Remote sensing involves collecting information about an object or area without physical contact using devices like satellites and aircraft. There are two main types: passive sensing which detects natural radiation like sunlight, and active sensing which emits energy like radar. The first weather satellite, TIROS-1, was launched in 1960 and used cameras to scan wide areas, revolutionizing remote sensing. Satellites provide an extended view of Earth and allow data collection in dangerous or inaccessible places without disturbing the environment. Remote sensing is used in fields like natural resource management and agriculture.

1. REMOTE SENSING

5. Passive sensors detect natural radiation that is emitted or reflected by the object or surrounding area being observed.

6. Reflected sunlight is the most common source of radiation measured by passive sensors.

9. Continued.. From their high vantage-point, satellites have a greatly extended view of the Earth's surface. The first meteorological satellite, TIROS-1 was launched by the United States using an Atlas rocket on April 1, 1960. This early weather satellite used vidicon cameras to scan wide areas of the Earth's surface. Once captured, this data is then transmitted electronically to receiving stations found on the Earth's surface

10. advantages Remote sensing makes it possible to collect data on dangerous or inaccessible areas and Remote sensing also replaces costly and slow data collection on the ground, ensuring in the process that areas or objects are not disturbed. Other uses include different areas of the earth sciences such as natural resource management, agricultural fields such as land usage and conservation.

11. continued. Radiometers and photometers are the most common instrument in use, collecting reflected and emitted radiation (radio active mineral) Stereographic pairs of aerial photographs have often been used to make topographic maps by imagery ( toposheet). Earth scientists use the technique of remote sensing to measure phenomena found in the Earth's lithosphere, biosphere, hydrosphere, and atmospher

12. continued Advanced sensors aboard the GOES satellite produce a continuous data stream so images can be viewed at any instance. The imaging sensor produces visible and infrared images of the Earth's terrestrial surface and oceans (Figure 5). Infrared images can depict weather conditions even during the night. Another sensor aboard the satellite can determine vertical temperature profiles, vertical moisture profiles, total precipitable water, and atmospheric stability.

13. Figure 3: TIROS-1 satellite. (Source: NASA - Remote Sensing Tutorial)

14. Color image from GOES-8 of Hurricanes Madeline (Source: NASA - Looking at Earth From Space)

15. The image below is from TIROS-7 of a mid-latitude cyclone off the coast of New Zealand. (Source: NASA - Looking at Earth From Space) (Source: NASA - Looking at Earth From Space) (Source: NASA - Looking at Earth From Space) (Source: NASA - Looking at Earth From Space)

16. Bathurst Island in Nunavut, Canada. false-color image of the southern portion of Manhatten Island Yankee stadium in Brooklyn

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