On September 5th, NASA’s Global Hawk took off from Wallops Island, Virginia to fly a 24 hour mission over Tropical Storm Fred. The Global Hawk launched dropsondes to measure the wind structure of the storm and gathered other meteorological data such as temperature and moisture with instruments on board. The Global Hawk is part of NOAA’s Sensing Hazards with Operational Unmanned Technology (SHOUT) field campaign.
AOML is partnering with Woods Hole Oceanographic Institution in their effort to deploy eight more Air-Launched Autonomous Micro Observer (ALAMO) floats in the path of Tropical Storm Erika. ALAMO profiling floats will be air-deployed through a chute in the belly of a US Air Force C-130 airplane. ALAMOs are a smaller Argo-style floats that will make 11 profile per day of the upper ocean down to 300m. They communicate via satellite and AOML will receive and conduct data processing to upload ocean temperature data onto the Global Telecommunication System so that it can be incorporated into ocean models. The ALAMO floats are manufactured by MRV Systems.
Photos taken from NOAA’s P-3 aircraft during Hurricane Hunter flights conducted on Saturday, August 22nd and Sunday, August 23rd inside Hurricane Danny. Peaking at Category 3 strength on Friday, August 21, Danny had maximum sustained winds of 115 mph as it churned in the Atlantic. Danny then weakened to a tropical depression due to interaction with high levels of wind shear and a mass of dry air in the Caribbean as it moved across the Lesser Antilles. The Hurricane Hunter missions profiled Danny’s wind structure with Tail Doppler Radar, conducted various projects in support of the Hurricane Research Division’s 2015 Field Program, and surveyed the ocean ahead of the storm in order to improve forecasts.
With the 2015 Atlantic hurricane season underway, researchers are pointing to the strong presence of El Niño as the major driver suppressing the development of tropical cyclones in the Atlantic basin. But what specific conditions are associated with El Niño that lead to a less than ideal environment for tropical cyclone development? Through research and observation, hurricane researchers know strong environmental wind shear is a major factor affecting potential hurricane development and growth. This hurricane season, AOML researchers are delving further into the relationship between wind shear and tropical cyclones.
This hurricane season, NOAA’s Office of Oceanic and Atmospheric Research will work with NOAA’s National Weather Service to upgrade weather forecast models and conduct research with unmanned air and water craft to improve forecasts of hurricane track and intensity.A highlight this season is the upgrade of the operational Hurricane Weather Research and Forecast system (HWRF), an advanced hurricane prediction model. This year’s version now has increased the resolution from 3 to 2 kilometers, and will use tail Doppler radar data collected from the NOAA P-3 and G-IV hurricane hunter aircraft to improve the storm representation within the model.
AOML’s hurricane researchers conducted a number of field activities in August that provided data and critical insights into two Atlantic tropical cyclones, Danny and Erika. The two storms enabled researchers to test new instruments in support of the 2015 Hurricane Field Program and conduct research that will benefit future forecasts. Among the highlights were more than 15 successful manned and unmanned aircraft missions into Danny and Erika to collect and provide real-time data to the National Hurricane Center (NHC), as well as evaluate forecast models.
Congratulations to the Hurricane Research Division and the Hurricane Weather Research & Forecast System modeling team for receiving DOC Gold Medal and aiding in the advancement of hurricane intensity prediction.
The Atlantic hurricane season will officially end November 30, and will be remembered as a relatively quiet season as was predicted. Still, the season afforded NOAA scientists with opportunities to produce new forecast products, showcase successful modeling advancements, and conduct research to benefit future forecasts.
Photos taken from a NOAA P-3 aircraft during a Hurricane Hunter flight inside Hurricane Edouard. NOAA successfully deployed a Coyote Unmanned Aircraft System (UAS) directly into a hurricane from a NOAA P-3 Hurricane Hunter for the first time. During flights conducted September 15-17, 2014 out of Bermuda, scientists aboard the P-3 aircraft received meteorological data from the Coyote UAS in both the eye and surrounding eyewall of Hurricane Edouard.
