Nighttime polar cloud detection with modis
Webb15 aug. 2004 · Nighttime polar cloud detection with MODIS @article{Liu2004NighttimePC, title={Nighttime polar cloud detection with MODIS}, author={Yinghui Liu and Jeffrey R. Key and Richard A. Frey and Steven A. Ackerman and W. Paul Menzel}, journal={Remote Sensing of Environment}, year={2004}, volume= {92 ... Webbtype structure to analyze MODIS five-channel sensor data for 0.65, 1.6, 3.75, 11, and 12 µm together with the predicted clear sky values to identify clouds and snow and ice. …
Nighttime polar cloud detection with modis
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Webb1 juni 2012 · The longest global remotely sensed cloud imagery record is from the Advanced Very High Resolution Radiometer (AVHRR), located on the National Oceanic and Atmospheric Administration (NOAA) polar-orbiting satellites. The 5-channel AVHRR record begins in 1981, while the 4-channel record goes back to 1978. WebbCloud detection is the first step in studying the role of polar clouds in the global climate system with satellite data. In this paper, the cloud detection algorithm for the Moderate …
WebbWith the new cloud detection procedure, the misidentification of cloud as clear decreases from 44.2% to 16.3% at the two Arctic stations, and from 19.8% to 2.7% at the Antarctic … Webb1 feb. 2024 · Reliable measures of nighttime atmospheric fine particulate matter (PM2.5) concentrations are essential for monitoring their continuous diurnal variation. Here, we proposed a night PM2.5 concentration estimation (NightPMES) model based on the random forest model. This model integrates the radiance of the Visible Infrared Imaging …
Webb15 aug. 2004 · It will be shown that nighttime cloud detection in polar regions with MODIS can achieve a high level of accuracy and is far more robust than what may be … WebbAbstract. Cloud detection is the first step in studying the role of polar clouds in the global climate system with satellite data. In this paper, the cloud detection algorithm for the …
WebbResults show that the current MODIS cloud mask algorithm performs well in polar regions during the day but does not detect more than 40% of the cloud cover over the …
WebbCloud detection is the first step in studying the role of polar clouds in the global climate system with satellite data. In this paper, the cloud detection algorithm for the Moderate … the zoo san diego animal planetWebbIn this paper, the cloud detection algorithm for the Moderate Resolution Imaging Spectrometer (MODIS) is evaluated with model simulations and satellite data collocated with radar/lidar observations at three Arctic and Antarctic stations. sage air fryer oven john lewisWebb21 nov. 2008 · The daytime method uses the 0.65-, 3.8-, 10.8-, and 12.0-mum channels on the TRMM Visible and Infrared Scanner (VIRS) and the Terra and Aqua MODIS. The VIRS and Terra 1.6-mum channel and the Aqua 1.38- and 2.1-mum channels are used secondarily. The primary nighttime radiances are from the 3.8-, 10.8-, and 12.0- mum … the zoosWebbIn this paper, the cloud detection algorithm for the Moderate Resolution Imaging Spectrometer (MODIS) is evaluated with model simulations and satellite data collocated with radar/lidar observations at three Arctic and Antarctic stations. sage alerts and workflow connectionsWebb1 aug. 2024 · A shortcoming of our fog/low-cloud detection algorithm is that MODIS or other infrared measurements cannot probe through multilayered clouds. Also, the CALIPSO ’s lidar signal that we use for validation is … sage alerts and workflow downloadWebbPolar Cloud and Snow Detection Two Aqua MODIS granules, covering part of the Arctic Ocean in daylight, and twilight and nighttime over Alaska, are shown in Fig. 5. All three polar masks were applied in this case. CMCM_Ed3 compares well with the MODIS RGB and 3.7 - 11 images. the zoo schoolWebbErrors in cloud detection over the Arctic using a satellite imager and implications for observing feedback mechanisms. Journal of Climate, 23 ( 7 ), 1894 – 1907. Liu, Y., Key, J. R., Frey, R. A., Ackerman, S. and Menzel, P. ( 2004 ). … sageal acesso professor