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  • Abstract: Not Available Category: geoscientificInformation Source: Not Available Supplemental Information: Not Availble Coverage: EVENT LABEL: * LATITUDE: 41.534985 * LONGITUDE: -70.641330 * LOCATION: Woods Hole, USA * METHOD/DEVICE: Sampling river
    Data Types:
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    • Dataset
  • Abstract: Antarctic precipitation is the main positive component in the surface mass balance of the Antarctic ice sheet, thus it is closely related to the evolution of the sea level worldwide. The lack of observations, at both surface and the vertical structure, have hindered the understanding of this important component. Recently a study of the vertical structure of the precipitation in Antarctica have been carried out using micro rain radar (MRR) observations (Durán-Alarcón et al., 2019, TC) at two different sites: Dumont d'Urville (DDU) and Princess Elisabeth (PE) stations. The present collection consists in 2-years of vertical profiles of effective reflectivity (Ze), mean Doppler velocity (W), spectral width (SW) and snowfall rate (S) derived from a K-band vertically-pointing micro rain radar (MRR), obtained at DDU in the framework of the Antarctic Precipitation Remote Sensing from Surface and Space project (APRES3). The observation range of the profiles is between 300 m and 3 km above ground level, with 100m and 1h of vertical and temporal resolutions, respectively. Vertical profiles were separated into surface precipitation and virga (i.e., precipitation that completely sublimes before reaching the surface) to evaluate the impact of virga on the structure of the vertical profiles. The strong katabatic winds blowing at DDU induce a decrease in Ze near to the ground due to the sublimation of the snowfall particles, and the W and SW increases as the height decreases. It was observed that virga is a frequent phenomenon at DDU, since more than a third (36%) of the profiles of precipitation observed with MRR corresponded to virga cases (more details in Durán-Alarcón et al., 2019, TC). This unique dataset of Antarctic precipitation observations in the low troposphere represents a great opportunity to better understand the current numerical models and satellite observations. Category: geoscientificInformation Source: Supplement to: Durán-Alarcón, Claudio; Boudevillain, Brice; Genthon, Christophe; Grazioli, Jacopo; Souverijns, Niels; van Lipzig, Nicole P M; Gorodetskaya, Irina V; Berne, Alexis (2019): The vertical structure of precipitation at two stations in East Antarctica derived from micro rain radars. The Cryosphere, 13(1), 247-264, https://doi.org/10.5194/tc-13-247-2019 Supplemental Information: Not Availble Coverage: EVENT LABEL: * LATITUDE: -66.666700 * LONGITUDE: 140.016700 * LOCATION: Adelie Land * METHOD/DEVICE: Research station
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  • Abstract: Here we provide a 10x10km grid of monthly surface elevation changes (SEC) of the Antarctic Ice Sheet from our multi-mission satellite altimetry combination. Covering the period 1978-2017, the contributing satellite missions (Seasat, Geosat, ERS-1, ERS-2, Envisat, ICESat and CryoSat-2) provided measurements up to their specific maximum latitude (from 72°S for Seasat and Geosat up to 88°S for CryoSat-2). After a consistent reprocessing and a stepwise calibration of the inter-mission offsets, we obtain monthly grids of multi-mission SEC with respect to the reference epoch 09/2010. Validation results are presented in the related publication and prove that the different missions and observation modes have been successfully combined to a seamless multi-mission time series. For coastal East Antarctica, even Seasat and Geosat provide reliable information and, hence, allow to analyze four decades of elevation changes. The uncertainty estimates, provided for each data point, comprise the altimeter measurement noise, the uncertainty due to the generation of the time series, the error estimate of the inter-mission offsets and the variation in the final gridding procedure. These uncertainty estimates range from about a decimeter at the plateau up to more than a meter in coastal areas and also contain a temporal component, causing the larger uncertainties with increasing temporal distance to our reference period (09/2010). Category: geoscientificInformation Source: Supplement to: Schröder, Ludwig; Horwath, Martin; Dietrich, Reinhard; Helm, Veit; van den Broeke, Michiel R; Ligtenberg, Stefan R M (2019): Four decades of Antarctic surface elevation changes from multi-mission satellite altimetry. The Cryosphere, 13(2), 427-449, https://doi.org/10.5194/tc-13-427-2019 Supplemental Information: Not Availble Coverage: EVENT LABEL: * LATITUDE START: -90.000000 * LONGITUDE START: -180.000000 * LATITUDE END: -60.000000 * LONGITUDE END: 180.000000 * DATE/TIME START: 1978-07-01T00:00:00 * DATE/TIME END: 2017-12-31T23:59:59 * METHOD/DEVICE: Satellite altimetry
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    • Software/Code
    • Dataset
  • Abstract: Not Available Category: geoscientificInformation Source: Not Available Supplemental Information: Global black carbon, organic carbon, and sulphur dioxide (BC, OC, SO2) emissions from biomass burning simulated for the late preindustrial Holocene (1770 CE) by the LPJ-LMfire Dynamic Global Vegetation Model (Pfeiffer et al., 2013). For full details of the simulation protocol and the emission factors, see Hamilton, et al. (2017, pages 8-9). Data are provided as a netCDF classic-format file, on a global 0.5-degree, pixel-centered grid (720 cols x 360 rows). The emissions of BC, OC, and SO2 are provided in units of kg m-2 s-1. Coverage: Not Available
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    • Dataset
  • 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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    • Software/Code
    • Dataset
  • 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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    • Dataset
  • 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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    • Software/Code
    • Dataset
  • 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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    • Software/Code
    • Dataset
  • 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
    Data Types:
    • Software/Code
    • Dataset
  • 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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    • Software/Code
    • Dataset
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