Abstract. The Organization of Tropical East Pacific Convection (OTREC) field campaign investigated the dynamical structure of convection in the tropical east Pacific and Caribbean. One of the central data sets for this field campaign is the thermodynamic structure of the atmosphere measured by dropsondes released from the NSF/NCAR G-V research aircraft. Between 7 August and 2 October 2019, 648 dropsondes were successfully released from 22 research flights. Soundings were launched in a grid pattern with a typical spacing of 1∘ longitude and 1.2∘ latitude and provided profiles of pressure, temperature, humidity, and winds between the surface and on average 13.3 km. Of these soundings, 636 provided complete vertical profiles of all parameters with a nominal vertical resolution between 6 to 12 m from the surface to almost flight altitude. OTREC deployed the new NRD41 dropsonde, which is the most advanced model that has been developed at NCAR. Here, we describe the data set, the processing of the measurements, and general statistics of all dropsonde observations. The data set is available at https://doi.org/10.26023/EHRT-TN96-9W04 (UCAR/NCAR and Vömel, 2019).
This paper presents the design, construction, testing, and results of the project assigned to the 2014 NASA Langley Research Center Aeronautics Academy. The Academy was tasked with delivering one Unmanned Aerial System (UAS) capable of performing both Search and Rescue (SAR) and Precision Agriculture (PA) missions. The aircraft was constructed using primarily Commercial off-the-Shelf (COTS) electronics and flight hardware housed in a custom-fabricated airframe. The UAS, named TIGRESS (Technology in Ground Rescue and Environmental Stress Sensing) is capable of long-endurance autonomous flight, live video streaming, autonomous detections of persons, creation of Normalized Density Vegetation Index (NDVI) maps, and has completed four successful flights. The results of the flight tests, the design, and the construction methods are presented. Additionally, recommendations for further tests are presented.
Abstract. The Organization of Tropical East Pacific Convection (OTREC) field campaign investigated the dynamical structure of convection in the tropical east Pacific and Caribbean. One of central data sets for this field campaign is the thermodynamic structure of the atmosphere measured by dropsondes released from the NSF/NCAR G V research aircraft. Between 7 August and 2 October 2019, 648 dropsonde were successfully released from twenty-two research flights. Soundings were launched in a grid pattern with a typical spacing of 1° longitude and 1.2° latitude and provide profiles of pressure, temperature, humidity, and winds between the surface and on average 13.3 km. Of these soundings, 636 provided complete vertical profiles of all parameters with a nominal vertical resolution between 6 to 12 m from the surface to almost flight altitude. OTREC deployed the new NRD41 dropsonde, which is the most advanced model that has been developed at NCAR. Here, we describe the data set, the processing of the measurements, and general statistics of all dropsonde observations. The dataset is available at https://doi.org/10.26023/EHRT-TN96-9W04 (UCAR/NCAR, 2019).
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