SavedAdd your journal

Journals / Atmospheric Pollution Research / 2020 / Cilt: 11 - Sayı: 11

Trace pollutant fluctuations observed in Calicut city, India, during the annular solar eclipse on 26 December 2019

Anoop PAKKATTIL
M. MUHSIN
Shebin JOHN
Aiswarya SASEENDRAN
Arun P. THOMAS
Deepa V.
Ravi VARMA
Pages
2049–2055
DOI
—
🏛️Bibliographic metadata and full text access for this article are provided via DergiPark.
DergiPark Record ↗
✨

AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The NO3 radical mixingratios were below the detection limit during the eclipse event.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Atmospheric boundary layer perturbations were monitored during an annular solar eclipse event on December26, 2019 to understand its impact on the meteorological parameters (temperature, relative humidity, windspeed, and wind direction) and trace gas concentrations (O3, NO, NO2, NH3, CO, and HONO) at Calicut (11.24°N, 75.78° E), a tropical city along the coastal belt of Arabian Sea in the southwest coast of Indian Subcontinent.The solar eclipse started at 8:05 IST (5.5 h ahead of UTC), reached to a maximum coverage of 93.28% at 09:27IST and ends at 11:07 IST.
📊
Key Findings & Data:Therapid fall in the irradiance caused cooling of the surface air by ~0.7 °C and weakened the wind speed, whereasthe relative humidity, as expected, was increased by 5.1%.
💡
Conclusion & Impact:The NO3 radical mixingratios were below the detection limit during the eclipse event.
🔬Design:Research Article
📍Scope:2019 Verileri
⚙️Variables:Domain Parameters

Özet

Atmospheric boundary layer perturbations were monitored during an annular solar eclipse event on December26, 2019 to understand its impact on the meteorological parameters (temperature, relative humidity, windspeed, and wind direction) and trace gas concentrations (O3, NO, NO2, NH3, CO, and HONO) at Calicut (11.24°N, 75.78° E), a tropical city along the coastal belt of Arabian Sea in the southwest coast of Indian Subcontinent.The solar eclipse started at 8:05 IST (5.5 h ahead of UTC), reached to a maximum coverage of 93.28% at 09:27IST and ends at 11:07 IST. Eclipse day data were compared with the nearby days' records from this site. Therapid fall in the irradiance caused cooling of the surface air by ~0.7 °C and weakened the wind speed, whereasthe relative humidity, as expected, was increased by 5.1%. A gradual decrease in the surface O3 along with thereduction in solar irradiance was observed during the eclipse, due to the decreased efficiency in the photochemical formation of ozone. There was a decrease in mixing ratios of NO2 during the eclipse period, which wasa result of the fall in ozone concentrations. No significant variation was observed in HONO levels, whereasvariations in concentrations of NO and NH3 have followed the night time chemistry. The NO3 radical mixingratios were below the detection limit during the eclipse event.

🔖

Cite This Article

PAKKATTIL, A., MUHSIN, M., JOHN, S., SASEENDRAN, A., THOMAS, A. P., V., D., VARMA, R. (2020). Trace pollutant fluctuations observed in Calicut city, India, during the annular solar eclipse on 26 December 2019. Atmospheric Pollution Research, Cilt: 11 - Sayı: 11, 2049–2055. https://ajindex.com/articles/351552

References (10)

  1. Abram, J.P., Creasey, D.J., Heard, D.E., Lee, J.D., Pilling, M.J., 2000. Hydroxyl radical and ozone measurements in England during the solar eclipse of 11 August 1999. Geophys. Res. Lett. 27, 3437–3440. https://doi.org/10.1029/2000GL012164.
  2. Adams, C., McLinden, C.A., Strong, K., Umlenski, V., 2010. Ozone and NO2 variations measured during the 1 August 2008 solar eclipse above Eureka, Canada with a UVvisible spectrometer. J. Geophys. Res. Atmos. 115, 1–11. https://doi.org/10.1029/ 2010JD014424. Alghamdi, M.A., Khoder, M., Harrison, R.M., Hyvärinen, A.P., Hussein, T., Al-Jeelani, H., Abdelmaksoud, A.S., Goknil, M.H., Shabbaj, I.I., Almehmadi, F.M., Lihavainen, H., Hämeri, K., 2014. Temporal variations of O3 and NOx in the urban background atmosphere of the coastal city Jeddah, Saudi Arabia. Atmos. Environ. 94, 205–214. https://doi.org/10.1016/j.atmosenv.2014.03.029.
  3. Amiridis, V., Melas, D., Balis, D.S., Papayannis, A., Founda, D., Katragkou, E., Giannakaki, E., Mamouri, R.E., Gerasopoulos, E., Zerefos, C., 2007. Aerosol lidar observations and model calculations of the planetary boundary layer evolution over Greece, during the march 2006 total solar eclipse. Atmos. Chem. Phys. 7, 6181–6189. https://doi.org/ 10.5194/acp-7-6181-2007.
  4. Awang, N.R., Elbayoumi, M., Ramli, N.A., Yahaya, A.S., 2016. Diurnal variations of ground-level ozone in three port cities in Malaysia. Air Qual. Atmos. Heal. 9, 25–39. https://doi.org/10.1007/s11869-015-0334-7.
  5. Bojkov, R.D., 1968. The ozone variations during the solar eclipse of 20 May 1966. Tellus 20, 417–421. https://doi.org/10.3402/tellusa.v20i3.10020.
  6. Chandran, S., Puthukkudy, A., Varma, R., 2017. Dual-wavelength dual-cavity spectrometer for NO2 detection in the presence of aerosol interference. Appl. Phys. B Laser Optic. 123, 1–8. https://doi.org/10.1007/s00340-017-6789-5.
  7. Chung, Y.S., Kim, H.S., Choo, S.H., 2010. The solar eclipse and associated atmospheric variations observed in South Korea on 22 July 2009. Air Qual. Atmos. Heal. 3, 125–130. https://doi.org/10.1007/s11869-009-0060-0.
  8. Colbeck, I., Harrison, R.M., 1985. Dry deposition of ozone: some measurements ofdeposition velocity and of vertical profiles to 100 metres. Atmos. Environ. 19, 1807–1818. https://doi.org/10.1016/0004-6981(85)90007-1.
  9. Dixneuf, S., Ruth, A.A., Vaughan, S., Varma, R.M., Orphal, J., 2009. The time dependence of molecular iodine emission from Laminaria digitata. Atmos. Chem. Phys. 9, 823–829. https://doi.org/10.5194/acp-9-823-2009.
  10. Fabian, P., Rappe