Preliminary Results from Micrometeorological Observation in Sub-Urban Area of Tangerang, Indonesia
Ahmad Fadlan(1), I Dewa Gede A. Junnaedhi(2*), M. Rais Abdillah(2), Nurjanna Joko Trilaksono(2), Atsushi Inagaki(3), and Manabu Kanda(3)

1) Study Program of Meteorology, State College of Meteorology, Climatology and Geophysics (STMKG), Tangerang, Indonesia
2) Atmospheric Science Research Group, Faculty of Earth Sciences and Teknology, Institut Teknologi Bandung, Bandung, Indonesia
*dewa108[at]itb.ac.id
3) Department of Transdisciplinary Science and Engineering, Tokyo Institute of Technology, Tokyo, Japan

Abstract

In this paper, we are reporting the preliminary results of micrometeorological observation at sub-urban area of Tangerang, Banten, Indonesia. Tangerang is the buffer zone of the Jakarta megacity, hence rapidly developed in the past few years, following Jakarta^s rapid urbanization. Continues observation of micrometeorological conditions is necessary to track the impact of the progressive landscape change over the sub-urban area. The observation conducted at the rooftop of STMKG building at Tangerang is aimed to monitor the representative micrometeorological conditions in sub-urban area of Tangerang.The observation instruments consist of an ultrasonic anemometer, global radiation sensor, downward longwave radiation sensor, and an ambient temperature-humidity sensor. The total height of the anemometer is approximately 43 m above ground. All sensors were logged at a fast speed of 10 Hz and the data is collected manually for 8 days period, from 20 March until 28 March 2024. The mean values of each parameter were calculated every 30 minutes, and the turbulent fluxes were estimated using eddy covariance (EC) method.The results show that the prevailing wind at the site is influenced by sea and land breeze circulation. The site also has a relatively low drag coefficient from all directions, except for the northeast sector. The heat flux estimation shows an agreement with the observed radiation change. The turbulence statistic shows that the site is quite representative for micrometeorological monitoring for the sub-urban area of Tangerang. The observation will be continued, and the results will be used to study the dynamic of micrometeorological conditions in Tangerang.

Keywords: turbulent flux, micrometeorology, sub-urban, Tangerang

Topic: Atmospheric Sciences