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മൺസൂൺ 2021 പ്രവചനം തുടരുന്നു

*കേരളത്തിൽ ഇത്തവണ കാലവര്ഷം സാധരണ നിലയിൽ ആകാൻ സാധ്യത. ജപ്പാൻ, യു. കെ കാലാവസ്ഥ ഏജൻസികൾ*

*ലോകത്തെ പ്രമുഖ അന്താരാഷ്ട്ര കാലാവസ്ഥ ഏജൻസികളയായ ജപ്പാൻ കാലാവസ്ഥ ഏജൻസി (JMA), യു. കെ കാലാവസ്ഥ ഏജൻസി ( യു കെ മെറ്റ് ഓഫീസ് )എന്നിവയുടെ ഏപ്രിൽ മാസത്തെ അന്തരീക്ഷ സ്ഥിതി പ്രകാരം ഇത്തവണ കാലാവര്ഷം (ജൂൺ -ഓഗസ്റ്റ്) കേരളത്തിൽ സാധാരണ നിലയിൽ ആയിരിക്കാൻ സാധ്യത.*

*കേന്ദ്ര കാലാവസ്ഥവകുപ്പ് ഇന്നലെ പുറപെടുവിച്ച പ്രവചന പ്രകാരം കേരളത്തിൽ സാധാരണയിൽ കൂടുതൽ മഴ പ്രതീക്ഷിക്കുന്നു

Vineesh V
Assistant Professor of Geography,
Government College Chittur, Palakkad
Government of Kerala.

https://vineesh-geography.business.site

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Atmospheric Window

The atmospheric window in remote sensing refers to specific wavelength ranges within the electromagnetic spectrum that can pass through the Earth's atmosphere relatively unimpeded. These windows are crucial for remote sensing applications because they allow us to observe the Earth's surface and atmosphere without significant interference from the atmosphere's constituents. Key facts and concepts about atmospheric windows: Visible and Near-Infrared (VNIR) window: This window encompasses wavelengths from approximately 0. 4 to 1. 0 micrometers. It is ideal for observing vegetation, water bodies, and land cover types. Shortwave Infrared (SWIR) window: This window covers wavelengths from approximately 1. 0 to 3. 0 micrometers. It is particularly useful for detecting minerals, water content, and vegetation health. Mid-Infrared (MIR) window: This window spans wavelengths from approximately 3. 0 to 8. 0 micrometers. It is valuable for identifying various materials, incl

DRA Disaster Risk Assessment

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Linear Arrays Along-Track Scanners or Pushbroom Scanners

Multispectral Imaging Using Linear Arrays (Along-Track Scanners or Pushbroom Scanners) Multispectral Imaging: As previously defined, this involves capturing images using multiple sensors that are sensitive to different wavelengths of electromagnetic radiation. Linear Array of Detectors (A): This refers to a row of discrete detectors arranged in a straight line. Each detector is responsible for measuring the radiation within a specific wavelength band. Focal Plane (B): This is the plane where the image is formed by the lens system. It is the location where the detectors are placed to capture the focused image. Formed by Lens Systems (C): The lens system is responsible for collecting and focusing the incoming radiation onto the focal plane. It acts like a camera lens, creating a sharp image of the scene. Ground Resolution Cell (D): As previously defined, this is the smallest area on the ground that can be resolved by a remote sensing sensor. In the case of linear array scanne

Discrete Detectors and Scanning mirrors Across the track scanner Whisk broom scanner.

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Hazard Vulnerability Exposure Risk

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Vineesh V, Geography

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