By means of fluorescence spectroscopy and nonlinear absorption experiments, excited-state processes of the modified pigments [3-acetyl]-chlorophylla, [31-OH]-bacteriochlorophyl!a and [3-vinyl]-bacteriochlorophyll a were investigated and compared with those of chlorophyll a and bacteriochlorophyll a.

Chlorophylla is a green pigment, used as an indirect measure of lake water quality. Its strong absorption of blue and red light allows for quantification through satellite images, providing better spatial coverage than traditional in-lake samples. However, grid-cell scale imagery must be calibrated spatially using in-lake point samples, presenting a change-of-support problem. This paper present...

Concurrent Level-3 data products from MERIS, MODIS, and SeaWiFS between June 2003 and June 2006 for the East China Seas were compared against each other to evaluate the consistency between the sensors. The atmospheres in these regions is generally turbid, with typical aerosol optical thickness at 865 nm (tau_865) around 0.16, therefore presents a challenge to atmospheric correction. The statist...

Scanning-tunneling-microscope (STM) is an instrument not only used to see individual atoms by imaging, but also used to touch and pick-up the atoms or to hear their vibrations by means of manipulation and spectroscopy [1]. In this perspective, the STM can be considered as the eyes, hands and ears of the scientists connecting our macroscopic world to the exciting atomic and nanoscopic world. Her...