Temperature, Transmittance and Spectrum Dependent Scattering in Atmosphere | [Journal of Natural & Applied Sciences Pakistan • 2023]

Author(s):

1. Saddam Husain Dhobi: Central Department of Physics, Tribhuvan University, Kirtipur, Kathmandu, Nepal Department of Physics, Patan Multiple Camus, Tribhuvan University, Lalitpur, Nepal Innovative Ghar Nepal, Lalitpur, Nepal Robotic Academy of Nepal, Lalitpur, Nepal

2. Jeevan Jyoti Nakarmi: Central Department of Physics, Tribhuvan University, Kirtipur, Kathmandu, Nepal Department of Physics, Patan Multiple Camus, Tribhuvan University, Lalitpur, Nepal Innovative Ghar Nepal, Lalitpur, Nepal

3. Suresh Prasad Gupta: Department of Physics, Patan Multiple Camus, Tribhuvan University, Lalitpur, Nepal Innovative Ghar Nepal, Lalitpur, Nepal

4. Kishori Yadav: Department of Physics, Patan Multiple Camus, Tribhuvan University, Lalitpur, Nepal Innovative Ghar Nepal, Lalitpur, Nepal

5. Arun Kumar Shah: Central Department of Physics, Tribhuvan University, Kirtipur, Kathmandu, Nepal Department of Physics, Patan Multiple Camus, Tribhuvan University, Lalitpur, Nepal

6. Ram Lal Sah: Department of Physics, Padmakanya Multiple Campus, Tribhuvan University, Kathmandu, Nepal

Abstract:

Investigating the differential cross section (DCS) during the scattering of important from 0.2 µm to 100 µm, is the goal of this work. MATLAB was used to create a computational model that examined the nature of these interactions. Interesting information on the DCS values of the various gases is revealed by the study's observations. In particular, it was discovered that when the complete spectrum was taken into account, Ar DCS was higher than that of N2, O2, air, and CO2. However, it was discovered that the DCS of N2, O2, and air was higher than that of Ar and CO2 when taking transmittance and temperature into account at particular wavelengths. These comparisons were done at wavelengths of 0.3 µm, 0.6 µm, and 1.5 µm, respectively, respectively. These findings provide insight into the scattering characteristics of the investigated atmospheric gases. The higher DCS values for Ar across the whole spectrum range compared to N2, O2, air, and CO2 point to a stronger interaction between Ar and incident radiation. However, the DCS values of N2, O2, and air take precedence over Ar and CO2 when evaluating transmittance and temperature at particular wavelengths. The results of this study offer important new understandings of the scattering characteristics of the main atmospheric gases throughout a broad spectral range. The created computational model can aid in future research and improve our comprehension of atmospheric dynamics and radiative transfer phenomena.

Page(s): 1047-1055

DOI: DOI not available

Published: Journal: Journal of Natural & Applied Sciences Pakistan, Volume: 5, Issue: 1, Year: 2023

Keywords:

temperature , wavelength , Spectral , Atmospheric Gases , Transmittance , Differential Cross Section

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