Building Intuition for In-Water Optics and Ocean Color Remote Sensing: Spectrophotometer Activity with littleBits™

Water Optics and Water Colour Remote Sensing

The editorial paper aims to highlight the main topics investigated in the Special Issue (SI) “Water Optics and Water Colour Remote Sensing”. The outcomes of the 21 papers published in the SI are presented, along with a bibliometric analysis in the same field, namely, water optics and water colour remote sensing. This editorial summarises how the research articles of the SI approach the study of...

Bayesian Methodology for Ocean-color Remote Sensing

The inverse ocean color problem, i.e., the retrieval of marine reflectance from top-of-atmosphere (TOA) reflectance, is examined in a Bayesian context. The solution is expressed as a probability distribution that measures the likelihood of encountering specific values of the marine reflectance given the observed TOA reflectance. This conditional distribution, the posterior distribution, allows ...

In-water Instrumentation and Platforms for Ocean Color Remote Sensing Applications

Portable Color Spectrophotometer Measurements of Cotton Color in Remote Locations

The Uster ® High Volume Instrument (HVI ®) is used in the U.S. to classify cotton, including cotton color. The cotton color parameters measured on the HVI are Rd (diffuse reflectance) and +b (yellow-ness). Comments from industry have indicated that some cotton bales appeared to have changed significantly in +b (yellowness) from their initial HVI color measurements. As a result of these reports,...

Ocean Remote Sensing with GPS

Mesoscale ocean eddies, analogous to atmospheric storms, are thought to play a very significant role in the transport of momentum, heat, salt, nutrients, and other chemical properties of the ocean. At present, quantifying the role of mesoscale eddies in the ocean circulation and therefore climate variability cannot be done simply because their spatio-temporal structures are not resolved by the ...