Are local or transboundary factors causing Klang Valley haze?

Question

Accepted Answer

Local factors are identified as the cause of Klang Valley haze.

Meteorological analysis, including data from the Asean Specialised Meteorological Centre (ASMC) hotspot data, atmospheric modelling, the Malaysian Community Multiscale Air Quality model, and wind trajectory analysis, indicated that the haze affecting the Klang Valley had local causes. This monitoring effort was supported by satellite imagery from the ASMC and weather information shared by neighbouring countries.
Local Causes Identified for Klang Valley Haze

Analysis combining meteorological data, ASMC hotspot information, atmospheric modelling, and air quality models pointed towards local factors as the primary drivers of the haze observed in the Klang Valley. This comprehensive assessment included wind trajectory analysis to understand the air mass movements contributing to the haze.
Supporting Data from Regional and National Sources

The assessment of haze causes was bolstered by satellite imagery provided by the ASMC. Additionally, weather information shared by neighbouring countries played a role in the overall monitoring and analysis process, contributing to a more complete picture of atmospheric conditions.
Southwest Monsoon and El Niño Influence

The ongoing Southwest Monsoon season, which is expected to continue until the end of September, contributes to lower humidity and reduced rainfall. This dry condition, exacerbated by the influence of El Niño, which is anticipated to intensify between October and December, increases the risk of fires. These combined factors create a higher potential for both local and transboundary haze events.
Differentiated Haze Causes in Sarawak

In contrast to the Klang Valley, the haze affecting parts of Sarawak was linked to a combination of both local and transboundary factors. Weather model analysis showed consistent wind patterns blowing from areas in western Borneo with a high concentration of hotspots towards southern Sarawak, indicating a transboundary influence in addition to potential local sources.

Reading history

Hide →

This history is cleared when the page is closed.

Are local or transboundary factors causing Klang Valley haze?

Loading

Was this article helpful?

Helpful

Not helpful

Report an issue

4

0

0

Share with friends