[1] Blooms of the coccolithophorid Emiliana huxleyi may be sensitive to climate change. A comparison of global Coastal Zone Color Scanner (CZCS, 1978–1986) and Seaviewing Wide Field-of-view Sensor (SeaWiFS, 1997– present) imagery appears to show them advancing into some sub-Arctic seas. To determine when coccolithophore blooms appeared in the Barents Sea this paper makes use of Advanced Very Hi...

This paper presents a new development of the NeuroVaria method. NeuroVaria computes relevant atmospheric and oceanic parameters by minimizing the difference between the observed satellite reflectances and those computed from radiative transfer simulations modelled by artificial neural networks. Aerosol optical properties are computed using the Junge size distribution allowing taking into accoun...

The Ocean Color Monitor (OCM) provides radiance measurements in eight visible and near-infrared bands, similar to the Sea-viewing Wide Field-of-View Sensor (SeaWiFS) but with higher spatial resolution. For smallto moderate-sized coastal lakes and estuaries, where the 1 × 1 km spatial resolution of SeaWiFS is inadequate, the OCM provides a good alternative because of its higher spatial resolutio...

Chlorophyll-a (Chl) concentration in the Taiwan Strait (TWS) and in the South China Sea (SCS) was estimated using time series of satellite data collected with the MODIS/Aqua and SeaWiFS instruments, and validated with in situ measurements from three cruises conducted in winter and summer 2004. For Chl between 0.1 and 10mg m , both SeaWiFS and MODIS agreed well with in situ data. Errors for turb...

The band-by-band vicarious calibration of on-orbit satellite ocean color instruments, such as SeaWiFS and MODIS, using ground-based measurements has significant residual uncertainties. This paper applies spectral shape and population statistics to tune the calibration of the blue bands against each other to allow examination of the interband calibration and potentially provide an analysis of ca...

AR 1: As you kindly suggested, the extension of the SeaWiFS period could strengthen our results. However, we have found that sufficient data are unavailable for statistics during January 2008 and December 2009 (i.e., 7 out of 24 month data are only available in the period. In addition, less than 2 daily data are available per month at the maximum). In particular, because SeaWiFS data from Janua...

This paper presents a first effort in transforming a map of surface chlorophyll, obtained from an ocean color image (SeaWiFS) into a map of primary production of the SE Brazilian coastal region, SW Atlantic. The main steps involved in the computation of the daily primary production integrated in the water column are summarized. In situ primary production experiments provided the biomass-normali...

The SeaWiFS ocean colour sensor on board the SeaStar (Orbview 2) satellite is able to derive the chlorophyll concentration in the surface sea water. The chlorophyll algorithm employed is based on the ratio of radiance or reflectance measured in the blue and green spectral bands. Regression between the band ratio and the in-situ measurements of chlorophyll values gives the coefficients for the r...

Surface chlorophyll a concentrations (Ca, mg m ) in the Southern Ocean estimated from SeaWiFS satellite data have been reported in the literature to be significantly lower than those measured from in situ water samples using fluorometric methods. However, we found that highresolution (∼1 km/pixel) daily SeaWiFS Ca (Ca) data (SeaDAS4.8, OC4v4 algorithm) was an accurate measure of in situ Ca duri...

The seasonal variability of phytoplankton in the Equatorial Atlantic was analysed using Sea-viewing Wide Field-of-view Sensor (SeaWiFS)-derived chlorophyll a (Chl a) concentration data from 1998 to 2001, together with in situ Chl a and primary production data obtained during seven cruises carried out between 1995 and 2000. Monthly averaged SeaWiFS Chl a distributions were in agreement with prev...