File:Vegetation Index (NESDIS 2017-09-14).png
From Wikimedia Commons, the free media repository
Jump to navigation
Jump to search
Size of this preview: 800 × 400 pixels. Other resolutions: 320 × 160 pixels | 640 × 320 pixels | 1,024 × 512 pixels | 1,280 × 640 pixels | 2,560 × 1,280 pixels | 4,096 × 2,048 pixels.
Original file (4,096 × 2,048 pixels, file size: 4.73 MB, MIME type: image/png)
File information
Structured data
Captions
Summary
[edit]DescriptionVegetation Index (NESDIS 2017-09-14).png |
English: The relative greenness of the planet is shown here using a time-smoothed Normalized Difference Vegetation Index (NDVI). There are many types of indices that measure vegetation and many are calculated by using satellite data to compare the relative difference between how much energy is absorbed by the land surface versus how much is reflected back into space. Plants absorb visible light to undergo photosynthesis, so when vegetation is lush, nearly all of the visible light is absorbed by the photosynthetic leaves, and much more near-infrared light is reflected back into space. However, for deserts and regions with sparse vegetation, the amounts of reflected visible and near-infrared light are both relatively high. In this imagery the seasonal effect of temperature and moisture can be seen as areas change from sparsely vegetated to lush. |
Date | 14 September 2017 (upload date) |
Source | Vegetation Index |
Author | NOAA |
Licensing
[edit]Public domainPublic domainfalsefalse |
This image is in the public domain because it contains materials that originally came from the U.S. National Oceanic and Atmospheric Administration, taken or made as part of an employee's official duties.
العربية ∙ čeština ∙ Deutsch ∙ Zazaki ∙ English ∙ español ∙ eesti ∙ suomi ∙ français ∙ hrvatski ∙ magyar ∙ italiano ∙ 日本語 ∙ 한국어 ∙ македонски ∙ മലയാളം ∙ Plattdüütsch ∙ Nederlands ∙ polski ∙ português ∙ română ∙ русский ∙ sicilianu ∙ slovenščina ∙ Türkçe ∙ Tiếng Việt ∙ 简体中文 ∙ 繁體中文 ∙ +/− |
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 15:58, 2 June 2024 | 4,096 × 2,048 (4.73 MB) | OptimusPrimeBot (talk | contribs) | #Spacemedia - Upload of https://nesdis-prod.s3.amazonaws.com/migrated/NDVI.png via Commons:Spacemedia |
You cannot overwrite this file.
File usage on Commons
There are no pages that use this file.