Stratus 16 Sixteenth Setting of the Stratus Ocean Reference Station Cruise on Board RV Ronald H. Brown May 5 - 20, 2017 Rodman, Panama - Arica, Chile

The Ocean Reference Station at 20°S, 85°W under the stratus clouds west of northern Chile is being maintained to provide ongoing climate-quality records of surface meteorology, air-sea fluxes of heat, freshwater, and momentum, and of upper ocean temperature, salinity, and velocity variability. The Stratus Ocean Reference Station (ORS Stratus) is supported by the National Oceanic and Atmospheric Administration’s (NOAA) Climate Observation Program. It is recovered and redeployed annually, with past cruises that have come between October and May. This cruise was conducted on the NOAA research vessel Ronald H. Brown. During the 2017 cruise on the Ronald H. Brown to the ORS Stratus site, the primary activities were the recovery of the previous (Stratus 15) WHOI surface mooring, deployment of the new Stratus 16 WHOI surface mooring, in-situ calibration of the buoy meteorological sensors by comparison with instrumentation installed on the ship, CTD casts near the moorings. Surface drifters and ARGO floats were also launched along the track.

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Stratus 17 Seventeenth Setting of the Stratus Ocean Reference Station Cruise on Board RV Cabo de Hornos April 3 - 16, 2018 Valparaiso - Valparaiso, Chile

10.1575/1912/27245 ◽

2021 ◽

Author(s):

Sebastien P. Bigorre ◽

Benjamin Pietro ◽

Alejandra Gubler ◽

Francesca Search ◽

Emerson Hasbrouck ◽

...

Keyword(s):

Reference Station ◽

Mooring Line ◽

Ocean Temperature ◽

Bottom Part ◽

Stratus Clouds ◽

Drifting Buoy ◽

In Situ Calibration ◽

Observation Program ◽

Surface Drifters

The Ocean Reference Station at 20°S, 85°W under the stratus clouds west of northern Chile is being maintained to provide ongoing climate-quality records of surface meteorology, air-sea fluxes of heat, freshwater, and momentum, and of upper ocean temperature, salinity, and velocity variability. The Stratus Ocean Reference Station (ORS Stratus) is supported by the National Oceanic and Atmospheric Administration’s (NOAA) Climate Observation Program. It is recovered and redeployed annually, with past cruises that have come between October and May. This cruise was conducted on the Chilean research vessel Cabo de Hornos. During the 2018 cruise on the Cabo de Hornos to the ORS Stratus site, the primary activities were the recovery of the previous (Stratus 16) WHOI surface mooring, deployment of the new Stratus 17 WHOI surface mooring, in-situ calibration of the buoy meteorological sensors by comparison with instrumentation installed on the ship, CTD casts near the moorings. The Stratus 17 had parted from its anchor site on January 4 2018, so its recovery was done in two separate operations: first the drifting buoy with mooring line under it, then the bottom part still attached to the anchor. Surface drifters and ARGO floats were also launched along the track.

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Unsupervised optimization approach to in situ calibration of collaborative human-robot interaction tools

2020 IEEE International Conference on Multisensor Fusion and Integration for Intelligent Systems (MFI) ◽

10.1109/mfi49285.2020.9235229 ◽

2020 ◽

Author(s):

Bruno Maric ◽

Marsela Polic ◽

Tomislav Tabak ◽

Matko Orsag

Keyword(s):

Human Robot Interaction ◽

Optimization Approach ◽

Robot Interaction ◽

In Situ Calibration

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Performance of the SoLid reactor neutrino detector

EPJ Web of Conferences ◽

10.1051/epjconf/201921908003 ◽

2019 ◽

Vol 219 ◽

pp. 08003

Author(s):

Maja Verstraeten

Keyword(s):

Quality Control ◽

Energy Resolution ◽

Neutrino Detector ◽

Channel Response ◽

In Situ Calibration ◽

Reactor Neutrino ◽

Li Isotope ◽

Better Than

The SoLid Collaboration is currently operating a 1.6 ton neutrino detector near the Belgian BR2 reactor. Its main goal is the observation of the oscillation of electron antineutrinos to previously undetected flavour states. The highly segmented SoLid detector employs a compound scintillation technology based on PVT scintillator in combination with LiF-ZnS(Ag) screens containing the 6Li isotope. The experiment has demonstrated a channel-to-channel response that can be controlled to the level of a few percent, an energy resolution of better than 14% at 1 MeV, and a determination of the interaction vertex with a precision of 5 cm. This contribution highlights the major outcomes of the R&D program, the quality control during component manufacture and integration, the current performance and stability of the full-scale system, as well as the in-situ calibration of the detector with various radioactive sources.

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Absolute calibration of HY-2, Jason-2 and Saral/AltiKa from China in-situ calibration site: Qian Li Yan

2015 IEEE International Geoscience and Remote Sensing Symposium (IGARSS) ◽

10.1109/igarss.2015.7326616 ◽

2015 ◽

Cited By ~ 1

Author(s):

Xinghua Zhou ◽

Lei Yang ◽

Mingsen Lin ◽

Ning Lei ◽

Qiuhua Tang ◽

...

Keyword(s):

Absolute Calibration ◽

In Situ Calibration

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Spreading of warm ocean waters around Greenland as a possible cause for glacier acceleration

Annals of Glaciology ◽

10.3189/2012aog60a136 ◽

2012 ◽

Vol 53 (60) ◽

pp. 257-266 ◽

Cited By ~ 69

Author(s):

E. Rignot ◽

I. Fenty ◽

D. Menemenlis ◽

Y. Xu

Keyword(s):

Initial Conditions ◽

Independent Study ◽

Ocean Temperature ◽

The North ◽

Subsurface Ocean ◽

Subsurface Waters ◽

Glacier Flow ◽

Horizontal Grid ◽

Possible Cause

AbstractWe examine the pattern of spreading of warm subtropical-origin waters around Greenland for the years 1992–2009 using a high-resolution (4km horizontal grid) coupled ocean and sea-ice simulation. The simulation, provided by the Estimating the Circulation and Climate of the Ocean, Phase II (ECCO2) project, qualitatively reproduces the observed warming of subsurface waters in the subpolar gyre associated with changes of the North Atlantic atmospheric state that occurred in the mid-1990s. The modeled subsurface ocean temperature warmed by 1.5˚C in southeast and southwest Greenland during 1994–2005 and subsequently cooled by 0.5˚C; modeled subsurface ocean temperature increased by 2–2.5˚C in central and then northwest Greenland during 1997–2005 and stabilized thereafter, while it increased after 2005 by <0.5˚C in north Greenland. Comparisons with in situ measurements off the continental shelf in the Labrador and Irminger Seas indicate that the model initial conditions were 0.4˚C too warm in the south but the simulated warming is correctly reproduced; while measurements from eastern Baffin Bay reveal that the model initial conditions were 1.0˚C too cold in the northwest but the simulated ocean warming brought modeled temperature closer to observations, i.e. the simulated warming is 1.0˚C too large. At several key locations, the modeled oceanic changes off the shelf and below the seasonal mixed layer were rapidly transmitted to the shelf within troughs towards (model-unresolved) fjords. Unless blocked in the fjords by shallow sills, these warm subsurface waters had potential to propagate down the fjords and melt the glacier fronts. Based on model sensitivity simulations from an independent study (Xu and others, 2012), we show that the oceanic changes have very likely increased the subaqueous melt rates of the glacier fronts, and in turn impacted the rates of glacier flow.

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Validation of Aquarius sea surface salinity with in situ measurements from Argo floats and moored buoys

Journal of Geophysical Research Oceans ◽

10.1002/2014jc010101 ◽

2014 ◽

Vol 119 (9) ◽

pp. 6171-6189 ◽

Cited By ~ 44

Author(s):

Wenqing Tang ◽

Simon H. Yueh ◽

Alexander G. Fore ◽

Akiko Hayashi

Keyword(s):

In Situ Measurements ◽

Sea Surface ◽

Sea Surface Salinity ◽

Surface Salinity ◽

Argo Floats

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Estimating Global Ocean Heat Content Changes in the Upper 1800 m since 1950 and the Influence of Climatology Choice*

Journal of Climate ◽

10.1175/jcli-d-12-00752.1 ◽

2014 ◽

Vol 27 (5) ◽

pp. 1945-1957 ◽

Cited By ~ 55

Author(s):

John M. Lyman ◽

Gregory C. Johnson

Keyword(s):

Heat Content ◽

Ocean Heat Content ◽

Global Ocean ◽

Ocean Temperature ◽

Vertical Separation ◽

Ocean Heat Uptake ◽

Expendable Bathythermograph ◽

Heat Uptake ◽

The Mean

Abstract Ocean heat content anomalies are analyzed from 1950 to 2011 in five distinct depth layers (0–100, 100–300, 300–700, 700–900, and 900–1800 m). These layers correspond to historic increases in common maximum sampling depths of ocean temperature measurements with time, as different instruments—mechanical bathythermograph (MBT), shallow expendable bathythermograph (XBT), deep XBT, early sometimes shallower Argo profiling floats, and recent Argo floats capable of worldwide sampling to 2000 m—have come into widespread use. This vertical separation of maps allows computation of annual ocean heat content anomalies and their sampling uncertainties back to 1950 while taking account of in situ sampling advances and changing sampling patterns. The 0–100-m layer is measured over 50% of the globe annually starting in 1956, the 100–300-m layer starting in 1967, the 300–700-m layer starting in 1983, and the deepest two layers considered here starting in 2003 and 2004, during the implementation of Argo. Furthermore, global ocean heat uptake estimates since 1950 depend strongly on assumptions made concerning changes in undersampled or unsampled ocean regions. If unsampled areas are assumed to have zero anomalies and are included in the global integrals, the choice of climatological reference from which anomalies are estimated can strongly influence the global integral values and their trend: the sparser the sampling and the bigger the mean difference between climatological and actual values, the larger the influence.

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