Karl had maximum sustained winds of 115 mph when it made landfall on Friday afternoon, Sept. 17. That made Karl a Category three hurricane on the Saffir-Simpson scale, and a major hurricane to boot.
On that day, NASA's Genesis and Rapid Intensification Processes (GRIP) aircraft were flying over Karl and taking readings of the storm's winds, temperature, pressure and more. The DC-8 aircraft was one of the planes that flew into Karl at an altitude of 37,000 feet on the afternoon of Friday, Sept. 17, about 3 hours after Hurricane Karl made landfall in Mexico. The DC-8 aircraft took off from its base in Fort Lauderdale, Fla. All nine instruments installed on the DC-8 collected data during its flight over the storm system, and dropsondes were launched successfully to aid the other instruments in gauging wind profiles and moisture content.Meanwhile, NASA's WB-57 took off from its base in Houston, Texas and joined the DC-8 for flights over Hurricane Karl in mid-afternoon on Sept. 17. The WB-57 flew higher than the DC-8 aircraft, at an altitude between 56,000 and 58.000 feet. The WB-57 has two instruments aboard to study tropical cyclones: the Advanced Microwave Precipitation Radiometer (AMPR) and the HIRAD (Hurricane Imaging Radiometer). AMPR studies rain cloud systems, but are also useful to studies of various ocean and land surface processes. The HIRAD measures strong ocean surface winds through heavy rain, providing information on both rain rate and wind speed.
Karl's heavy rainfall was responsible for inland flooding and evacuations. Reports indicated that almost half a million people were without electricity, and over 20,000 homes were damaged or flooded. Over 40,000 people were evacuated from the municipalities of Jamapa, La Antigua, Medellin de Bravo, Cotaxtla and Actopanm. Reports indicated eight people missing and seven dead from Karl's rampage.
By Saturday morning, Sept. 18, Karl's maximum sustained winds were down to 25 mph. By Sunday, Sept. 19, the National Hurricane Center in Miami, Fla. proclaimed that Karl had dissipated over inland Mexico.
Rob Gutro | EurekAlert!
Wandering greenhouse gas
16.03.2018 | Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung
Unique Insights into the Antarctic Ice Shelf System
14.03.2018 | Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung
Animal photoreceptors capture light with photopigments. Researchers from the University of Göttingen have now discovered that these photopigments fulfill an...
On 15 March, the AWI research aeroplane Polar 5 will depart for Greenland. Concentrating on the furthest northeast region of the island, an international team...
The world’s second-largest ice shelf was the destination for a Polarstern expedition that ended in Punta Arenas, Chile on 14th March 2018. Oceanographers from...
At the 2018 ILA Berlin Air Show from April 25–29, the Fraunhofer Institute for Laser Technology ILT is showcasing extreme high-speed Laser Material Deposition (EHLA): A video documents how for metal components that are highly loaded, EHLA has already proved itself as an alternative to hard chrome plating, which is now allowed only under special conditions.
When the EU restricted the use of hexavalent chromium compounds to special applications requiring authorization, the move prompted a rethink in the surface...
At the ILA Berlin, hall 4, booth 202, Fraunhofer FHR will present two radar sensors for navigation support of drones. The sensors are valuable components in the implementation of autonomous flying drones: they function as obstacle detectors to prevent collisions. Radar sensors also operate reliably in restricted visibility, e.g. in foggy or dusty conditions. Due to their ability to measure distances with high precision, the radar sensors can also be used as altimeters when other sources of information such as barometers or GPS are not available or cannot operate optimally.
Drones play an increasingly important role in the area of logistics and services. Well-known logistic companies place great hope in these compact, aerial...
16.03.2018 | Event News
13.03.2018 | Event News
08.03.2018 | Event News
16.03.2018 | Earth Sciences
16.03.2018 | Physics and Astronomy
16.03.2018 | Life Sciences