METEOROLOGICAL FACTORS AFFECTING DIURNAL VARIATIONS OF SOIL MOISTURE (CASE STUDY: PANCAWATI CARINGIN DISTRICT, BOGOR)
Geraldin Andira Cahyarani Putri (a*), Dr. Rusmawan Suwarman, S.Si., M.T. (b), Teuku Reza, M.T. (c)

Meteorology, Bandung Institut of Technology
Jalan Ganesha 10, Bandung 40132, Indonesia
*12820032[at]mahasiswa.itb.ac.id

Abstract

Soil moisture is influenced by meteorological factors, such as rainfall, air
temperature, relative humidity, and solar radiation, each of which has an influence
on different soil depths. This research examines the characteristics of soil moisture
at various depths and its controlling factors based on available data in the
mountains of Bogor.
This research method is based on correlation analysis and diurnal variation of
controlling factors (rainfall, solar radiation, relative humidity, and air
temperature) and their correlation at soil depths of 25 cm, 50 cm, 75 cm, and 100
cm.
The analysis results show that soil moisture fluctuations are influenced by air
temperature, solar radiation, rainfall and relative humidity. The controlling factor
that most influences diurnal variations at depths of 25 cm, 50 cm, 75 cm and 100
cm, namely variables at the same two hours times in the top layer. Lag correlation
analysis shows that controlling factors directly influence soil moisture at all
depths.

Keywords: soil moisture, meteorological factors, diurnal variation

Topic: Atmospheric Sciences