Abstract
Aim:This study aimed to investigate the impact of using Global Positioning System Radio Occultation (GPS RO) sounding data (i.e., Constellation Observing System for Meteorology, Ionosphere, and Climate; COSMIC) for Tropical Cyclogenesis (TC-genesis) research.Methods:The Weather Research and Forecasting (WRF-ARW) model and the WRF data assimilation system (i.e., WRF 3DVAR) were employed to simulate Tropical Depression- 8 (TD8) 2006. A noteworthy feature about TD8-genesis was that Saharan dust outbreak was also observed during this period, which made this event more sophisticated. The time frame to be focused on was from 1200 UTC September 09 to 1200 UTC September 12, 2006. The level 2 wetPrf COSMIC data was adopted in this research. A 72-hour integration wasperformed with initial and time-dependent lateral boundary conditions derived from the NCEP final analysis data (FNL). A 2-domain nested simulation was configured with 30 km, and10 km horizontal resolutions, respectively.Results:Simulation results from all the experiments performed with different RO soundings combination showed that the RO sounding 8 has the greatest significant impact on TD8 simulation.Conclusion:Elevation, time, and location are the parameters that made RO sounding 8 the most treasured sounding to analyze TD8.
Highlights
The Constellation Observing System for Meteorology, Ionosphere, and Climate (COSMIC) mission was created to improve atmospheric sounding from space
Aim: This study aimed to investigate the impact of using Global Positioning System Radio Occultation (GPS RO) sounding data (i.e., Constellation Observing System for Meteorology, Ionosphere, and Climate; COSMIC) for Tropical Cyclogenesis (TC-genesis) research
The simulated Sea Level Pressure (SLP) from the COSMIC-All experiment (Fig. 3) shows that the location is more consistent with the Meteo-France Rapid Developing Thunderstorm (RDT) Product Analysis and the low-pressure center of CTRL at 1200 UTC September 12 was near 13.5°N, and 19.0°W
Summary
The Constellation Observing System for Meteorology, Ionosphere, and Climate (COSMIC) mission was created to improve atmospheric sounding from space. Six microsatellites were launched on April 15, 2006, at an altitude of 512 km (actual altitude 800km). All of these satellites produce approximately 2,500 soundings every day. The data obtained is regarding water vapor, ionosphere vertical profiles, climate, global forecast, and tropospheric moisture and temperature [1 - 3]. These microsatellites were designed to provide data using the Global Positioning System (GPS) Radio Occultation RO Technique [4 - 6]
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