Call Us Now

+91 9606900005 / 04

For Enquiry

legacyiasacademy@gmail.com

Early Warning For Heatwaves Sees Huge Improvement

Context:

Indian scientists have, for the first time, been able to predict heatwaves even one season in advance.

Relevance:

GS  III- Environment (Climate change)

Dimensions of the Article:

  1. Details
  2. About Heat Wave
  3. Criteria for Heat Waves
  4. Health Impacts

Details:

  • In a recent study, the India’s Ministry of Earth Sciences have documented for the first time that Indian heatwaves can be predicted even one season in advance.
  • They used 37 years (1981-2017) of hindcasts from the Monsoon Mission Coupled Climate Forecast Model (MMCFS).
  • It documented the seasonal predictions of frequency and duration of Indian heatwaves during April-June are very useful.

About Heat Wave

  • A heat wave is a period of abnormally high temperatures, more than the normal maximum temperature that occurs during the summer season in the North-Western and South Central parts of India.
  • Heat waves typically occur between March and June, and in some rare cases even extend till July.
  • Higher daily peak temperatures and longer, more intense heat waves are becoming increasingly frequent globally due to climate change.
Criteria for Heat Waves
  • The heat wave is considered when the maximum temperature of a station reaches at least 40°C for Plains and at least 30°C for Hilly regions.
  • If the normal maximum temperature of a station is less than or equal to 40°C, then an increase of 5°C to 6°C from the normal temperature is considered to be heat wave condition.
  • Further, an increase of 7°C or more from the normal temperature is considered as severe heat wave condition.
  • If the normal maximum temperature of a station is more than 40°C, then an increase of 4°C to 5°C from the normal temperature is considered to be heat wave condition. Further, an increase of 6°C or more is considered as severe heat wave condition.
  • Additionally, if the actual maximum temperature remains 45°C or more irrespective of normal maximum temperature, a heat wave is declared.
Health Impacts
  • The health impacts of Heat Waves typically involve dehydration, heat cramps, heat exhaustion and/or heat stroke.
  • It also causes heat cramps, fatigue, weakness, dizziness, headache, nausea, vomiting, muscle cramps and sweating.
  • The extreme temperatures and resultant atmospheric conditions adversely affect people living in these regions as they cause physiological stress, sometimes resulting in death.

Source: The Hindu


Download PDF
December 2022
MTWTFSS
 1234
567891011
12131415161718
19202122232425
262728293031 
Categories