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Advanced Methods for Characterizing the Immersion Factor of Irradiance Sensors
Publisher: American Meteorological Society
Abstract: Two new immersion factor methods are evaluated by comparing them with the so-called traditional (or incremental) method. For the first method, the optical measurements taken at discrete water depths are substituted by ...
An Evaluation of Oceanographic Radiometers and Deployment Methodologies
Publisher: American Meteorological Society
Abstract: The primary objective of the Sea-viewing Wide Field-of-view Sensor (SeaWiFS) Project is to produce water-leaving radiances within an uncertainty of 5% in clear-water regions, and chlorophyll a concentrations within 35% ...
Calibration Evaluation and Radiometric Testing of Field Radiometers with the SeaWiFS Quality Monitor (SQM)
Publisher: American Meteorological Society
Abstract: One of the goals of calibration and validation programs supporting ocean color satellites is to produce water-leaving radiances with an uncertainty of 5% in clear-water regions. This objective requires field instruments ...
Platform and Environmental Effects on Above-Water Determinations of Water-Leaving Radiances
Publisher: American Meteorological Society
Abstract: A comparison of above- and in-water spectral measurements in Case-1 conditions showed the uncertainty in above-water determinations of water-leaving radiances depended on the pointing angle of the above-water instruments ...
Center of Mass Estimation in Closed Vortices: A Verification in Principle and Practice
Publisher: American Meteorological Society
Abstract: The problem of tracking closed mesoscale vortices using center of mass estimation techniques is studied. Three estimators are evaluated using data from a warm core Gulf Stream ring. The comparisons show that a method based ...
Offshore Tower Shading Effects on In-Water Optical Measurements
Publisher: American Meteorological Society
Abstract: A field campaign was performed to estimate the shading effect induced on in-water irradiance and radiance measurements taken in the immediate vicinity of the Acqua Alta Oceanographic Tower (AAOT), located in the northern ...
An Evaluation of Above- and In-Water Methods for Determining Water-Leaving Radiances
Publisher: American Meteorological Society
Abstract: A high-quality dataset collected at an oceanographic tower was used to compare water-leaving radiances derived from simultaneous above- and in-water optical measurements. The former involved two different above-water systems ...
Radiometric and Engineering Performance of the SeaWiFS Quality Monitor (SQM): A Portable Light Source for Field Radiometers
Publisher: American Meteorological Society
Abstract: A portable and stable source of radiant flux, the Sea-viewing Wide Field-of-view Sensor (SeaWiFS) Quality Monitor (SQM), was developed as a field instrument for use in experiments away from the calibration laboratory such ...