kcse revision notes HUMAN GEOGRAPHY The technology can help in assessing the impact of human activities on natural resources, identifying areas of conservation, and supporting sustainable resource management. Remote sensing can take images from multiple angles and wavelengths, providing valuable layers of information on a particular area. An even broader view would show the entire regionthe flooded river system or the mountain ranges and valleys that control the flow. Cheap and fast method of collecting data of large areas. Most satellite sensors are designed to measure the amount of Earth reflection in those regions in the spectrum which we refer to as atmospheric windows. thermal data prove to be complementary to other remote sensing data. A medium-Earth orbitsatellite takes approximately 12 hours to complete an orbit. A hemispheric view would show the movement of weather systems connected to the floods. csee review questions pdf The cryosphere encompasses the frozen parts of Earth, including glaciers and ice sheets, sea ice, and any other frozen body of water. Microwave energy has wavelengths that can pass through clouds, an attributeutilized by many weather and communication satellites. The impact of sun angle can limit the application of remote sensing technology in some areas. It can be used for updating road maps, asphalt conditions, and wetland delineation. Remote sensing can be used to study climate changes, such as atmospheric conditions, land surface temperature, and changes in ice cover. civics past papers The carrier for remote sensing sensors is characterized as a platform. This study set out to achieve four primary objectives: (1) utilize recent advancements in remote sensing techniques to classify the extent and distribution of aquatic vegetation in coastal ecosystems using satellite imagery, (2) assess prim, Introduction Electromagnetic energy, produced by the vibration of charged particles, travels in the form of waves through the atmosphere and the vacuum of space. history notes Remote Sensing: Overview, Types, and Applications - ThoughtCo Cameras on satellites and airplanes take images of large areas on the Earth's surface, allowing us to see much more than we can see when standing on the ground. Advantages for active sensors include the ability to obtain measurements anytime, regardless of the time of day or season. Earth is divided into latitudes and longitudes (degrees, minutes and seconds). Remote sensing can be affected by electromagnetic interference, such as radio waves, power lines, and other sources of electromagnetic radiation, which can affect the quality and accuracy of the data. For example, an 8 bit resolution is 28, which indicates that the sensor has 256 potential digital values (0-255) to store information. Requires a special kind of training to analyse the images. Very short high energy waves x-ray (measured in um). The word 'remote' is used in reference to the existence of something (object of interest) at a distant location or the one which is not present in physical contact. Remote Sensing is defined as an art or science of observing and gathering information about any object, scene, or phenomenon which exists at a remote location from the point of observation. Data Collection is really very easy over a variety of scales and solutions, Remote Sensing can allow repetitive coverage which generally comes manually when collecting data on dynamic themes like water and Agriculture field. Some examples are: Some specific uses of remotely sensed images of the Earth include: The Landsat 8 and Landsat 9 satellites orbit the Earth at an altitude of 705 kilometers (438 miles) in a 185-kilometer (115-mile) swath, moving from north to south over the sunlit side of the Earth in a sun synchronous orbit, following the World Reference System (WRS-2). Weather and cloud cover have a negative impact on these sensors since they operate in the visible and infrared wavelengths. Some features, such as underground resources or deep ocean features, cannot be accurately identified using remote sensing techniques, making it difficult to gain a complete picture of certain areas. The cube on the right represents the detail within the data. Understanding these advantages and disadvantages is important in the responsible and effective use of remote sensing technology. Types Of Remote Sensing: Devices And Their Applications Most passive systems used by remote sensing applications operate in the visible, infrared, thermal infrared, and microwave portions of the electromagnetic spectrum. The regions of the electromagnetic spectrum which are not seriously affected by scattering + absorption and thus reach the Earth are called atmospheric windows. Advantages of Remote Sensing Remote Sensing Technology Can Survey Large and Inaccessible Areas. Landsat 9s TIRS is a Class-B instrument with a five-year design life and a key improvement of stray light Color-infrared (CIR) aerial photography--often called "false color" photography because it renders the scene in colors not normally seen by the human eye--is widely used for interpretation of natural resources. The joint NASA/NOAA Geostationary Operational Environmental Satellite (GOES) series of weather satellites are in geostationary orbits above the equator. Define colors when using color to distinguish features, its important to know the band combination used in creating the image. Remote sensing is the process of obtaining information about an object or the environment without being in physical contact with it. High cost for high spatial resolution images. Remote sensing can generate large amounts of data, which can be challenging to store, manage, and analyze, requiring specialized hardware and software. The Sun influences a variety of physical and chemical processes in Earths atmosphere. For example, knowing that an area was recently burned by a wildfire can help determine why vegetation may appear different in a remotely-sensed image. The human dimensions discipline includes ways humans interact with the environment and how these interactions impact Earths systems. Dive into 18 collaborative articles on Remote Sensing and its various applications. civics With point cloud software, this data can now be evaluated fast and simply. 1. The joint NASA/Japan Aerospace Exploration AgencyGlobal Precipitation Measurement (GPM) Core Observatoryis an example of a non-Sun-synchronous low-Earth orbit satellite. Disadvantages of remote sensing include limited resolution and accuracy, lack of direct contact, weather conditions, technical expertise requirements, and limitations in capturing small-scale features. Many sensors acquire data at different spectral wavelengths. Unfortunately, no technology is without flaws, and remote sensing is no exception. Are the scanned aerial photographic images georectified? For more information on integrating NASA Earth science data into a GIS, check out theEarthdata GIS page. NASA observes Earth and other planetary bodies via remote sensors on satellites and aircraft that detect and record reflected or emitted energy. This vast, critical reservoir supports a diversity of life and helps regulate Earths climate. Only a very tiny portion of the waves in the electromagnetic spectrum can be seen with the naked eye. Remote sensing (geology) - Wikipedia The ethical considerations can limit the use and accessibility of remote sensing data in some applications. The limited availability of remote sensing platforms can limit the use and accessibility of remote sensing data in some applications. PRACTICAL GEOGRAPHY You may collect data in a variety of sizes and resolutions with remote sensing. Advantages of remote sensing include wide coverage, non-intrusiveness, real-time data capture, usefulness in hazardous areas, cost-effectiveness, and scalability. Numerousdata toolsare available to subset, transform, visualize, and export to various other file formats. Population and demography research, archaeological site investigations, energy studies utilizing hydrological models, urban planning, environmental treaty enforcement, and agricultural yields are all examples of applications that may be made using these data. While the benefits of remote sensing exceed the disadvantages, it's a good idea to think about the following drawbacks before investing in this survey approach. This calibration is never exact; a classification error of 10% is excellent. 7. The ocean, on the other hand, reflects only about 6% of incoming solar radiation and absorbs the rest. The data collected through remote sensing can help in environmental policy-making, resource management, and climate change mitigation. Remote sensing equipment must be calibrated before use in order to acquire reliable measurements. Sensors are put on an aircraft, drone, or even a satellite to measure light reflections from surfaces. Tracking clouds to help predict the weather or watching erupting volcanoes, and help watching for dust storms. Remote Sensing Instruments Need to Be Calibrated. What is PESTLE Analysis? GIS and Remote Sensing Applications in Amphibian and Reptiles Research all form four past paper Alternatively, data acquired from forests to assess wildfire danger may be utilised to track biodiversity. Remote sensing is used by the satellite to give the exact position and what its capturing. The interpretation of remote sensing data requires specialized skills and knowledge, which can limit its widespread use. The accuracy of remote sensing data can be affected by calibration issues, such as the sensors drift, which can lead to errors in the data. Easy collection of data over a variety of scales and resolutions. POPULATION AND DEVELOPMENT Remote sensors, which provide a global perspective and a wealth of data about Earth systems, enable data-informed decision making based . All data are processed to at least a Level 1, but most have associated Level 2 (derived geophysical variables) and Level 3 (variables mapped on uniform space-time grid scales) products. Remote sensing may often be used to anticipate the advent of natural disasters. Recognizing the connections between interdependent Earth systems is critical for understanding the world in which we live. Find and use NASA Earth science data fully, openly, and without restrictions. Advantages and disadvantages of Remote Sensing - SlideShare Most passive sensors cannot penetrate dense cloud cover and thus have limitations observing areas like the tropics where dense cloud cover is frequent. Remote sensing data is useful in obtaining up-to-date land use pattern of large areas at any given time and also monitor changes that occur from time to time. An Ariel photograph is a common example of a remotely sensed (by . Difference Between Supervised and Unsupervised Classification In Remote Sensing. disadvantages of remote sensing measurements - NVU-Lyndon Atmospheric Some sensors have hundreds to even thousands of bands and are considered to behyperspectral. Most data are stored in Hierarchical Data Format (HDF) or Network Common Data Form (NetCDF) format. The electromagnetic interference can limit the reliability and usefulness of remote sensing data in some applications. Remote sensing can be used to monitor and manage natural resources, such as forests, wetlands, and marine ecosystems. The Advantages and Disadvantages of Remote Sensing OLI has a slightly improved signal-to-noise ratio over Landsat 8's OLI. The atmosphere is a gaseous envelope surrounding and protecting our planet from the intense radiation of the Sun and serves as a key interface between the terrestrial and ocean cycles. Some examples are: Lack of Infrastructure and Technology, 15. Remote sensing can generate large amounts of data, which can be challenging to store, manage, and analyze, requiring specialized hardware and software, affecting its accessibility and usefulness in some applications. I recently recovered back about 145k worth of Usdt from greedy and scam broker with the help of Mr Koven Gray a binary recovery specialist, I am very happy reaching out to him for help, he gave me some words of encouragement and told me not to worry, few weeks later I was very surprise of getting my lost fund in my account after losing all hope, he is really a blessing to this generation, and this is why I'm going to recommend him to everyone out there ready to recover back their lost of stolen asset in binary option trade. Dust particles + gases in the atmosphere cause scattering + absorption of some of the light + radiation. What are the advantages and disadvantages of remote sensing? Remote sensing can be expensive to implement and maintain, limiting its accessibility in some areas. This Video deals with the topic of Advantages and Disadvantages of Remote Sensing Technology along with the Relevance of Remote Sensing in Geography.The foll. This is very important since it allows us to distinguish between Earth features by measuring the nature of their interaction with electromagnetic energy. Although most passive sensors function in the visible and infrared parts of the EMS, certain passive microwave sensors are also used to monitor variables like wind speed, air and sea surface temperature, soil moisture, rainfall, and atmospheric water vapor.