Sains Malaysiana 38(4)(2009): 463–471 

 

Pemantauan dan Pencirian Cuaca-Angkasa di Kawasan UKM Bangi, Selangor Menggunakan Penerima GPS

(Monitoring and Characterization of Space Weather Over UKM Bangi, Selangor using GPS Receivers)

 

Wayan Suparta 1,*, Baharudin Yatim1& Mohd. Alauddin Mohd. Ali2

1Institut Sains Angkasa (ANGKASA) Universiti Kebangsaan Malaysia

43600 UKM, Bangi, Selangor D.E., Malaysia

2Jabatan Kejuruteraan Elektrik, Elektronik dan Sistem

Fakulti Kejuruteraan & Alam Bina, Universiti Kebangsaan Malaysia

43600 UKM, Bangi, Selangor D.E., Malaysia

 

Received: 2 May 2008 / Accepted: 22 December 2008

 

ABSTRAK

 

Kajian ini dijalankan untuk mencirikan kepelbagaian kelakuan cuaca dalam lapisan bawah dan atas atmosfera,  terutama kebergantungannya kepada keadaan di dalam troposfera dan ionosfera pada enam stesen yang berbeza di UKM Bangi, Selangor. Pengukuran adalah berasaskan pemonitoran jangka pendek wap air bolehmendak (PWV) dalam troposfera dan jumlah kandungan elektron (TEC) dalam ionosfera menggunakan penerima GPS Bumi. Data PWV, TEC dan pengukuran meteorologi permukaan adalah dicerap bermula 12 November sehingga 7 Disember 2007. Hasil pemonitoran menunjukkan bahawa kedua-dua profil kebolehubahan PWV dan TEC memperlihatkan kitaran harian. Purata harian PWV dan TEC adalah tinggi, masing-masing dengan nilai ~42 mm dan ~35 TECU. Perubahan kedua-duanya didapati dipengaruhi aktiviti Matahari.

 

Kata kunci: Atmosfera; GPS PWVTEC; ionosfera; UKM Bangi

 

ABSTRACT

 

This research was performed to characterize the variability of weather behavior in the lower and upper atmosphere layers, particularly its dependence on conditions in the troposphere and ionosphere at six different stations over UKM Bangi, Selangor. The measurements are based on short-term monitoring of precipitable water vapour (PWV) in the troposphere and total electron content (TEC) in the ionosphere using ground-based GPS receivers. Data on PWV, TEC and surface meteorological measurements were gathered from 12 November to 7 December 2007. Monitoring Results showed that both profiles of PWV and TEC variations shown diurnal cycle. The PWV and TEC on daily mean generally high, with a value of ~42 mm and ~35 TECU, respectively. It was found that both PWV and TEC variations exhibits influenced by solar activity.

 

Keywords: Atmosphere; GPS PWVTEC; ionosphere; UKM Bangi  

 

REFERENCES

 

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  *Corresponding author; email: wayan@ukm.my

 

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