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\"CATS in Space Keep Eyes on Atmosphere\"

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CATS Principal Investigator Matt McGill discusses the upcoming mission to the International Space Station.

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Internal to the laser, special optical crystals are used to generate 3 wavelengths of light by adding the energy of two photons, to make a single new photon. The final output beam is made up of all three wavelengths and these photons are transmitted in groups, towards the atmosphere, at the speed of light. As photons encounter clouds or particles, scattering of the laser beam occurs. Very few of the photons scatter directly back to the optical telescope, but the ones that return, are collected and counted by sensitive detectors and electronics. 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Now, with the help of a new instrument being launched this month to the International Space Station, scientists can better explore the properties of clouds and aerosols from space. The Cloud-Aerosol Transport System (CATS) is a refrigerator-sized probe that will bounce lasers into the atmosphere, collecting data on the location and composition of clouds and aerosols around the globe. The results will provide the closest look yet at how clouds form, sharpening computer models that use such information to project how cloud patterns may influence Earth's weather and climate. Watch the video for an animation that shows CATS scanning the atmosphere from orbit. || ", "release_date": "2014-12-11T11:00:00-05:00", "update_date": "2023-05-03T13:50:13.690210-04:00", "main_image": { "id": 448162, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011600/a011690/c-1024_print.jpg", "filename": "c-1024_print.jpg", "media_type": "Image", "alt_text": "NASA is sending a holiday gift to the International Space Station: new eyes to probe our sky.", "width": 1024, "height": 576, "pixels": 589824 } }, { "id": 4180, "url": "https://svs.gsfc.nasa.gov/4180/", "page_type": "Visualization", "title": "Volume-Rendered Global Atmospheric Model", "description": "This visualization shows early test renderings of a global computational model of Earth's atmosphere based on data from NASA's Goddard Earth Observing System Model, Version 5 (GEOS-5). This particular run, called 7km GEOS-5 Nature Run (7km-G5NR), was run on a supercomputer, spanned 2 years of simulation time at 30 minute intervals, and produced petabytes of output. The model uses a 7.5 km cube-sphere parameterization. Geographic coordinate output volumes from the model are 5760 x 2881 x 72 voxels per time step. For each voxel numerous physical parameters are available such as temperature, wind speed and direction, pressure, humidity, etc. This visualziation uses a combination of the CLOUD and TAUIR parameters.The visualization spans a little more than 7 days of simulation time which is 354 time steps. The time period was chosen because a simulated category-4 typhoon developed off the coast of China. The frames were rendered using Renderman. Brickmap volumes generated for each time step are about 2.6 gigabytes. This short visualization referenced nearly a terabyte of brickmap files. The 7 day period is repeated several times during the course of the visualization.This visualization was presented at SIGGRAPH 2014 during the Dailies session. || ", "release_date": "2014-08-10T00:00:00-04:00", "update_date": "2023-05-03T13:50:40.039099-04:00", "main_image": { "id": 453955, "url": "https://svs.gsfc.nasa.gov/vis/a000000/a004100/a004180/test28.1600_print.jpg", "filename": "test28.1600_print.jpg", "media_type": "Image", "alt_text": "Clouds and TAUIR from the 7km GEOS-5 Nature Run (7km-G5NR)For complete transcript, click here.This video is also available on our YouTube channel.", "width": 1024, "height": 576, "pixels": 589824 } }, { "id": 30017, "url": "https://svs.gsfc.nasa.gov/30017/", "page_type": "Hyperwall Visual", "title": "GEOS-5 Nature Run Collection", "description": "Through numerical experiments that simulate the dynamical and physical processes governing weather and climate variability of Earth's atmosphere, models create a dynamic portrait of our planet. This 10-kilometer global mesoscale simulation (Nature Run) using the NASA Goddard Earth Observing System Model (GEOS-5) explores the evolution of surface temperatures as the sun heats the Earth and fuels cloud formation in the tropics and along baroclinic zones; the presence of water vapor and precipitation within these global weather patterns; the dispersion of global aerosols from dust, biomass burning, fossil fuel emissions, and volcanoes; and the winds that transport these aerosols from the surface to upper-levels.The full GEOS-5 simulation covered 2 years—from May 2005 to May 2007. It ran on 3,750 processors of the Discover supercomputer at the NASA Center for Climate Simulation, consuming 3 million processor hours and producing over 400 terabytes of data. GEOS-5 development is funded by NASA's Modeling, Analysis, and Prediction Program. || ", "release_date": "2013-03-07T00:00:00-05:00", "update_date": "2025-02-02T00:23:53.579676-05:00", "main_image": { "id": 428701, "url": "https://svs.gsfc.nasa.gov/vis/a030000/a030000/a030017/geos5_fires_tour_zoom_svs030017_print.jpg", "filename": "geos5_fires_tour_zoom_svs030017_print.jpg", "media_type": "Image", "alt_text": "A zoomed in version of aerosols and fires on a rotating globe.", "width": 1024, "height": 574, "pixels": 587776 } } ], "sources": [], "products": [], "newer_versions": [], "older_versions": [], "alternate_versions": [] }