PPT-Land Surface Microwave Emissivity: Uncertainties, Dynamics

Yudong Tian Christa PetersLidard Ken Harrison Sujay Kumar and Sarah Ringerud   httplisgsfcnasagovPMM Sponsored by NASA PMM Program PI C PetersLidard 2 Outline 1 Why does land surface microwave emissivity matter . 1. Microwave power By: Emily Teske. Meteorology. Department of Marine and Environmental Systems. Florida Institute of Technology. Objective. Measure the Emissivity of Wet, Damp, and Dry sand. Compare these measured . emissivities. Jean-Luc . Moncet. P. Liang, J. Galantowicz, G. Uymin, A. Lipton, C. Prigent*, B. Hornbuckle**. Atmospheric and Environmental Research, . Inc.. *LERMA. **Iowa State University. First version of global monthly. Frank Liebmann. Learning Objectives. Learn about the effects of emissivity uncertainty. Learn . test methods to determine emissivity. Help . laboratory customers to determine emissivity. © 2014 Fluke Calibration. Land . Surface Temperature and . Emissivity (LST&E) Products.  . Glynn Hulley, . Simon . Hook. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA. (c) . 2014 . California Institute of Technology. Government sponsorship acknowledged. “God chose the weak things of the world to shame the strong.”. 1 Cor. 1:27. What is Microwave. Microwave Communications. Is simply a high radio frequency link specifically designed to provide signal connection between two specific points.. November 2014 lava flow on Kilauea (USGS Volcano Observatory). (. http://hvo.wr.usgs.gov. ) . Thermal Remote Sensing. Distinguishing materials on the ground using differences in emissivity and temperature. Thermal Infrared . from IASI. AGU Fall Meeting, 14. th. -18. th. December, San Francisco, USA.. Email: diane.knappett@stfc.ac.uk. Diane Knappett, Richard . Siddans. , Brian . Kerridge. ,. Jane . Hurley and Alison Waterfall. What are problem solving classes?. These form a bridge between lecture material, labs and the exam.. In some problem solving classes you will be introduced to material covered in the lab part of the course.. Data Management Lead. mdrewry@itsc.uah.edu. Presented . at the GHRC User Working Group Meeting. September 25-26, . 2014. Presentation Overview. Data Management Group Team. Microwave Data at GHRC. Satellite Microwave Datasets. . with Monte Carlo random trials. Alexander Kramida. National Institute of Standards and Technology,. Gaithersburg, Maryland, USA. . Parameters in atomic codes. Transition matrix elements. Slater parameters. Visible. Wavelength . . . Infrared. Wave number n = 1/. . Microwave. Frequency . =1/t. , . in GHz (since . Hz . is small). Microwave Remote Sensing. Note. :. Different units used for different . Seth Abramczyk. November 19. th. , 2021. Abstract. Accurate knowledge of the optical properties of spacecraft components, especially external components, is critical for proper spacecraft thermal design. The effective emissivity of isogrid (an array of equilateral triangular cavities) is not well understood, which poses a challenge for spacecraft thermal management. In this thesis the effective emissivity of isogrid with a prescribed base temperature and nonisothermal walls is examined. The temperature profile of the cavity’s walls and the overall effective emissivity of the cavity are found using Thermal Desktop with Monte Carlo ray tracing. The effective emissivity’s dependence on the wall height, wall thickness, wall resistance, and surface emissivity are examined. The existence of a critical wall height, and the contributing factors to this critical height, are discussed. Comparisons between isogrid and cavities with different base geometries are made. A variable emissivity isogrid spacecraft radiator concept employing the cavity effect is proposed, and mechanisms for achieving this are discussed.. Guus . Velders. The Netherlands. (. RIVM. ). Guus. . Velders. 2. Focus on Ozone-Depleting Substances. Projections of gases controlled by the Montreal Protocol. CFCs, halons, HCFCs, carbon tetrachloride, methyl chloroform, CH.