SPI_10_5281_zenodo_2636778 eng UTF8 dataset service Firstname Surname Set-me Institution 555-555-5555 123 Simons Ave. Anywhere MD 12345 USA set-me@domain.com pointOfContact 2026-04-29 ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) 3 column row temporal SPI - Trace gas mixing ratios measured over the Southern Ocean in the austral summer of 2016/2017, during the Antarctic Circumnavigation Expedition. 2026-04-29 creation erddap.emodnet-physics.eu SPI_10_5281_zenodo_2636778 Julia Schmale https://doi.org/10.5281/zenodo.4028749 information web browser Background Information Background information from the source information originator 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. Julia Schmale https://doi.org/10.5281/zenodo.4028749 information web browser Background Information Background information from the source information pointOfContact ACE ACE-SPACE Antarctic Circumnavigation Expedition Antarctica carbon dioxide carbon monoxide CO CO2 CO4 methane O3 ozone Southern Ocean trace gas theme Paul Scherrer Institute, Villigen, Switzerland project time latitude longitude theme CF Standard Name Table v55 CC-BY-4.0 Paul Scherrer Institute, Villigen, Switzerland largerWorkCitation project eng geoscientificInformation 1 -179.99342 179.99936 -74.00771 53.97401 seconds 2016-12-17T00:00:00Z 2017-04-10T23:55:00Z SPI - Trace gas mixing ratios measured over the Southern Ocean in the austral summer of 2016/2017, during the Antarctic Circumnavigation Expedition. 2026-04-29 creation Julia Schmale https://doi.org/10.5281/zenodo.4028749 information web browser Background Information Background information from the source information originator 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. ERDDAP tabledap 1 -179.99342 179.99936 -74.00771 53.97401 seconds 2016-12-17T00:00:00Z 2017-04-10T23:55:00Z tight ERDDAPtabledapDatasetQueryAndAccess https://erddap.emodnet-physics.eu/erddap/tabledap/SPI_10_5281_zenodo_2636778 ERDDAP:tabledap ERDDAP-tabledap ERDDAP's tabledap service (a flavor of OPeNDAP) for tabular (sequence) data. Add different extensions (e.g., .html, .graph, .das, .dds) to the base URL for different purposes. download SPI - Trace gas mixing ratios measured over the Southern Ocean in the austral summer of 2016/2017, during the Antarctic Circumnavigation Expedition. 2026-04-29 creation Julia Schmale https://doi.org/10.5281/zenodo.4028749 information web browser Background Information Background information from the source information originator 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. OPeNDAP 1 -179.99342 179.99936 -74.00771 53.97401 seconds 2016-12-17T00:00:00Z 2017-04-10T23:55:00Z tight OPeNDAPDatasetQueryAndAccess https://erddap.emodnet-physics.eu/erddap/tabledap/SPI_10_5281_zenodo_2636778 OPeNDAP:OPeNDAP OPeNDAP An OPeNDAP service for tabular (sequence) data. Add different extensions (e.g., .html, .das, .dds) to the base URL for different purposes. download physicalMeasurement time double Time o3_concentration double o3_concentration ch4_concentration double ch4_concentration co_concentration double co_concentration co2_concentration double co2_concentration Firstname Surname Set-me Institution 555-555-5555 123 Simons Ave. Anywhere MD 12345 USA set-me@domain.com distributor OPeNDAP DAP/2.0 https://erddap.emodnet-physics.eu/erddap/tabledap/SPI_10_5281_zenodo_2636778.html order Data Subset Form ERDDAP's version of the OPeNDAP .html web page for this dataset. Specify a subset of the dataset and download the data via OPeNDAP or in many different file types. download https://erddap.emodnet-physics.eu/erddap/tabledap/SPI_10_5281_zenodo_2636778.graph order Make-A-Graph Form ERDDAP's Make-A-Graph .html web page for this dataset. Create an image with a map or graph of a subset of the data. mapDigital This record was created from dataset metadata by ERDDAP Version 2.27.0