Wavelet analysis of 14 years' aerosol lidar observations over Pune, India

Panuganti China Sattilingam Devara, Sandip Pal

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Over 700 weekly spaced vertical profiles of aerosol number density have been archived during 14-year period (October 1986 - September 2000) using a bi-static Argon ion lidar system at the Indian Institute of Tropical Meteorology (IITM), Pune (18°43 ′N, 73°51′E, 559 m amsl), India. The time series of monthly mean aerosol distributions in the boundary layer as well as at different altitudes have been subjected to the wavelet power spectral analysis to investigate different characteristic waves present in the data. The concurrent solar radiometric column aerosol optical depth data have also been analyzed. Both the time series exhibited 11-15 (annual) and 22-25 (quasi-biennial) months periodicities at statistically significant level, and their absolute power well matches with the Global Wavelet Spectra after smoothing, which further confirms the existence of such longer periodicities in the data. A brief description of the data series and wavelet transform analysis procedure are presented. Added, the implication of environmental parameters on the long-term trends in the lidar aerosol observations is also presented.

Original languageEnglish (US)
Pages (from-to)759-762
Number of pages4
JournalEuropean Space Agency, (Special Publication) ESA SP
Volume2
Issue number561
StatePublished - Jun 1 2004

Fingerprint

Wavelet analysis
wavelet analysis
Optical radar
India
optical radar
lidar
Aerosols
aerosols
aerosol
wavelet
tropical meteorology
periodicity
periodic variations
Time series
time series
Meteorology
argon
smoothing
optical thickness
Spectrum analysis

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Space and Planetary Science

Cite this

Devara, Panuganti China Sattilingam ; Pal, Sandip. / Wavelet analysis of 14 years' aerosol lidar observations over Pune, India. In: European Space Agency, (Special Publication) ESA SP. 2004 ; Vol. 2, No. 561. pp. 759-762.
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Wavelet analysis of 14 years' aerosol lidar observations over Pune, India. / Devara, Panuganti China Sattilingam; Pal, Sandip.

In: European Space Agency, (Special Publication) ESA SP, Vol. 2, No. 561, 01.06.2004, p. 759-762.

Research output: Contribution to journalArticle

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