Physics – Atmospheric and Oceanic Physics
Scientific paper
2003-06-05
Physics
Atmospheric and Oceanic Physics
10 pages, 5 figures, significantly shortened, main conclusions unchanged, accepted for publication in Jr. of Geophys. Reasearc
Scientific paper
We present, for the first time, spectral behaviour of aerosol optical depths (AODs) over Manora Peak, Nainital located at an altitude of $\sim$ 2 km in the Shivalik ranges of central Himalayas. The observations were carried out using a Multi-Wavelength solar Radiometer during January to December 2002. The main results of the study are extremely low AODs during winter, a remarkable increase to high values in summer and a distinct change in the spectral dependencies of AODs from a relatively steeper spectra during winter to a shallower one in summer. During transparent days, the AOD values lie usually below 0.08 while during dusty (turbid) days, it lies between 0.08 to 0.69 at 0.5 $\mu$m. The average AOD value at 0.5 $\mu$m during winters, particularly in January and February, is $\sim 0.03\pm0.01$. The mean aerosol extinction law at Manora Peak during 2002 is best represented by $0.10 \lambda^{-0.61}$. However during transparent days, which almost covers 40% of the time, it is represented by $0.02 \lambda^{-0.97}$. This value of wavelength exponent, representing reduced coarse concentration and presence of fine aerosols, indicates that the station measures aerosol in the free troposphere at least during part of the year.
Dumka U. C.
Krishna Moorthy K.
Kumar Brijesh
Pant Prita
Sagar Ram
No associations
LandOfFree
Characteristics of Aerosol Spectral Optical Depths over Manora Peak, Nainital $-$ A High Altitude Station in the Central Himalayas does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Characteristics of Aerosol Spectral Optical Depths over Manora Peak, Nainital $-$ A High Altitude Station in the Central Himalayas, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Characteristics of Aerosol Spectral Optical Depths over Manora Peak, Nainital $-$ A High Altitude Station in the Central Himalayas will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-24312