Results 21 to 30 of about 2,175 (253)

MODIS Sea Ice Thickness and Open Water–Sea Ice Charts over the Barents and Kara Seas for Development and Validation of Sea Ice Products from Microwave Sensor Data

Remote Sensing, 2017
We have developed algorithms and procedures for calculating daily sea ice thickness (SIT) and open water–sea ice (OWSI) charts, based on the Moderate Resolution Imaging Spectroradiometer (MODIS), ice surface temperature (IST) (night-time only), and ...
Marko Mäkynen, Juha Karvonen
doaj   +1 more source

Paleo ice flow and subglacial meltwater dynamics in Pine Island Bay, West Antarctica [PDF]

The Cryosphere, 2013
Increasing evidence for an elaborate subglacial drainage network underneath modern Antarctic ice sheets suggests that basal meltwater has an important influence on ice stream flow.
F. O. Nitsche, K. Gohl, R. D. Larter, C.-D. Hillenbrand, G. Kuhn, J. A. Smith, S. Jacobs, J. B. Anderson, M. Jakobsson   +8 more
doaj   +1 more source

Assessing the impact of future altimeter constellations in the Met Office global ocean forecasting system [PDF]

Ocean Science
Satellite altimeter measurements of sea surface height (SSH) are a crucial component of current operational ocean forecasting systems. The launch of the Surface Water and Ocean Topography (SWOT) wide-swath altimeter (WiSA) mission is bringing a step ...
R. R. King, M. J. Martin, L. Gaultier, J. Waters, C. Ubelmann, C. Donlon   +5 more
doaj   +1 more source

SWATH: Calm seas for oceanography

Eos, Transactions American Geophysical Union, 1985
Members of the University National Oceanographic Laboratory System (UNOLS) are scheduled to meet this fall in workshops across the country to review 11 conceptual designs for four classes of vessels. From among these designs, UNOLS hopes to realize, by the mid‐1990s, four new large vessels, the first of the new generation of research ships to usher ...
openaire   +1 more source

Measuring Winds and Currents with Ka-Band Doppler Scatterometry: An Airborne Implementation and Progress towards a Spaceborne Mission

Remote Sensing, 2020
Ocean surface winds and currents are tightly coupled, essential climate variables, synoptic measurements of which require a remote sensing approach.
Alexander Wineteer, Dragana Perkovic-Martin, Raquel Monje, Ernesto Rodríguez, Tamás Gál, Noppasin Niamsuwan, Fabien Nicaise, Karthik Srinivasan, Chad Baldi, Ninoslav Majurec, Bryan Stiles   +10 more
doaj   +1 more source

Quantifying Multifrequency Ocean Altimeter Wind Speed Error Due to Sea Surface Temperature and Resulting Impacts on Satellite Sea Level Measurements

Remote Sensing, 2023
Surface wind speed measurements from a satellite radar altimeter are used to adjust altimeter sea level measurements via sea state bias range correction.
Ngan Tran, Douglas Vandemark, François Bignalet-Cazalet, Gérald Dibarboure   +3 more
doaj   +1 more source

Improved method for retrieving Arctic summer sea ice velocity based on FY-3D/MWRI brightness temperatures

International Journal of Digital Earth
Rapid decline in Arctic summer sea ice cover has brought new opportunities for shipping and resource exploitation in the Arctic, and accurate determination of summer sea ice conditions has become increasingly important. Knowledge of sea ice velocity (SIV)
Qian Shi, Fei Shi, Rui Xu, Matti Leppäranta, Xiaochun Zhai, Jiping Liu, Qinghua Yang   +6 more
doaj   +1 more source

SWATH- A new concept for the Safety and Security at Sea

Ciencia y tecnología de buques, 2015
SWATH means Small Waterplane Area Twin Hull and is guarantor for excellent sea keeping behaviour.The basis of this ship type was born in the 1960’s and 70’s when semi-submersible vessels were introduced to the offshore market. Naval architects developed these vessels further and it was used as navy test craft, pilot tender, yachts, passenger boats etc ...
openaire   +2 more sources

Operational SAR-based sea ice drift monitoring over the Baltic Sea [PDF]

Ocean Science, 2012
An algorithm for computing ice drift from pairs of synthetic aperture radar (SAR) images covering a common area has been developed at FMI. The algorithm has been developed based on the C-band SAR data over the Baltic Sea. It is based on phase correlation
J. Karvonen
doaj   +1 more source

Overlapping-calibration of wide-swath altimeter baseline errors using two satellites formation flying design

Frontiers in Marine Science, 2022
The sea surface height (SSH) measured by future wide-swath altimetry satellites contains observation error due to baseline measurement, which is called SSH_Error_Baseline.
Chunyong Ma, Chunyong Ma, Xuan Wang, Zhanwen Gao, Zheng Li, Chaofang Zhao, Chaofang Zhao, Ge Chen, Ge Chen   +8 more
doaj   +1 more source