: Halocarbons are the primary driver behind ozone depletion and global warming. There is a vast observation gap in the Himalayan region. We report the field observations of thirty-four halocarbons at Nepal Climate Laboratory-Pyramid station and near the Mt. Qomolangma (Everest) base camp in the high Himalayas, including their atmospheric abundance and related changes over time. The dominant ozone depleting substances (ODSs) exhibited a declining trend, reflecting the effectiveness of the Montreal Protocol. However, a larger increase in HFCs and a higher abundance of unregulated chlorocarbons (e. g., CH3Cl) in this region compared to the global and North-Hemisphere values were found. It underscores that more attention is needed, not only for knowing where and how much HFCs and unregulated chlorocarbons are being emitted, but also for understanding its complicated role in climate change.

Trends of halocarbons in the Himalayan atmosphere and implications

Arduini, Jgor
;
Maione, Michela
Membro del Collaboration Group
;
2024

Abstract

: Halocarbons are the primary driver behind ozone depletion and global warming. There is a vast observation gap in the Himalayan region. We report the field observations of thirty-four halocarbons at Nepal Climate Laboratory-Pyramid station and near the Mt. Qomolangma (Everest) base camp in the high Himalayas, including their atmospheric abundance and related changes over time. The dominant ozone depleting substances (ODSs) exhibited a declining trend, reflecting the effectiveness of the Montreal Protocol. However, a larger increase in HFCs and a higher abundance of unregulated chlorocarbons (e. g., CH3Cl) in this region compared to the global and North-Hemisphere values were found. It underscores that more attention is needed, not only for knowing where and how much HFCs and unregulated chlorocarbons are being emitted, but also for understanding its complicated role in climate change.
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11576/2747172
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 0
  • ???jsp.display-item.citation.isi??? ND
social impact