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https://erddap.emodnet-physics.eu/erddap/tabledap/ZENODO_3250980 https://erddap.emodnet-physics.eu/erddap/tabledap/ZENODO_3250980.graph https://erddap.emodnet-physics.eu/erddap/files/ZENODO_3250980/ Dissolved seawater chromium (Cr) concentrations and stable isotope compositions measured on samples collected with a trace metal clean rosette system in the Southern Ocean Dissolved seawater chromium (Cr) concentrations and stable isotope compositions measured on samples collected with a trace metal clean rosette system in the Southern Ocean. Stations TM 7 to TM 12 reflect a north-south transect from Hobart, Tasmania to Mertz Glacier in Antarctica. Stations TM 14 and TM 15 neighbour the Balleny Islands. Stations TM 18 and TM 20 are located in the Drake Passage. Water samples were collected down to a depth of 1000 metres. The water was filtered in a class 100 clean container aboard the ship through pre-rinsed Supor Acropak capsule filters (0.2 um). Subsequently the samples were acidified and stored at a pH < 2 for several months prior to analysis. Reported values therefore represent bulk seawater chromium (Cr III and Cr VI). The data was obtained using the double-spike technique.\n\ncdm_data_type = Other\nVARIABLES:\ntime (seconds since 1970-01-01T00:00:00Z)\nlatitude (degrees_north)\nlongitude (degrees_east)\ntrace_metal_rosette_cast_number\nace_event_number\nace_sample_number\ndepth (m)\nchromium_concentration\nd53Cr\ninternal_error\n https://erddap.emodnet-physics.eu/erddap/metadata/fgdc/xml/ZENODO_3250980_fgdc.xml https://erddap.emodnet-physics.eu/erddap/metadata/iso19115/xml/ZENODO_3250980_iso19115.xml https://erddap.emodnet-physics.eu/erddap/info/ZENODO_3250980/index.htmlTable https://doi.org/10.5281/zenodo.3250980 (external link) http://erddap.emodnet-physics.eu/erddap/rss/ZENODO_3250980.rss https://erddap.emodnet-physics.eu/erddap/subscriptions/add.html?datasetID=ZENODO_3250980&showErrors=false&email= ETH Zurich, Switzerland ZENODO_3250980
https://erddap.emodnet-physics.eu/erddap/tabledap/EP_ERD_SLD_ANTA_AL_PP_019.subset https://erddap.emodnet-physics.eu/erddap/tabledap/EP_ERD_SLD_ANTA_AL_PP_019 https://erddap.emodnet-physics.eu/erddap/tabledap/EP_ERD_SLD_ANTA_AL_PP_019.graph https://erddap.emodnet-physics.eu/erddap/files/EP_ERD_SLD_ANTA_AL_PP_019/ EMODnet Physics - Collection of Saildrone Antarctica Circumnavigation Surface Data Saildrone Antarctica Circumnavigation Surface Data. Saildrone data from a local source.\n\ncdm_data_type = Trajectory\nVARIABLES:\ntrajectory (Trajectory/Drone ID)\ntime (time in seconds, seconds since 1970-01-01T00:00:00Z)\nlatitude (degrees_north)\nlongitude (degrees_east)\nSOG (Speed over ground, m s-1)\nCOG (Course over ground, degree)\nHDG (Vehicle heading, degree)\nHDG_WING (Wing heading, degree)\nROLL (degree)\nPITCH (degree)\nWING_ANGLE (degree)\nBARO_PRES_MEAN (Air pressure, hPa)\nBARO_PRES_STDDEV (Air pressure SD, hPa)\nTEMP_AIR_MEAN (Air temperature, degree_C)\nTEMP_AIR_STDDEV (Air temperature SD, degree_C)\nRH_MEAN (Relative humidity, percent)\nRH_STDDEV (Relative humidity SD, percent)\nPAR_AIR_MEAN (Photosynthetically active radiation in air, micromol s-1 m-2)\nPAR_AIR_STDDEV (Photosynthetically active radiation in air SD, micromol s-1 m-2)\nTEMP_IR_UNCOR_MEAN (Skin temperature, degree_C)\nTEMP_IR_UNCOR_STDDEV (Skin temperature SD, degree_C)\nUWND_MEAN (Eastward wind speed, m s-1)\nUWND_STDDEV (Eastward wind speed SD, m s-1)\nVWND_MEAN (Northward wind speed, m s-1)\nVWND_STDDEV (Northward wind speed SD, m s-1)\nWWND_MEAN (Downward wind speed, m s-1)\nWWND_STDDEV (Downward wind speed SD, m s-1)\n... (22 more variables)\n https://erddap.emodnet-physics.eu/erddap/metadata/fgdc/xml/EP_ERD_SLD_ANTA_AL_PP_019_fgdc.xml https://erddap.emodnet-physics.eu/erddap/metadata/iso19115/xml/EP_ERD_SLD_ANTA_AL_PP_019_iso19115.xml https://erddap.emodnet-physics.eu/erddap/info/EP_ERD_SLD_ANTA_AL_PP_019/index.htmlTable https://data.saildrone.com/id/2091 (external link) http://erddap.emodnet-physics.eu/erddap/rss/EP_ERD_SLD_ANTA_AL_PP_019.rss https://erddap.emodnet-physics.eu/erddap/subscriptions/add.html?datasetID=EP_ERD_SLD_ANTA_AL_PP_019&showErrors=false&email= Saildrone EP_ERD_SLD_ANTA_AL_PP_019
https://erddap.emodnet-physics.eu/erddap/tabledap/SPI_10_5281_zenodo_3843262 https://erddap.emodnet-physics.eu/erddap/tabledap/SPI_10_5281_zenodo_3843262.graph https://erddap.emodnet-physics.eu/erddap/files/SPI_10_5281_zenodo_3843262/ SPI - Bromine monoxide (BrO) measurements made using a MAX-DOAS (Multi-AXis Differential Optical Absorption Spectroscopy) instrument in the austral summer of 2016/17 during the Antarctic Circumnavigation Expedition (ACE). To achieve the objectives of the project, we installed a MAX-DOAS (Multi-AXis Differential Optical Absorption Spectroscopy) instrument on the vessel “Akademik Tryoshnikov”. This instrument is based on the DOAS technique, which is used to measure trace gas concentrations in the atmosphere. The method consists of the analysis of the spectral absorption lines that each trace gas produces in the solar spectra. The DOAS technique uses the narrowband features that every trace gas has in their spectral absorption coefficients. This differential cross section is unique and acts like a fingerprint for the trace gases, allowing to differentiate between them and to estimate their concentrations (for further details see Platt and Stutz, 2008). In the past decades, atmospheric chemists have come to realize that halogen species (like Cl, Br or I and their oxides ClO, BrO and IO) exert a powerful influence on the chemical composition of the troposphere and through that influence affect the evolution of pollutants, hence having a significant impact on climate. These reactive halogen species are potent oxidizers for organic and inorganic compounds throughout the troposphere. In particular, halogen cycles can act on several compounds (such as methane, ozone, particles…), all of which are climate forcing agents through direct and indirect radiative effects. Dynamic exchange of halogens between ocean, sea ice, snowpack and atmosphere is the main driver for the frequent occurrence of Ozone Depletion Events (ODEs) and Atmospheric Mercury Depletion Events (AMDEs) (Saiz-Lopez and von Glasow, 2012). In this dataset we present the mixing ratio and vertical column density of bromine monoxide (BrO) recorded in the austral summer of 2016/2017 in the Southern Ocean and Atlantic Ocean, averaged over one-hour time periods.\n\ncdm_data_type = Other\nVARIABLES:\ndatetime (Time, seconds since 1970-01-01T00:00:00Z)\nbro_mixing_ratio (parts per trillion)\nbro_mixing_ratio_unc (parts per trillion)\nbro_vcd\nbro_vcd_unc\n https://erddap.emodnet-physics.eu/erddap/info/SPI_10_5281_zenodo_3843262/index.htmlTable https://doi.org/10.5281/zenodo.3843263 (external link) http://erddap.emodnet-physics.eu/erddap/rss/SPI_10_5281_zenodo_3843262.rss https://erddap.emodnet-physics.eu/erddap/subscriptions/add.html?datasetID=SPI_10_5281_zenodo_3843262&showErrors=false&email= SPI SPI_10_5281_zenodo_3843262
https://erddap.emodnet-physics.eu/erddap/tabledap/SPI_10_5281_zenodo_3973198 https://erddap.emodnet-physics.eu/erddap/tabledap/SPI_10_5281_zenodo_3973198.graph https://erddap.emodnet-physics.eu/erddap/files/SPI_10_5281_zenodo_3973198/ SPI - Cold and warm temperature advection mask for the Antarctic Circumnavigation Expedition from December 2016 – March 2017. This dataset contains a mask for the identification of cold and warm temperature advection along the Antarctic Circumnavigation Expedition (ACE) track based on a simple method using the difference between the sea surface and air temperature. This mask is a combination of measured air temperature during ACE and sea surface temperature fields from ECMWF operational analysis data.\n\ncdm_data_type = Other\nVARIABLES:\ntime (seconds since 1970-01-01T00:00:00Z)\nmaskcw_12h\nmaskcw_6h\nmaskcw_all\nfilter_sif\nfilter_lsm\nlatitude (degrees_north)\nlongitude (degrees_east)\n https://erddap.emodnet-physics.eu/erddap/metadata/fgdc/xml/SPI_10_5281_zenodo_3973198_fgdc.xml https://erddap.emodnet-physics.eu/erddap/metadata/iso19115/xml/SPI_10_5281_zenodo_3973198_iso19115.xml https://erddap.emodnet-physics.eu/erddap/info/SPI_10_5281_zenodo_3973198/index.htmlTable https://doi.org/10.5281/zenodo.3989318 (external link) http://erddap.emodnet-physics.eu/erddap/rss/SPI_10_5281_zenodo_3973198.rss https://erddap.emodnet-physics.eu/erddap/subscriptions/add.html?datasetID=SPI_10_5281_zenodo_3973198&showErrors=false&email= Institute for Atmospheric and Climate Science, ETH Zurich, Switzerland SPI_10_5281_zenodo_3973198
https://erddap.emodnet-physics.eu/erddap/tabledap/SPI_10_5281_zenodo_2635685 https://erddap.emodnet-physics.eu/erddap/tabledap/SPI_10_5281_zenodo_2635685.graph https://erddap.emodnet-physics.eu/erddap/files/SPI_10_5281_zenodo_2635685/ SPI - Hydrolysable carbohydrate data collected from the trace metal rosette in the Southern Ocean during the austral summer of 2016/2017, on board the Antarctic Circumnavigation Expedition. Hydrolysable carbohydrate (referred to as TPZT from the analytical methodology used) is part of the labile pool of dissolved organic carbon that is excreted by most (micro)organisms or released by continental margins/sediments. It is a carbon source for heterotrophic bacteria. These carbohydrates could also potentially bind iron and act as an iron binding ligand. This data is used to explore the nature of iron ligands and relate to biological and chemical oceanography.\n\ncdm_data_type = Other\nVARIABLES:\ncruise\nstation_number\nevent_number\nTMR_cast\ntime (seconds since 1970-01-01T00:00:00Z)\nlatitude (degrees_north)\nlongitude (degrees_east)\ndepth (m)\nhydrolysable_carbohydrate_concentration (µmol/L)\n https://erddap.emodnet-physics.eu/erddap/metadata/fgdc/xml/SPI_10_5281_zenodo_2635685_fgdc.xml https://erddap.emodnet-physics.eu/erddap/metadata/iso19115/xml/SPI_10_5281_zenodo_2635685_iso19115.xml https://erddap.emodnet-physics.eu/erddap/info/SPI_10_5281_zenodo_2635685/index.htmlTable https://doi.org/10.5281/zenodo.3967034 (external link) http://erddap.emodnet-physics.eu/erddap/rss/SPI_10_5281_zenodo_2635685.rss https://erddap.emodnet-physics.eu/erddap/subscriptions/add.html?datasetID=SPI_10_5281_zenodo_2635685&showErrors=false&email= University of Geneva, Switzerland SPI_10_5281_zenodo_2635685
https://erddap.emodnet-physics.eu/erddap/tabledap/SPI_10_5281_zenodo_3843375 https://erddap.emodnet-physics.eu/erddap/tabledap/SPI_10_5281_zenodo_3843375.graph https://erddap.emodnet-physics.eu/erddap/files/SPI_10_5281_zenodo_3843375/ SPI - Iodine monoxide (IO) measurements made using a MAX-DOAS (Multi-AXis Differential Optical Absorption Spectroscopy) instrument in the austral summer of 2016/17 during the Antarctic Circumnavigation Expedition (ACE). To achieve the objectives of the project, we installed a MAX-DOAS (Multi-AXis Differential Optical Absorption Spectroscopy) instrument on the vessel “Akademik Tryoshnikov”. This instrument is based on the DOAS technique, which is used to measure trace gas concentrations in the atmosphere. The method consists of the analysis of the spectral absorption lines that each trace gas produces in the solar spectra. The DOAS technique uses the narrowband features that every trace gas has in their spectral absorption coefficients. This differential cross section is unique and acts like a fingerprint for the trace gases, allowing to differentiate between them and to estimate their concentrations (for further details see Platt and Stutz, 2008). In the past decades, atmospheric chemists have come to realize that halogen species (like Cl, Br or I and their oxides ClO, BrO and IO) exert a powerful influence on the chemical composition of the troposphere and through that influence affect the evolution of pollutants, hence having a significant impact on climate. These reactive halogen species are potent oxidizers for organic and inorganic compounds throughout the troposphere. In particular, halogen cycles can act on several compounds (such as methane, ozone, particles…), all of which are climate forcing agents through direct and indirect radiative effects. Dynamic exchange of halogens between ocean, sea ice, snowpack and atmosphere is the main driver for the frequent occurrence of Ozone Depletion Events (ODEs) and Atmospheric Mercury Depletion Events (AMDEs) (Saiz-Lopez and von Glasow, 2012). In this dataset we present the mixing ratio and vertical column density of iodine monoxide (IO) recorded in the austral summer of 2016/2017 in the Southern Ocean and Atlantic Ocean, averaged over one-hour time periods.\n\ncdm_data_type = Other\nVARIABLES:\ndatetime (Time, seconds since 1970-01-01T00:00:00Z)\nio_mixing_ratio (parts per trillion)\nio_mixing_ratio_unc (parts per trillion)\nio_vcd\nio_vcd_unc\n https://erddap.emodnet-physics.eu/erddap/info/SPI_10_5281_zenodo_3843375/index.htmlTable https://doi.org/10.5281/zenodo.3843376 (external link) http://erddap.emodnet-physics.eu/erddap/rss/SPI_10_5281_zenodo_3843375.rss https://erddap.emodnet-physics.eu/erddap/subscriptions/add.html?datasetID=SPI_10_5281_zenodo_3843375&showErrors=false&email= SPI SPI_10_5281_zenodo_3843375
https://erddap.emodnet-physics.eu/erddap/tabledap/SPI_10_5281_zenodo_3922146 https://erddap.emodnet-physics.eu/erddap/tabledap/SPI_10_5281_zenodo_3922146.graph https://erddap.emodnet-physics.eu/erddap/files/SPI_10_5281_zenodo_3922146/ SPI - Ionic composition of particulate matter (PM10) from high-volume sampling over the Southern Ocean during the austral summer of 2016/2017 on board the Antarctic Circumnavigation Expedition (ACE). Aerosol particles originate from a variety of sources (Tomasi and Lupi, 2017). Information on particle chemical composition can be utilized to access particle origin. During the Antarctic Circumnavigation Expedition (ACE) cruise around the Southern Ocean, off-line filter sampling of ambient air was performed. Filters were stored on the ship (at -20 degrees C) and after the cruise concluded analysed at Leibniz-Institute for Tropospheric Research (TROPOS) concerning ionic composition of sampled material. Here, we give mass concentrations for inorganic ions (chloride, sodium, potassium, magnesium, calcium, ammonium, nitrate, sulphate, and bromide), organic constituents (methane-sulfonic acid and oxalate), and total filter load of particles with a mobility diameter smaller 10 micrometers (PM10) for each 24 hour-sampled filter.\n\ncdm_data_type = Other\nVARIABLES:\nstart_datetime (Time, seconds since 1970-01-01T00:00:00Z)\nstart_latitude (latitude, degree_north)\nstart_longitude (longitude, degree_east)\nend_datetime (Time, seconds since 1970-01-01T00:00:00Z)\nend_latitude (latitude, degree_north)\nend_longitude (longitude, degree_east)\nvolume_of_sampled_air (m3)\nmass_concentration_of_pm10_ambient_aerosol_particles_in_air (kg m-3)\nmass_concentration_of_pm10_chloride_dry_aerosol_particles_in_air (kg m-3)\nmass_concentration_of_pm10_nitrate_dry_aerosol_particles_in_air (kg m-3)\nmass_concentration_of_pm10_sulfate_dry_aerosol_particles_in_air (kg m-3)\nmass_concentration_of_pm10_oxalate_dry_aerosol_particles_in_air (kg m-3)\nmass_concentration_of_pm10_bromide_dry_aerosol_particles_in_air (kg m-3)\nmass_concentration_of_pm10_methanesulfonic_acid_dry_aerosol_particles_in_air (kg m-3)\nmass_concentration_of_pm10_sodium_dry_aerosol_particles_in_air (kg m-3)\nmass_concentration_of_pm10_ammonium_dry_aerosol_particles_in_air (kg m-3)\nmass_concentration_of_pm10_potassium_dry_aerosol_particles_in_air (kg m-3)\nmass_concentration_of_pm10_magnesium_dry_aerosol_particles_in_air (kg m-3)\nmass_concentration_of_pm10_calcium_dry_aerosol_particles_in_air (kg m-3)\nquality_flag\n https://erddap.emodnet-physics.eu/erddap/info/SPI_10_5281_zenodo_3922146/index.htmlTable https://doi.org/10.5281/zenodo.3922147 (external link) http://erddap.emodnet-physics.eu/erddap/rss/SPI_10_5281_zenodo_3922146.rss https://erddap.emodnet-physics.eu/erddap/subscriptions/add.html?datasetID=SPI_10_5281_zenodo_3922146&showErrors=false&email= SPI SPI_10_5281_zenodo_3922146
https://erddap.emodnet-physics.eu/erddap/tabledap/SPI_10_5281_zenodo_2616605 https://erddap.emodnet-physics.eu/erddap/tabledap/SPI_10_5281_zenodo_2616605.graph https://erddap.emodnet-physics.eu/erddap/files/SPI_10_5281_zenodo_2616605/ SPI - Nutrient concentration in seawater samples, collected from the underway supply, CTD and trace metal rosettes in the Southern Ocean during the austral summer of 2016/2017, on board the Antarctic Circumnavigation Expedition (ACE). This dataset presents concentrations of nutrients (µmol/L): nitrous oxide (NOx), nitrate, nitrite, ammonium (NH4), phosphate (PO4) and silicic acid (Si), measured in samples of seawater during the Antarctic Circumnavigation Expedition (ACE). Samples were collected from CTD and trace metal rosette (TMR) deployments, as well as from the underway water supply on board, then analysed by flow injection following certified standards. This data was collected to support physical, chemical and biological oceanography studies in the Southern Ocean, conducted as part of ACE during the austral summer of 2016/2017.\n\ncdm_data_type = Other\nVARIABLES:\nace_station_number\nace_event_number\ndate_time_sampling (Time, seconds since 1970-01-01T00:00:00Z)\nlatitude (degrees_north)\nlongitude (degrees_east)\nsampling_method\ndepth (m)\nace_sample_number\nmeasuring_date\nconcentration_of_nitrous_oxide (umol L-1)\nstandard_deviation_of_concentration_of_nitrous_oxide (umol L-1)\nconcentration_of_phosphate (umol L-1)\nstandard_deviation_of_concentration_of_phosphate (umol L-1)\nconcentration_of_nitrite (umol L-1)\nstandard_deviation_of_concentration_of_nitrite (umol L-1)\nconcentration_of_silicic_acid (umol L-1)\nstandard_deviation_of_concentration_of_silicic_acid (umol L-1)\nconcentration_of_ammonium (umol L-1)\nstandard_deviation_of_concentration_of_ammonium (umol L-1)\nconcentration_of_nitrate (umol L-1)\nstandard_deviation_of_concentration_of_nitrate (umol L-1)\ncomments\n https://erddap.emodnet-physics.eu/erddap/metadata/fgdc/xml/SPI_10_5281_zenodo_2616605_fgdc.xml https://erddap.emodnet-physics.eu/erddap/metadata/iso19115/xml/SPI_10_5281_zenodo_2616605_iso19115.xml https://erddap.emodnet-physics.eu/erddap/info/SPI_10_5281_zenodo_2616605/index.htmlTable https://doi.org/10.5281/zenodo.3923586 (external link) http://erddap.emodnet-physics.eu/erddap/rss/SPI_10_5281_zenodo_2616605.rss https://erddap.emodnet-physics.eu/erddap/subscriptions/add.html?datasetID=SPI_10_5281_zenodo_2616605&showErrors=false&email= SPI SPI_10_5281_zenodo_2616605
https://erddap.emodnet-physics.eu/erddap/tabledap/SPI_10_5281_zenodo_3250979 https://erddap.emodnet-physics.eu/erddap/tabledap/SPI_10_5281_zenodo_3250979.graph https://erddap.emodnet-physics.eu/erddap/files/SPI_10_5281_zenodo_3250979/ SPI - Seawater chromium concentrations and isotope compositions in the Southern Ocean during the austral summer of 2016/2017, on board the Antarctic Circumnavigation Expedition (ACE). Dissolved seawater chromium (Cr) concentrations and stable isotope compositions measured on samples collected with a trace metal clean rosette system in the Southern Ocean. Stations TM 7 to TM 12 reflect a north-south transect from Hobart, Tasmania to Mertz Glacier in Antarctica. Stations TM 14 and TM 15 neighbour the Balleny Islands. Stations TM 18 and TM 20 are located in the Drake Passage. Water samples were collected down to a depth of 1000 metres. The water was filtered in a class 100 clean container aboard the ship through pre-rinsed Supor Acropak capsule filters (0.2 um). Subsequently the samples were acidified and stored at a pH < 2 for several months prior to analysis. Reported values therefore represent bulk seawater chromium (Cr III and Cr VI). The data was obtained using the double-spike technique.\n\ncdm_data_type = Other\nVARIABLES:\ndate_time (Time, seconds since 1970-01-01T00:00:00Z)\nlatitude (degrees_north)\nlongitude (degrees_east)\ntrace_metal_rosette_cast_number\nace_event_number\nace_sample_number\ndepth (m)\nchromium_concentration (nmol kg-1)\nd53Cr (‰)\ninternal_error (‰)\n https://erddap.emodnet-physics.eu/erddap/metadata/fgdc/xml/SPI_10_5281_zenodo_3250979_fgdc.xml https://erddap.emodnet-physics.eu/erddap/metadata/iso19115/xml/SPI_10_5281_zenodo_3250979_iso19115.xml https://erddap.emodnet-physics.eu/erddap/info/SPI_10_5281_zenodo_3250979/index.htmlTable https://doi.org/10.5281/zenodo.3250980 (external link) http://erddap.emodnet-physics.eu/erddap/rss/SPI_10_5281_zenodo_3250979.rss https://erddap.emodnet-physics.eu/erddap/subscriptions/add.html?datasetID=SPI_10_5281_zenodo_3250979&showErrors=false&email= SPI SPI_10_5281_zenodo_3250979
https://erddap.emodnet-physics.eu/erddap/tabledap/SPI_10_5281_zenodo_3974311 https://erddap.emodnet-physics.eu/erddap/tabledap/SPI_10_5281_zenodo_3974311.graph https://erddap.emodnet-physics.eu/erddap/files/SPI_10_5281_zenodo_3974311/ SPI - Surface cyclone mask for the Antarctic Circumnavigation Expedition from December 2016 – March 2017. This dataset contains a surface cyclone mask, which records the presence of a surface cyclone along the track of the Antarctic Circumnavigation expedition (ACE). The surface cyclones are calculated applying a 2D cyclone identification algorithm (Wernli and Schwierz, 2006; Sprenger et al., 2017) using global operational analysis data of the European Centre for Medium Range Weather Forecasts.\n\ncdm_data_type = Other\nVARIABLES:\ntime (seconds since 1970-01-01T00:00:00Z)\ncyclone_flag\nlatitude (degrees_north)\nlongitude (degrees_east)\n https://erddap.emodnet-physics.eu/erddap/metadata/fgdc/xml/SPI_10_5281_zenodo_3974311_fgdc.xml https://erddap.emodnet-physics.eu/erddap/metadata/iso19115/xml/SPI_10_5281_zenodo_3974311_iso19115.xml https://erddap.emodnet-physics.eu/erddap/info/SPI_10_5281_zenodo_3974311/index.htmlTable https://doi.org/10.5281/zenodo.3974312 (external link) http://erddap.emodnet-physics.eu/erddap/rss/SPI_10_5281_zenodo_3974311.rss https://erddap.emodnet-physics.eu/erddap/subscriptions/add.html?datasetID=SPI_10_5281_zenodo_3974311&showErrors=false&email= Institute for Atmospheric and Climate Science, ETH Zurich, Switzerland SPI_10_5281_zenodo_3974311
https://erddap.emodnet-physics.eu/erddap/tabledap/SPI_10_5281_zenodo_2636778 https://erddap.emodnet-physics.eu/erddap/tabledap/SPI_10_5281_zenodo_2636778.graph https://erddap.emodnet-physics.eu/erddap/files/SPI_10_5281_zenodo_2636778/ SPI - Trace gas mixing ratios measured over the Southern Ocean in the austral summer of 2016/2017, during the Antarctic Circumnavigation Expedition. The authors would highly appreciate to be contacted if the data is used for any purpose. We measured mixing ratios of CO, CO2 and CH4 with a PICARRO G2401 Gas Analyzer. Ozone (O3) mixing ratios were measured with a 2B Technology ozone monitor, model 205. We report five-minute averaged data cleaned from exhaust gas influence. Temporal coverage is from December 20, 2016 to April 10, 2017. The trace gas concentrations represent a large number of atmospheric processes that happen on different time scales. CO for example, has basically no sources other than combustion and can hence be used as tracer for air mass transport from regions with combustion activities (e.g., South Africa). CO has a lifetime of a few weeks. CO2 and CH4 are longer-lived trace gases which disperse globally. The data set shows that concentrations in the Northern Hemisphere are higher than in the Southern Hemisphere. Both trace gases are emitted by anthropogenic activities as well as natural sources. Over the cruise track, areas of the Southern Ocean were passed where these trace gases either outgas or are absorbed. Ozone is a secondary trace gas, meaning that it is formed in the atmosphere. Its concentrations are relatively low. All trace gases data have been cleaned from exhaust gas influence.\n\ncdm_data_type = Other\nVARIABLES:\ntime (seconds since 1970-01-01T00:00:00Z)\nlatitude (degrees_north)\nlongitude (degrees_east)\no3_concentration (ppb)\nch4_concentration (ppm)\nco_concentration (ppb)\nco2_concentration (ppm)\n https://erddap.emodnet-physics.eu/erddap/metadata/fgdc/xml/SPI_10_5281_zenodo_2636778_fgdc.xml https://erddap.emodnet-physics.eu/erddap/metadata/iso19115/xml/SPI_10_5281_zenodo_2636778_iso19115.xml https://erddap.emodnet-physics.eu/erddap/info/SPI_10_5281_zenodo_2636778/index.htmlTable https://doi.org/10.5281/zenodo.4028749 (external link) http://erddap.emodnet-physics.eu/erddap/rss/SPI_10_5281_zenodo_2636778.rss https://erddap.emodnet-physics.eu/erddap/subscriptions/add.html?datasetID=SPI_10_5281_zenodo_2636778&showErrors=false&email= Paul Scherrer Institute, Villigen, Switzerland SPI_10_5281_zenodo_2636778

 
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