UPSC Courses

DNA banner


  • 05 November, 2022

  • 5 Min Read

Climate Change and the Rainbow

Climate Change and the Rainbow

  • According to a recent study, the changes in cloud cover and liquid precipitation brought on by higher greenhouse gas emissions are expected to result in a net increase in the mean number of rainbow days worldwide each year.
  • By 2100, the average number of rainbow days is anticipated to increase globally by 4.0–4.9% per year.

What about Rainbows has the study revealed?

Locations with Fewer Rainbows

  • Rainbow days will disappear from about 21-34% of geographical regions.
  • By 2100, overall precipitation is expected to be lower in areas that would get fewer rainbow days, with the exception of those in Central Africa, Madagascar, and central South America.
  • All are anticipated to have fewer yearly cloudy days and more annual dry days.

Regions with More Rainbows

  • Under higher emission futures, rainbow days will increase by about 66-79%.
  • One of the nations where there will be an increase in rainbow days is India.
  • Additionally, it is expected that more rainbow days will occur in African nations including Mali, Niger, Chad, Sudan, and Ethiopia.
  • In regions where warming is expected to result in less snow and more rain, such as the Tibetan Plateau, rainbow gain hotspots are typically found at higher latitudes or extremely high elevations.
  • Eastern Borneo and northern Japan, two rainbow gain hotspots, may have more dry days annually despite an increase in overall precipitation.

How are the rainbow and climate change connected?

  • A typical visual phenomenon in the atmosphere is a rainbow. The consequence of water droplets reflecting sunlight is a multicolored arc in the sky.
  • A portion of the light that strikes a raindrop is reflected. Each wavelength of light that makes up the electromagnetic spectrum is reflected at a distinct angle. As a result, the spectrum is divided, creating a rainbow.
  • You can see rainbows near waterfalls, sea spray, or fog.
  • It is merely an optical illusion; it is not situated in any particular area of the sky.
  • The refraction and reflection of light produce rainbows.
  • A shift in a wave's direction is a factor in both the phenomena of refraction and reflection.
  • While a reflected wave may appear to "bounce back" from a surface or other wavefront, a refracted wave may appear to be "bent."
  • The basic rainbow's hues are always red, orange, yellow, green, blue, indigo, and violet, in the order of their wavelengths from longest to shortest.

Linkage with Climate Change:

  • The warming of the climate caused by human activity like the combustion of fossil fuels alters rainfall patterns, amounts, and cloud cover.
  • Due to changes in moisture evaporation and convergence, climate change will vary the distribution of rainbow occurrence.
  • This modifies cloud cover and precipitation patterns.

Read Also: Supreme Court Verdict on EWS Quota

Source: Down To Earth

Pradhan Mantri Suryodaya Yojana

Recently, Prime Minister announced Pradhan Mantri Suryodaya Yojana under which 1 crore households will get rooftop solar power systems. India’s Status of Current Solar Capacity India currently stands at 4th place globally in solar power capacity. As per Ministry of New an

Foreign Contribution Regulation Act (FCRA)- NGO 

The Foreign Contribution Regulation Act, 2010 (FCRA) registration of two prominent non-governmental organisations (NGOs) — Centre for Policy Research (CPR) and World Vision India (WVI) have been cancelled this month. What is FCRA? Key provisions of FCRA, 2010 Key aspects Description

Voice clone-AI

Voice clone fraud has been on the rise in India. AI voice cloning – It is the process of creating a synthetic replica of a person’s voice through machine learning and speech synthesis technology.It is called as voice deepfakesor audio deepfakes. Objective – To achieve a high level of na

Science communication- how to promote

Steps taken by India to promote Science Communication Publications and Information Directorate (PID) - An organisation under Council of Science and Industrial Research (CSIR) established in 1951 for publishing and disseminating scientific information in India. National science magazines- The PI

Universal Basic Income (UBI)- Analysis

Universal Basic Income (UBI) can strengthen welfare architecture and unlock the nation’s latent demographic potential. UBI - It is an income support mechanism typically intended to reach all or a very large portion of the population regardless of their earnings or employment status. Objective- To provide enough to co


Search By Date

Newsletter Subscription
SMS Alerts

Important Links