Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 18 of 18 for “"Misr"”.
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Satellite Cloud Detection With Shortwave Channels: Algorithms, MISR Applications, and Three-Dimensional Radiative Effects
… NASA's Multi-angle Imaging SpectroRadiometer (MISR) mission. This algorithm is now in operational use at the NASA Langley Distributed Active Archive Center (DAAC) by the MISR cloud, land, and aerosol remote sensing algorithms. The theoretical study is on the impacts of 3-D radiative effects on …
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40 Years Global Estimation of Aerosol Optical Depth Profiles Using MISR and TOMS Aerosol Products
… has been verified for TOMS aerosol index and MISR aerosol optical depth for various sites. In this study, the linear relation has been used to cross calibrate the aerosol index data at 380nm from TOMS on-board Nimbus 7 and Earth Probe to aerosol optical depth at 550nm. Data gaps exist in both …
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An Investigation of the Relationship Between Low Cloud Cover And Lower Tropospheric Stability Using MISR
… from the Multiangle Imaging Spectroradiometer (MISR). The MISR data allow for improved cloud top height and cloud cover retrievals for low clouds compared to all other passive sensors. From MISR daily data, two-dimensional histograms of cloud fraction and cloud top height at 500 m vertical …
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Examination of the behavior of modis-retrieved cloud droplet effective radius through misr-modis data fusion
… the bias in MODIS-retrieved Re through MISR-MODIS data fusion revealed biases in the zonal-mean values of MODIS-retrieved Re that varied from 2 to 11 µm, depending on latitude [Liang et al., 2015]. Here, in a push towards bias-correction of MODIS-retrieved Re, we further examine the bias …
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Validation, trend analysis & bias reduction through satellite fusion of the cloud-top height record from terra MODIS & MISR
… of the Multiangle Imaging Spectroradiometer (MISR) and the Moderate Resolution Imaging Spectroradiometer (MODIS), on board the Terra satellite. The stable orbit ensured that Terra MODIS and MISR climate records were not aliased by diurnal and other spurious modes of variability that could …
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Global perspectives on the plane-parallel nature of oceanic water clouds using data synergy from MISR and MODIS
… from the Multiangle Imaging SpectroRadiometer (MISR) and the Moderate Resolution Imaging Spectroradiometer (MODIS). Eight years of data for the months of January and July were examined to determine (1) the angular anisotropy in the upwelling radiation captured by multi-angle observations and its …
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Three-dimensional cloud volume reconstruction from the Multi-angle Imaging SpectroRadiometer
… The Multi-angle Imaging SpectroRadiometer (MISR) is on board the Terra satellite, in its 17th year of operation as of 2017. MISR provides nine views of the same scene that allow scientists to visualize the 3-D structure of observed clouds to a certain extent. Taking advantage of such …
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A Radiative Analysis of Angular Signatures and Oblique Radiance Retrievals Over the Polar Regions From the Multi-Angle Imaging Spectroradiometer
… ice surface reflectance models in MODTRAN using MISR observations as model restraints. The Lambertian model is shown to underpredict BRF values in the blue and green bands unless au unrealistically thick aerosol layer is included. The Hapke 3-Parameter Model contained several programming errors …
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Cloud Observations From Eos-Terra: From Conception to Interpretation of Cloud Climatologies With a Focus on Small Clouds
Global comparison between the MISR and MODIS cloud masks shows large discrepancies over regions dominated by small clouds. This discrepancy was further explored using an ASTER dataset at 15m resolution over the tropical western Atlantic. On average, MODIS and MISR overestimate cloud fraction by 18% …
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Investigating Elevated Aqua Modis Aerosol Optical Depth Retrievals Over The Mid-Latitude Southern Oceans
… and Multi-angle Imaging SpectroRadiometer (MISR) products. In this study, Aqua MODIS (AM) aerosol products in this zonal region are investigated in detail to assess retrieval accuracy. This is done through multiple data sets, including spatially and temporally collocated cloud and aerosol …
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Increases and decreases in the fine mode fraction of aerosol optical depth with increasing relative humidity
… <= 0.7 um) sized particles as a defined by MISR (Multi-Angle Imaging SpectroRadiometer) to the Aerosol Optical Depth (AOD) is correlated to the AERONET (Aerosol Robotic Network) fine mode fraction of AOD. According to this thesis the contribution of particles having radius <= 0.7 um to the …
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Evaluating and Correcting the Effect of Sensor Spatial Resolution on Cloud Fraction Derived from Satellite Instruments
… (Radiometric Camera-by-camera Cloud Mask) of the MISR (Multi-angle Imaging Spectro-Radiometer) instrument, which has spatially and temporally overlapped observations with ASTER. We applied the pattern recognition technique to correct a CF climatology in the tropical Western Atlantic dominated by …
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The impact of vertical variations of cloud mircrophysics and drizzle on the angular anisotropic behavior of weighted cloud droplet effective radius
… from the Multi-angle Imaging SpectroRadiometer (MISR). Both datasets show a zonally varying zonal mean bias in MODIS-retrieved Re of ~3 to 11 μm for marine liquid water clouds. The source of this bias remains a point of research, but it is certainly rooted in the assumptions used by the MODIS …
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Evaluating the capabilities of modern machine learning techniques for operational over-ocean cloud masking with satellite imagers
… the Terra Multi-angle Imaging Spectroradiometer (MISR). The retrained CNN continued to excel, demonstrating its adaptability with an accuracy of ~91%. Although these convolutional models show promising results, their complexity poses challenges regarding explainability. We discuss potential …
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Satellite constraints on surface concentrations of particulate matter
… from several satellite instruments (MODIS, MISR, CALIOP) and surface network sites (IMPROVE, SEARCH, AERONET). We find that the strong summertime enhancement in satellite-observed aerosol optical depth (factor 2-3 enhancement over wintertime AOD) is not present in surface mass concentrations …
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Development and verification of the NASA Multi-Angle Imager for Aerosols operational cloud mask
The National Aeronautics and Space Administration (NASA) Multi-Angle Imager for Aerosols (MAIA) instrument is set to launch in 2022 with the mission of quantifying the epidemiological relationships between aerosols and human health. The MAIA instrument's primary product is a level 2 aerosol …
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The macrophysical properties of shallow cumulus clouds from moderate- and high-resolution satellite data collected over the tropical western Pacific
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2025-08-01
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Manufacturing and In-Field Testing Techniques
L'abstract è presente nell'allegato / the abstract is in the attachment