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Abstract: Not Available Category: geoscientificInformation Source: Not Available Supplemental Information: Not Availble Coverage: EVENT LABEL: * LATITUDE: -90.000000 * LONGITUDE: 0.000000
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Abstract: Here we establish a spatio-temporal evolution of the sea-surface temperature anomalies in the North Atlantic over Dansgaard Oeschger (DO) events 5-8 (30-40ka) using the proxy surrogate reconstruction method. We combine fully coupled, general circulation model simulations with planktic foraminifera based sea-surface temperature reconstructions to obtain a broader spatial picture of the ocean state during DO-events 5-8. Here, the model simulations consists of 10 simulations with HadCM3, 8 runs without freshwater forcing and 2 runs with freshwater forcing. These simulations were run by Paul J. Valdes, Joy S. Singarayer and William H.G. Roberts. A description of the simulations can be found in Singarayer and Valdes (2010). All model simulations were run using the University of Bristol's ACRC facilities, (www.acrc.bris.ac.uk). This is the first time the proxy surrogate reconstruction method has been applied to oceanic variability during MIS3. The sea-surface temperature reconstructions should be used with care. Category: geoscientificInformation Source: Not Available Supplemental Information: Not Availble Coverage: Not Available
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Abstract: Not Available Category: geoscientificInformation Source: Not Available Supplemental Information: Netcdf file created from GEOMAR processed glider data. Based on data from file ifm03_depl09_final_gridded.mat . Glider deployment ID : ifm03_depl09 start: 2013-01-27 area: Peru Coverage: EVENT LABEL: * LATITUDE START: -12.439170 * LONGITUDE START: -77.570330 * LATITUDE END: -12.420330 * LONGITUDE END: -77.562000 * DATE/TIME START: 2013-02-28T19:38:00 * DATE/TIME END: 2013-02-28T20:00:59 * ELEVATION START: -485.3 m * ELEVATION END: -449.0 m * LOCATION: South Pacific Ocean * CAMPAIGN: M93 * BASIS: Meteor (1986) * DEVICE: Glider
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Abstract: A large amount of atmospheric and oceanic exchange between the Arctic and lower latitudes take places through the North Atlantic region. We present three dominant modes of large scale atmospheric circulation variability in this region that primarily affects the exchange processes between the Arctic and lower latitudes. Empirical orthogonal function (EOF) analysis of the de-trended monthly sea level pressure (SLP) anomaly from the ECMWF ERA-Interim data shows the first three modes of the variability and their corresponding time series for the period 1993-2016. They are identified as North Atlantic Oscillation (NAO), East Atlantic Pattern (EAP) and Scandanavian Pattern (SCAN) (Chakif et al., 2017). These three modes together explain about 68% (34.3%, 17.3% and 16.4 % respectively) of the total variance in the SLP anomaly and thus can be considered as the primary features of the large scale circulation in this region. Interactions among these three modes also have significant impacts on the regional to remote climate variabilities (Moore et al., 2013). Category: geoscientificInformation Source: Supplement to: Raj, Roshin P; Chatterjee, Sourav; Bertino, Laurent; Turiel, Antonio; Portebella, Marcos (accepted): The Arctic front and its variability in the Norwegian Sea. Ocean Science Supplemental Information: Not Availble Coverage: EVENT LABEL: * LATITUDE: 45.000000 * LONGITUDE: -40.000000 * LOCATION: North Atlantic
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Abstract: Downwelling surface radiative fluxes observed at the meteorological station at Bjørnøya in the Barents Sea. Measurements are made using Kipp and Zonen CMP21 and CGR4 pyranometers and pyrgeometers. Daily maintenance is performed by the meteorological personnel at the station. Data are averaged over the last minute and the time is set to UTC. This data set was originally supported by the Norwegian Research Council but is now continued by the Norwegian Meteorological Institute. The quality control performed is by visual inspection and by comparison of clear sky values against RTM simulations. Originally this station was started as an IPY station funded through iAOOS-Norway and IPY-THORPEX, currently it is continued by METNO. Category: geoscientificInformation Source: Not Available Supplemental Information: Not Availble Coverage: EVENT LABEL: (Bear Island) * LATITUDE: 74.360000 * LONGITUDE: 19.030000 * LOCATION: Bjørnøya, Svalbard archipelago, Norway * METHOD|DEVICE: Multiple investigations
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Abstract: Gravity waves are one of the main drivers of atmospheric dynamics. The spatial resolution of most global atmospheric models, however, is too coarse to properly resolve the small scales of gravity waves, which range from tens to a few thousand kilometers horizontally, and from below 1 km to tens of kilometers vertically. Gravity wave source processes involve even smaller scales. Therefore, general circulation models (GCMs) and chemistry climate models (CCMs) usually parametrize the effect of gravity waves on the global circulation. These parametrizations are very simplified. For this reason, comparisons with global observations of gravity waves are needed for an improvement of parametrizations and an alleviation of model biases. We present a gravity wave climatology based on atmospheric infrared limb emissions observed by satellite (GRACILE). GRACILE is a global data set of gravity wave distributions observed in the stratosphere and the mesosphere by the infrared limb sounding satellite instruments High Resolution Dynamics Limb Sounder (HIRDLS) and Sounding of the Atmosphere using Broadband Emission Radiometry (SABER). Typical distributions (zonal averages and global maps) of gravity wave vertical wavelengths and along-track horizontal wavenumbers are provided, as well as gravity wave temperature variances, potential energies and absolute momentum fluxes. This global data set captures the typical seasonal variations of these parameters, as well as their spatial variations. The GRACILE data set is suitable for scientific studies, and it can serve for comparison with other instruments (ground based, airborne, or other satellite instruments) and for comparison with gravity wave distributions, both resolved and parametrized, in GCMs and CCMs. Category: geoscientificInformation Source: Supplement to: Ern, Manfred; Trinh, Quang Thai; Preusse, Peter; Gille, John C; Mlynczak, Martin G; Russell III, James M; Riese, Martin (2018): GRACILE: a comprehensive climatology of atmospheric gravity wave parameters based on satellite limb soundings. Earth System Science Data, 10(2), 857-892, https://doi.org/10.5194/essd-10-857-2018 Supplemental Information: Not Availble Coverage: Not Available
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Abstract: Not Available Category: geoscientificInformation Source: Not Available Supplemental Information: Netcdf file created from GEOMAR processed glider data. ifm09_depl05 glider data gridded to 1dbar resolution.T, S, O are calibrated, Chl-a and Turbidity as delivered by sensor. Coverage: EVENT LABEL: (Ifm09) * LATITUDE: 5.000000 * LONGITUDE: -23.000000 * DATE/TIME: 2012-11-13T09:00:00 * CAMPAIGN: MSM22 * BASIS: Maria S. Merian * METHOD|DEVICE: Glider
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Abstract: Not Available Category: geoscientificInformation Source: Not Available Supplemental Information: Netcdf file created from GEOMAR processed glider data. ifm02_depl17 glider data gridded to 1dbar resolution. T, S, O are calibrated, Chl-a and Turbidity as delivered by sensor. Coverage: EVENT LABEL: (ifm02) * LATITUDE: 5.000000 * LONGITUDE: -22.983333 * DATE/TIME: 2012-10-30T12:30:00 * CAMPAIGN: MSM22 * BASIS: Maria S. Merian * METHOD|DEVICE: Glider
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Abstract: Not Available Category: geoscientificInformation Source: Not Available Supplemental Information: Netcdf file created from GEOMAR processed glider data.ifm02_depl18 glider data gridded to 1dbar resolution. T, S, O are calibrated, Chl-a and Turbidity as delivered by sensor. Coverage: EVENT LABEL: * LATITUDE: 5.011667 * LONGITUDE: -22.900500 * DATE/TIME: 2012-12-07T09:54:00 * CAMPAIGN: MSM23 * BASIS: Maria S. Merian * METHOD|DEVICE: Glider
Data Types:
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Abstract: Not Available Category: geoscientificInformation Source: Not Available Supplemental Information: Netcdf file created from GEOMAR processed glider data.ifm05_depl06 glider data gridded to 1dbar resolution. T, S, O are calibrated, Chl-a and Turbidity as delivered by sensor. Coverage: EVENT LABEL: * LATITUDE: 5.016833 * LONGITUDE: -22.857667 * DATE/TIME: 2012-12-07T10:51:00 * CAMPAIGN: MSM23 * BASIS: Maria S. Merian * METHOD|DEVICE: Glider
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