Study of Wind pattern at the incursion site of Pangong Tso near Merak Village

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Bibliographic Details
Main Authors:	Ravindra, Belur, Sarkar, Deepangkar, Ningombam, Shantikumar Singh, Tundup, Stanzin, Dorje, Namgyal, Dorje, Angchuk, Kesavan, Prabhu, Banerjee, Dipankar
Format:	Preprint
Published:	2025
Subjects:	Instrumentation and Methods for Astrophysics
Online Access:	Acceder al recurso
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author	Ravindra, Belur Sarkar, Deepangkar Ningombam, Shantikumar Singh Tundup, Stanzin Dorje, Namgyal Dorje, Angchuk Kesavan, Prabhu Banerjee, Dipankar
author_facet	Ravindra, Belur Sarkar, Deepangkar Ningombam, Shantikumar Singh Tundup, Stanzin Dorje, Namgyal Dorje, Angchuk Kesavan, Prabhu Banerjee, Dipankar
contents	This study analyzes twelve years of wind speed and direction data collected at the proposed National Large Solar Telescope (NLST) site near Pangong Tso, Merak village, Leh-Ladakh. A weather station from Campbell Scientific Instruments, installed in 2008, has been continuously monitoring meteorological parameters, including wind speed and direction. The data reveals a consistent pattern of predominantly northwest winds, particularly during morning hours, with speeds generally below 5 m/s. While seasonal variations influence wind speed and direction, the overall trend remains stable. To assess the site's suitability for astronomical observations, we compared high-altitude wind speeds at various renowned astronomical sites using reanalysis data from 2008 to 2020. Strong correlations were observed between surface and high-altitude wind speeds at 10~m, 50~m, and 500~m. Statistical analysis of 200-mbar pressure level wind speeds identified La Palma as the most favorable site with a wind speed of 18.76~m/s. La Silla, on the other hand, exhibited the highest wind speed at 34.76~m/s. Merak's estimated wind speed of 30.99~m/s, coupled with its favorable wind direction and low surface wind speeds, suggests its potential as a promising site for astronomical observations.
format	Preprint
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institution	arXiv
publishDate	2025
record_format	arxiv
spellingShingle	Study of Wind pattern at the incursion site of Pangong Tso near Merak Village Ravindra, Belur Sarkar, Deepangkar Ningombam, Shantikumar Singh Tundup, Stanzin Dorje, Namgyal Dorje, Angchuk Kesavan, Prabhu Banerjee, Dipankar Instrumentation and Methods for Astrophysics This study analyzes twelve years of wind speed and direction data collected at the proposed National Large Solar Telescope (NLST) site near Pangong Tso, Merak village, Leh-Ladakh. A weather station from Campbell Scientific Instruments, installed in 2008, has been continuously monitoring meteorological parameters, including wind speed and direction. The data reveals a consistent pattern of predominantly northwest winds, particularly during morning hours, with speeds generally below 5 m/s. While seasonal variations influence wind speed and direction, the overall trend remains stable. To assess the site's suitability for astronomical observations, we compared high-altitude wind speeds at various renowned astronomical sites using reanalysis data from 2008 to 2020. Strong correlations were observed between surface and high-altitude wind speeds at 10~m, 50~m, and 500~m. Statistical analysis of 200-mbar pressure level wind speeds identified La Palma as the most favorable site with a wind speed of 18.76~m/s. La Silla, on the other hand, exhibited the highest wind speed at 34.76~m/s. Merak's estimated wind speed of 30.99~m/s, coupled with its favorable wind direction and low surface wind speeds, suggests its potential as a promising site for astronomical observations.
title	Study of Wind pattern at the incursion site of Pangong Tso near Merak Village
topic	Instrumentation and Methods for Astrophysics
url	https://arxiv.org/abs/2503.16150

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