4:30 PM - 4:45 PM
[MTT38-04] Development of Fine Meteorological Measurement System Using Secondary Surveillance Radar for Air Traffic Control
Keywords:meteolorogical measurement, airborne, secondary surveillance radar, extreme weather phenomena, fine spatiotemporal resolution
Extreme weather phenomena have been increasing due to global climate change. Among them, local phenomena like linear precipitation zones and tornadoes are difficult to predict. One of the exacerbating factors is the lack of observational coverage and spatiotemporal resolution of the current measurement techniques, such as weather radars and radiosondes. To complement these instruments, we have been developing a novel meteorological measurement technique using air traffic control protocol for commercial aircraft. The method is based on airborne digital radio communication protocols for air traffic control named Secondary Surveillance Radar (SSR) Mode S and Automatic Dependent Surveillance-Broadcast (ADS-B). They are relatively new protocols that started in 2007 and are now widely used in many commercial flights. The communication via SSR Mode S and ADS-B includes information about the position, direction, speed, and attitude of aircraft, which are computed from measurements of their surrounding atmosphere. Hence, they can be regarded as in-situ measurements of the atmosphere like those obtained by Radiosondes. We can then reconstruct atmospheric parameters such as wind speed/direction and temperature by receiving these signals at ground stations to achieve a wider coverage area and higher spatiotemporal resolution than existing observation methods.
We implemented the abovementioned technique as an integrated meteorological observation system called atc2met (Air-Traffic-Control to METeorological data) that covers measurement, data processing, and data publication. The receiver comprises a small, cheap, single-board computer and a digital television receiver dongle. A central server collects raw data from receivers and generates a dataset for immediate publication. A schematic diagram of the whole atc2met system is displayed below. This atc2met system aims to be a complementary data source for radiosonde observations and the existing AMDAR (Aircraft Meteorological Data Relay) system by WMO. We currently have three sites each in Japan and Indonesia, and their data is published here: https://atc2met.nipr.ac.jp/
In this presentation, we briefly overview the development status of our system and compare the wind height profiles between one of our sites and the MU radar at Shigaraki MU observatory, Japan, to evaluate the accuracy and performance of the atc2met system.
We implemented the abovementioned technique as an integrated meteorological observation system called atc2met (Air-Traffic-Control to METeorological data) that covers measurement, data processing, and data publication. The receiver comprises a small, cheap, single-board computer and a digital television receiver dongle. A central server collects raw data from receivers and generates a dataset for immediate publication. A schematic diagram of the whole atc2met system is displayed below. This atc2met system aims to be a complementary data source for radiosonde observations and the existing AMDAR (Aircraft Meteorological Data Relay) system by WMO. We currently have three sites each in Japan and Indonesia, and their data is published here: https://atc2met.nipr.ac.jp/
In this presentation, we briefly overview the development status of our system and compare the wind height profiles between one of our sites and the MU radar at Shigaraki MU observatory, Japan, to evaluate the accuracy and performance of the atc2met system.