of how Hurricane Michael, which made landfall in the panhandle of Florida with winds up to 162 mph, rapidly intensified despite strong upper-level wind shear which usually weakens hurricanes. By contrasting two sets of forecasts, the study found that Michael only rapidly intensified when rainfall completely surrounded Michael’s center, and when the eye of the storm itself was located in nearly the same place at different heights.

Read Full Article

Pods Away! New Autonomous Data Pods Will Provide Low-Cost, Reliable Data Retrieval

AOML is preparing to deploy two autonomous data pod systems with Pressure Inverted Echo Sounders near the eastern boundary of the North Atlantic during March 2020.  This will be the first full scale operational deployment of data pods, with a goal of providing a low-cost solution for the sustained Atlantic Meridional Overturning Circulation monitoring without the continuous use of a research vessel. 

Read Full Article
A photo shows a cloudy seascape and deep ocean waters. Photo Credit: NOAA AOML.

Out at Sea With Our Heads in the Clouds

AOML is deploying drifting buoys as part of a large multinational project that aims to improve our current understanding of the complicated interactions between the air and sea which create shallow convective clouds.  NOAA scientists are interested in studying shallow cloud and air-sea interactions because of their influence on global conditions from temperature and precipitation to more extreme weather events.

Read Full Article
A photo of coral gables waterway

Nutrients Entering Biscayne Bay: Tracking the Source with New Technology

AOML scientists are collaborating with partners from the Northern Gulf Institute of the University of Mississippi, and the University of Miami’s Cooperative Institute for Marine and Atmospheric Studies to tackle increasing nutrient levels throughout Biscayne Bay. A previous study detected the slow but steady eutrophication and warned of a regime shift towards murky algal dominated waters if better water quality management practices were not implemented.

Read Full Article