ANNUAL AND SEMI-ANNUAL VARIATIONS OF THE GPS-DERIVED PRECIPITABLE WATER VAPOR OVER SUMATRA ISLAND

Authors

  • Dudy D. Wijaya Institut Teknologi Bandung (ITB)
  • Nabila S.E. Putri Institut Teknologi Bandung (ITB)
  • Yan A. Rahmawan Badan Informasi Geospasial (BIG)
  • Sidik T. Wibowo Badan Informasi Geospasial (BIG)
  • Akhmad Y. Basuki Badan Informasi Geospasial (BIG)
  • Muhammad S. Fathulhuda Institut Teknologi Bandung (ITB)
  • Vera Sadarviana Institut Teknologi Bandung (ITB)

DOI:

https://doi.org/10.31172/jmg.v22i2.835

Keywords:

Precipitable water vapor, Rainfall, GPS, Ina-CORS

Abstract

We have utilized the Global Positioning System (GPS) data at 57 stations distributed over Sumatra Island to investigate spatio-temporal variations of the atmospheric precipitable water vapor (PWV). We focused on the annual and semi-annual cycles of the PWV. Our results show that Sumatra Island is divided into two distinct areas of annual and semi-annual cycles, where the boundary line between the areas is approximately at 2oS. While the annual cycle dominates the area over the southern side of 2oS, the semi-annual cycle is dominant over the northern side. Our results have further shown that the maximum phase of annual cycle occurs between January-March with considerably large amplitudes (10-15 mm). On the other side, the maximum phase of the semi-annual cycle in general occurs around November and May, whose amplitude is approximately between 1-5 mm. Our results are consistent with other results using rainfall data.

Author Biographies

Dudy D. Wijaya, Institut Teknologi Bandung (ITB)

Geodesy Research Group

Nabila S.E. Putri, Institut Teknologi Bandung (ITB)

Geodesy Research Group

Yan A. Rahmawan, Badan Informasi Geospasial (BIG)

Division for Horizontal Control Network and Geodynamics

Sidik T. Wibowo, Badan Informasi Geospasial (BIG)

Division for Horizontal Control Network and Geodynamics

Akhmad Y. Basuki, Badan Informasi Geospasial (BIG)

Division for Horizontal Control Network and Geodynamics

Muhammad S. Fathulhuda, Institut Teknologi Bandung (ITB)

Geodesy Research Group

Vera Sadarviana, Institut Teknologi Bandung (ITB)

Geodesy Research Group

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Published

2021-12-14

How to Cite

Wijaya, D. D., Putri, N. S., Rahmawan, Y. A., Wibowo, S. T., Basuki, A. Y., Fathulhuda, M. S., & Sadarviana, V. (2021). ANNUAL AND SEMI-ANNUAL VARIATIONS OF THE GPS-DERIVED PRECIPITABLE WATER VAPOR OVER SUMATRA ISLAND. Jurnal Meteorologi Dan Geofisika, 22(2), 75–79. https://doi.org/10.31172/jmg.v22i2.835

Issue

Vol. 22 No. 2 (2021)

Section

Article

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