Results 81 to 90 of about 393,547 (305)

Ocean color imagery: Coastal zone color scanner [PDF]

open access: yes
Investigations into the feasibility of sensing ocean color from high altitude for determination of chlorophyll and sediment distributions were carried out using sensors on NASA aircraft, coordinated with surface measurements carried out by oceanographic ...
Hovis, W. A.
core   +1 more source

Coordination of Cyanobacterial Nitrate Assimilation and Photosynthesis by a Novel PsbO‐Interacting Protein PirN

open access: yesAdvanced Science, EarlyView.
PirN was identified as a previously uncharacterized PsbO‐interacting protein specifically induced in nitrate‐grown cyanobacteria. Loss of PirN leads to coordinated downregulation of PsbO and the nitrate reductase NarB, causing decreased PSII activity and impaired growth under nitrate conditions. Complementation with either PsbO or NarB largely restores
Chengcheng Huang   +16 more
wiley   +1 more source

Visible and infrared imaging radiometers for ocean observations [PDF]

open access: yes
The current status of visible and infrared sensors designed for the remote monitoring of the oceans is reviewed. Emphasis is placed on multichannel scanning radiometers that are either operational or under development.
Barnes, W. L.
core   +1 more source

Calibration Adjustments to the MODIS Aqua Ocean Color Bands [PDF]

open access: yes, 2012
After the end of the SeaWiFS mission in 2010 and the MERIS mission in 2012, the ocean color products of the MODIS on Aqua are the only remaining source to continue the ocean color climate data record until the VIIRS ocean color products become ...
Meister, Gerhard
core   +1 more source

Self‐Sustaining Piezozyme Platform for Antifouling via Mechanically Triggered Enzymatic Cascade

open access: yesAdvanced Science, EarlyView.
Wave‐powered CeO2/g‐C3N4 piezozyme coating converts ocean motion into an enzymatic H2O2‐to‐ROS cascade, realizing 180‐day eco‐friendly marine antifouling. ABSTRACT Harnessing ubiquitous mechanical energy for catalytic activation offers an emerging pathway toward self‐sustaining environmental protection systems.
Jingyu Wang   +3 more
wiley   +1 more source

Ocean Color Quality Control Masks Contain the High Phytoplankton Fraction of Coastal Ocean Observations

open access: yesRemote Sensing, 2019
Satellite estimation of oceanic chlorophyll-a content has enabled characterization of global phytoplankton stocks, but the quality of retrieval for many ocean color products (including chlorophyll-a) degrades with increasing phytoplankton biomass in ...
Henry F. Houskeeper, Raphael M. Kudela
doaj   +1 more source

Results from the National Aeronautics and Space Administration remote sensing experiments in the New York Bight, 7-17 April 1975 [PDF]

open access: yes
A cooperative operation was conducted in the New York Bight to evaluate the role of remote sensing technology to monitor ocean dumping. Six NASA remote sensing experiments were flown on the C-54, U-2, and C-130 NASA aircraft, while NOAA obtained ...
Hall, J. B., Jr., Pearson, A. O.
core   +1 more source

Simulation of Future Geostationary Ocean Color Images

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2012
The objective of this work is to simulate global images that would be provided by a theoretical ocean color sensor on a geostationary orbit at longitude 0, in order to assess the range of radiance value data reaching the sensor throughout the day for 20 spectral bands similar to those of the Ocean and Land Color Imager (OLCI).
Lei, Manchun   +5 more
openaire   +3 more sources

Single‐Cell Transcriptomic Atlases of Camels and Cattle Unravel Molecular Evolution of Digestive and Metabolic Systems

open access: yesAdvanced Science, EarlyView.
We generated multi‐tissue single‐cell transcriptomic atlases of camels and cattle, uncovering conserved and lineage‐specific cellular features across digestive and metabolic systems. Cross‐species comparisons revealed the evolutionary origin of the camel glandular sac and identified novel cell populations linked to physiological specialization ...
Tao Shi   +22 more
wiley   +1 more source

Generalization Performance of Neural Mapping Schemes for the Space–Time Interpolation of Satellite-Derived Ocean Color Datasets

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Neural mapping schemes have become appealing approaches to deliver gap-free satellite-derived products for sea surface tracers. The generalization performance of these learning-based approaches naturally arises as a key challenge.
Thi Thuy Nga Nguyen   +3 more
doaj   +1 more source

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