Yanqun Pan

ARCTUS

This presentation addresses the vicarious calibration and atmospheric correction of the Watersat Imaging Spectrometer Experiment (WISE) from measuring in situ water-leaving reflectance to validating remotely sensed water-leaving reflectance.

This presentation highlights the importance of system vicarious calibration for airborne imaging spectroscopy. It details the procedure, starting with in situ calculation of water leaving reflectance, modelization of at-sensor reflectance, determination of system vicarious calibration gains, and validation of atmospheric correction.

Atmospheric correction of satellite optical imagery over inland waters is a key remaining challenge in aquatic remote sensing. This is due to numerous confounding factors such as the complexity of water optical properties, the surface glint, the heterogeneous nature of atmospheric aerosols, and the proximity of bright land surfaces. This combinatio...

The data acquisition and initial spectroradiometric assessment of an airborne hyperspectral data set acquired with the novel WISE sensor for the mapping of a shallow aquatic environment in the Gulf of St. Lawrence is described.

Phytoplankton species composition research is key to understanding phytoplankton ecological and biogeochemical functions. Hyperspectral optical sensor technology allows us to obtain detailed information about phytoplankton species composition. In the present study, a transfer learning method to inverse phytoplankton species composition using in sit...

The continental shelf seas of China (CSSC) broadly encompass the Bohai Sea, the Yellow Sea, and the East China Sea and exhibit highly variable optical properties. Accurate satellite estimates of particulate organic carbon (POC) remain challenging because optimal proxies for remotely sensed POC are largely obscure in these optically complex coastal...

In this study, cross-comparisons of the reflectance at the top of atmosphere (ρTOA), atmospherically corrected water-leaving reflectance (Rrs), and suspended sediment matter (SPM) concentration derived from three high spatial resolution sensors (Landsat-8/OLI, Sentinel-2A/MSI and GF-1/WFV) were conducted. The purpose was to examine the consistency...

Phytoplankton in the ocean are extremely diverse. The abundance of various intracellular pigments are often used to study phytoplankton physiology and ecology, and identify and quantify different phytoplankton groups. In this study, phytoplankton absorption spectra (a ph (λ)) derived from underway flow-through AC-S measurements in the Fram Strait a...

Suspended particulate matter (SPM) concentrations ([SPM]) in the Yangtze estuary, which has third-order bifurcations and four outlets, exhibit large spatial and temporal variations. Studying the characteristics of these variations in [SPM] is important for understanding sediment transport and pollutant diffusion in the estuary as well as for the co...

Remote sensing-based retrieval of the concentrations of water components relies largely on the accuracy of the atmospheric correction. Although a variety of atmospheric correction algorithms have been developed for turbid waters, the water-leaving reflectance is still underestimated in extremely turbid waters, such as in the Changjiang (Yangtze) es...