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Row Type Variable Name Attribute Name Data Type Value
attribute NC_GLOBAL _NCProperties String version=2,netcdf=4.7.2,hdf5=1.10.5
attribute NC_GLOBAL cdm_data_type String Other
attribute NC_GLOBAL citation String Benavent, N., Garcia-Nieto, D., Cuevas, C.A. and Saiz-Lopez, A. (2020). 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). (Version 1.0) [Data set]. Zenodo. https://doi.org/10.5281/zenodo.3843263
attribute NC_GLOBAL contributors String [{'title': 'Nuria Benavent', 'path': 'https://orcid.org/0000-0003-3473-0629', 'role': 'author', 'organisation': 'Department of Atmospheric Chemistry and Climate, Institute of Physical Chemistry Rocasolano, Consejo Superior de Investigaciones Científicas, Spain'}, {'title': 'David Garcia-Nieto', 'path': 'https://orcid.org/0000-0002-0884-5978', 'role': 'author', 'organisation': 'Department of Atmospheric Chemistry and Climate, Institute of Physical Chemistry Rocasolano, Consejo Superior de Investigaciones Científicas, Spain'}, {'title': 'Carlos Alberto Cuevas', 'path': 'https://orcid.org/0000-0002-9251-5460', 'role': 'author', 'organisation': 'Department of Atmospheric Chemistry and Climate, Institute of Physical Chemistry Rocasolano, Consejo Superior de Investigaciones Científicas, Spain'}, {'title': 'Alfonso Saiz-Lopez', 'path': 'https://orcid.org/0000-0002-0060-1581', 'email': 'a.saiz@csic.es', 'role': 'author', 'organisation': 'Department of Atmospheric Chemistry and Climate, Institute of Physical Chemistry Rocasolano, Consejo Superior de Investigaciones Científicas, Spain'}]
attribute NC_GLOBAL Conventions String COARDS, CF-1.6, ACDD-1.3
attribute NC_GLOBAL creator_name String Nuria Benavent
attribute NC_GLOBAL creator_type String institution
attribute NC_GLOBAL creator_url String https://orcid.org/0000-0003-3473-0629 (external link)
attribute NC_GLOBAL DOI String https://doi.org/10.5281/zenodo.3843263 (external link)
attribute NC_GLOBAL infoUrl String https://doi.org/10.5281/zenodo.3843263 (external link)
attribute NC_GLOBAL institution String SPI
attribute NC_GLOBAL keywords String ACE, Antarctic Circumnavigation Expedition, Antarctica, atmosphere, BrO, bromine monoxide, halogens, MAX-DOAS
attribute NC_GLOBAL license String CC-BY-4.0
attribute NC_GLOBAL platform_code String UBXH3_ACE_3843262
attribute NC_GLOBAL platform_name String R/V Akademik Tryoshnikov
attribute NC_GLOBAL sourceUrl String (local files)
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v55
attribute NC_GLOBAL summary String 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.
attribute NC_GLOBAL title String 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).
attribute NC_GLOBAL type String ferrybox/ship
variable datetime double
attribute datetime _ChunkSizes uint 512
attribute datetime _CoordinateAxisType String Time
attribute datetime actual_range double 1.4836752E9, 1.491588E9
attribute datetime axis String T
attribute datetime description String time
attribute datetime ioos_category String Time
attribute datetime long_name String Time
attribute datetime standard_name String time
attribute datetime time_origin String 01-JAN-1970 00:00:00
attribute datetime units String seconds since 1970-01-01T00:00:00Z
attribute datetime x_spi_emodnet_visualise_variable String False
variable bro_mixing_ratio double
attribute bro_mixing_ratio _ChunkSizes uint 512
attribute bro_mixing_ratio actual_range double 0.579, 14.28
attribute bro_mixing_ratio description String Quotient between the number density of bromine monoxide (BrO) and the number density of the air or atmosphere at that same height, expressed in units of parts per trillion (1 out every 1e12 air molecules) or pptv [parts per trillion]
attribute bro_mixing_ratio spi_original_name String bro_mixing_ratio (pptv)
attribute bro_mixing_ratio units String parts per trillion
attribute bro_mixing_ratio x_spi_emodnet_visualise_variable String True
variable bro_mixing_ratio_unc double
attribute bro_mixing_ratio_unc _ChunkSizes uint 512
attribute bro_mixing_ratio_unc actual_range double 0.001, 0.8
attribute bro_mixing_ratio_unc description String Uncertainty in the bromine monoxide (BrO) mixing ratio [parts per trillion]
attribute bro_mixing_ratio_unc spi_original_name String bro_mixing_ratio_unc (pptv)
attribute bro_mixing_ratio_unc units String parts per trillion
attribute bro_mixing_ratio_unc x_spi_emodnet_visualise_variable String True
variable bro_vcd double
attribute bro_vcd _ChunkSizes uint 512
attribute bro_vcd actual_range double 3.38E11, 1.69E13
attribute bro_vcd description String Vertical column density of bromine monoxide (BrO) representing the vertical integration of the trace gas concentration profile [molecules per cm^2]
attribute bro_vcd spi_original_name String bro_vcd (molec/cm^2)
attribute bro_vcd x_spi_emodnet_visualise_variable String True
variable bro_vcd_unc double
attribute bro_vcd_unc _ChunkSizes uint 512
attribute bro_vcd_unc actual_range double 1.12E9, 1.14E12
attribute bro_vcd_unc description String Uncertainty in the vertical column density of bromine monoxide (BrO) [molecules per cm^2]
attribute bro_vcd_unc spi_original_name String bro_vcd_unc (molec/cm^2)
attribute bro_vcd_unc x_spi_emodnet_visualise_variable String True

 
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