Focus: GS III: Environment and Ecology
Why in News?
Delhi-NCR has been witnessing increase in the average air quality of Delhi-NCR over past few days.
- Taking note of the situation, the Sub-Committee for invoking actions under the Graded Response Action Plan (GRAP) of the Commission for Air Quality Management in NCR & Adjoining Areas (CAQM) accordingly met today to take stock of the current air quality scenario of Delhi-NCR and also assess technical as well as expert inputs related to forecasts for overall air quality of the region.
What is the Graded Response Action Plan?
- GRAP is a set of emergency measures that kick in to prevent further deterioration of air quality once it reaches a certain threshold.
- Stage 1 of GRAP is activated when the AQI is in the ‘poor’ category (201 to 300), for instance, the AQI in Delhi was 211.
- The second, third and fourth stages will be activated three days ahead of the AQI reaching the ‘very poor’ category (301 to 400), ‘severe’ category (401 to 450) and ‘severe +’ category (above 450) respectively.
- For this, the CAQM is relying on air quality and meteorological forecasts by the Indian Institute of Tropical Meteorology (IITM) and the India Meteorological Department (IMD).
- Measures being imposed under the previous categories will continue even when the subsequent category is activated, that is, if measures under Stage-2 are activated, measures under Stage-1 will continue to remain in place.
Other Details:
- The CAQM revised the Graded Response Action Plan earlier this year.
- The GRAP was first notified in January 2017 by the Ministry of Environment, Forest and Climate Change.
- This was based on a plan that was submitted by the Central Pollution Control Board (CPCB) in November 2016. According to the notification, the task of implementing the GRAP fell on the now dissolved Environment Pollution (Prevention and Control) Authority for the NCR.
- From 2021 onwards, the GRAP is being implemented by the CAQM.
