HDF data manipulation software (applications to open a Hierarchical Data Format (HDF) file and display a browse image and/or data file information) HDF Science Data Set (SDS) Information Tool Overview ĭiscussion of the Coastal Water Percentage IssueĪSDC List of CERES Examples: Spatial Extent and Scan ModesĬERES Single Scanner Footprint TOA/Surface Fluxes and Clouds (SSF) Data Set Abstract.Overview of view hdf: A Visualization and Analysis Tool for HDF FilesĪLGORITHM THEORETICAL BASIS DOCUMENT (ATBD) The newest CERES instrument (FM6) was launched on board the Joint Polar-Orbiting Satellite System 1 (JPSS-1) satellite, now called NOAA-20, on November 18, 2017.
The CERES FM5 instrument was launched on board the Suomi National Polar-orbiting Partnership (NPP) satellite on October 28, 2011. Two additional CERES instruments (FM3 and FM4) were launched on board Earth Observing System (EOS) Aqua on May 4, 2002. Two CERES instruments (FM1 and FM2) were launched into polar orbit on board the Earth Observing System (EOS) flagship Terra on December 18, 1999. The first CERES instrument, protoflight model (PFM), was launched on Novemas part of the Tropical Rainfall Measuring Mission (TRMM). The CERES missions are a follow-on to the successful Earth Radiation Budget Experiment (ERBE) mission. The CERES instruments provide radiometric measurements of the Earth's atmosphere from three broadband channels.
#Flux window full#
On the SSF, only footprints with adequate imager coverage are included, which are much less than the full set of footprints on the CERES ES-8 product.ĬERES is a key component of the Earth Observing System (EOS) program. These TOA fluxes are used to estimate surface fluxes. The SW, LW, and WN radiances at spacecraft altitude are converted to TOA fluxes based on the imager-defined scene. The SSF also contains the CERES filtered radiances for the total, shortwave (SW), and window (WN) channels and the unfiltered SW, longwave (LW), and WN radiances. For each CERES footprint, the SSF contains the number of cloud layers and for each layer the cloud amount, height, temperature, pressure, optical depth, emissivity, ice and liquid water path, and water particle size. Scene identification and cloud properties are defined at the higher imager resolution and these data are averaged over the larger CERES footprint. The SSF combines instantaneous CERES data with scene information from a higher-resolution imager such as Visible/Infrared Scanner (VIRS) on the Tropical Measuring Mission (TRMM), Moderate-Resolution Imaging Spectroradiometer (MODIS) on Terra and Aqua, and Visible Infrared Imaging Radiometer Suite (VIIRS) on Suomi- National Polar-orbiting Partnership (NPP). The thermal conductivity for glass is typically about k = 1.0 W/m-K and the thickness is about L = 3 mm.CERES SSF TOA/Surface Fluxes are data for a single scanner instrument. Neglect radiation and solve the conduction equation for the temperature difference across the glass for the average heat flux. What reasons would cause the magnitude of heat flux measured values to not be equal?Ĥ. What does it say about the relation between your measured heat flux values?ģ. Apply an energy balance around the window. Why do the heat flux values have opposite sign between the inside and outside of the window?Ģ. Record the steady-state values below and sketch the temperature distribution on the figure. Use the second thermocouple to record the air temperature at the same time. Then repeat for the outside of the window. Measure the heat flux and temperature at steady-state. Mount the heat flux sensor on the inside of the window with the thermocouple on the side next to the glass. Consequently, contrary to popular opinion it is normally much easier to accurately measure heat flux on a surface than temperature. Conversely, the heat flux is typically measured over a much larger area and at steady-state conditions, what goes in must come out. Thermal contact resistance is relatively large, especially for the usual bead thermocouples. Note: It is very difficult to accurately measure the surface temperature of materials when heat transfer is occurring to or from the surface. Where k is the thermal conductivity of the glass and L is the thickness. At steady-state conditions the conduction heat flux is The thermal resistance of the window should be measurable from the heat flux q" and temperature difference across the glass ΔT. This is still the case in the older engineering buildings on our campus.
#Flux window windows#
Many older windows and storm doors use a single pane of glass, typically 1/8 inch thick. Windows are a major source of heat loss in buildings.
0 kommentar(er)
