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_null a_measure_of_the_tendency_of_any_body_of_fresh_or_salt_water_to_either_gain_or_lose_electrons_when_it_is_subject_to_change_by_introduction_of_a_new_species a_measure_of_the_tendency_of_any_body_of_fresh_or_salt_water_to_either_gain_or_lose_electrons_when_it_is_subject_to_change_by_introduction_of_a_new_species_quality_control_flags acoustic_backscatter_in_the_water_column adcp_bin_depth_closest_to_other_sensors_on_the_observatory adcp_transducer_temperature air_pressure air_temperature air_temperature_in_dry_bulb air_temperature_in_dry_bulb_quality_flag air_temperature_quality_flag amplitude_measurement_with_blue_excitation_light amplitude_measurement_with_red_excitation_light amplitude_qc amplitude_quality_code amplitude_x amplitude_y amplitude_z amplitudex_y_z_ty_code atmospheric_pressure atmospheric_pressure_at_altitude atmospheric_pressure_at_sea_level atmospheric_pressure_at_sea_level_quality_flag atmospheric_pressure_quality_control_flags atmospheric_pressure_quality_flag battery battery_qc battery_quality_code battery_voltage_level beam_angle bin_number bottom-top_current_component bottom-up_current_component calculated_beam_c_inverse_meters calculated_beam_c_inverse_meters_quality_flag calibrated_phase cdir_quality_flag cdom cdom_quality_flag chl_nominal_data_quality_flag chlorophyll-a_fluorescence chlorophyll-a_fluorescence_quality_flag chlorophyll_concentration_in_sea_water_quality_flag co2_fugacity co2_partial_pressure co2_partial_pressure_quality_flag concentration_of_chlorophyll-a concentration_of_chlorophyll-a_in_sea_water conductivity conductivity_data_quality_flag conductivity_of_sea_water conductivity_quality_flag corrected_signal_raw_count corrected_signal_raw_count_quality_flag correlation_0 correlation_1 correlation_2 correlation_3 correlation_beam_1 correlation_beam_2 correlation_beam_3 correlation_beam_4 crude_oil_in_sea_water crude_oil_in_sea_water_quality_control_flags cspd_quality_flag ctd_idronaut_conductivity_data_quality_flag ctd_idronaut_oxygen_conc_mgl_data_quality_flag ctd_idronaut_oxygen_sat_data_quality_flag ctd_idronaut_pressure_data_quality_flag ctd_idronaut_salinity_data_quality_flag ctd_idronaut_soundvelocity_data_quality_flag ctd_idronaut_temperature_data_quality_flag current_direction_as_degrees_from_north current_direction_as_degrees_from_north_quality_flag current_direction_of_the_sea_water current_speed current_speed_of_the_sea_water current_speed_quality_flag current_to_direction_relative_true_north current_to_direction_relative_true_north_quality_flag current_velocity_quality_code density_anomaly deployment_latitude deployment_longitude depth depth_and_ancillary_variable_obtained_through_pressure_measurements depth_below_sea_floor depth_of_each_measurement depth_of_measurement depth_of_measurements depth_of_measurements_quality_control_flags depth_quality_flag direction direction_from_at_spectral_maximum_of_waves_on_the_water_body_by_acoustic_doppler_wave_array direction_from_at_spectral_maximum_of_waves_on_the_water_body_by_acoustic_doppler_wave_array_quality_control_flags direction_from_mean_of_waves_mean_wave_direction_on_the_water_body_by_acoustic_doppler_wave_array direction_from_mean_of_waves_mean_wave_direction_on_the_water_body_by_acoustic_doppler_wave_array_quality_control_flags direction_from_of_wind_gust_relative_to_true_north_wind_direction_in_the_atmosphere direction_of_sea_water_velocity direction_quality_flag direction_towards_of_water_current direction_towards_of_water_current_in_the_water_body direction_towards_the_sea_water_is_flowing_currents_ direction_towards_the_sea_water_is_flowing_currents_quality_control_flags dissolved_oxygen dissolved_oxygen_concentration dissolved_oxygen_in_the_water_column dissolved_oxygen_quality_flag dissolved_oxygen_saturation dox2 eastward_sea_water_velocity eastward_speed_component_of_the_sea_water_velocity eastward_velocity_of_water_current_in_the_water_body eastward_velocity_of_water_current_in_the_water_body_quality_control_flags echo_intensity_0 echo_intensity_1 echo_intensity_2 echo_intensity_3 echo_intensity_beam_1 echo_intensity_beam_2 echo_intensity_beam_3 echo_intensity_beam_4 echo_intensity_per_beam_1 echo_intensity_per_beam_2 echo_intensity_per_beam_3 echo_intensity_per_beam_4 eci1_quality_flag eci2_quality_flag eci3_quality_flag eci4_quality_flag electrical_conductivity electrical_conductivity_quality_flag error_velocity ervv_quality_flag euxroob01_chlorophyll_concentration euxroob01_oxygen_concentration euxroob01_water_conductivity euxroob01_water_current_direction euxroob01_water_current_speed euxroob01_water_pressure euxroob01_water_temperature euxroob01_water_turbidity euxroob02_chlorophyll_concentration euxroob02_oxygen_concentration euxroob02_water_conductivity euxroob02_water_current_direction euxroob02_water_current_speed euxroob02_water_pressure euxroob02_water_temperature euxroob02_water_turbidity euxroob03_chlorophyll_concentration euxroob03_oxygen_concentration euxroob03_water_conductivity euxroob03_water_current_direction euxroob03_water_current_speed euxroob03_water_pressure euxroob03_water_temperature euxroob03_water_turbidity ewct_quality_flag fluorescence fluorescence_quality_flag fugacity_of_co2_in_water fugacity_of_co2_quality_flag gps_latitude_of_each_location gps_longitude_of_each_location gust_wind_from_direction_relative_true_north gust_wind_from_direction_relative_true_north_quality_flag gust_wind_speed gust_wind_speed_quality_flag heading heading_qc heading_quality_code horizontal_current_speed horizontal_current_speed_quality_flag horizontal_velocity_of_the_water_column_currents_ horizontal_velocity_of_the_water_column_currents_quality_control_flags horizontal_wind_speed horizontal_wind_speed_quality_flag hourly_precipitation_rate_liquid_water_equivalent_ ices_area ices_ecoregion ices_statistical_rectangle id_of_the_station_in_the_timeseries identifier identifier_of_the_sensor_that_took_the_measurement in_situ_sea_water_temperature in_situ_sea_water_temperature_corrected_values_ in_situ_sea_water_temperature_expanded_uncertainty_with_95_coverage_k_2_ in_situ_sea_water_temperature_quality_control_flags in_situ_sea_water_temperature_raw_data_ includes_all_variants_of_chlorophyll_expressed_in_terms_of_per_unit_volume_per_unit_area_of_any_body_of_fresh_or_salt_water_or_as_a_relative_colour_index_e.g._pci_._does_not_include_data_expressed_per_unit_mass_of_spm. instrument_id internal_thermistor_counts internal_thermistor_counts_quality_flag latitude latitude_of_each_location latitude_of_measurement latitude_of_measurements latitude_of_measurements_quality_control_flags latitude_position_of_the_station level light_irradiance_surface_par lithogenic_fraction_flux long-wave_radiation long-wave_radiation_quality_flag longitude longitude_of_each_location longitude_of_measurement longitude_of_measurements longitude_of_measurements_quality_control_flags longitude_position_of_the_station longwave_atmospheric_incoming_radiation longwave_atmospheric_incoming_radiation_quality_flag longwave_radiation_quality_flag marine_institute_data_granule_identifier marine_strategy_framework_directive_region marine_strategy_framework_directive_sub-region mass_concentration_of_chlorophyll_per_unit_volume_of_sea_water_total_chlorophyll-a_ mass_of_elemental_silicon_in_biogenic_silica_opal_ maximum_zero_crossing_wave_height_hmax_ mean_wave_direction_from_mdir_ method_of_data_processing minus_the_log_of_the_hydrogen_ion_concentration_moles_per_litre_in_the_water_column. minus_the_log_of_the_hydrogen_ion_concentration_moles_per_litre_in_the_water_column._quality_control_flags motion_and_orientation_of_the_adcp named_transect_of_repeat_stations nominal_chlorophyll-a_concentration_from_manufacturer_s_calibration nominal_depth_of_measurements north_east_upward_water_velocity_quality_code northward_sea_water_velocity northward_speed_component_of_the_sea_water_velocity northward_velocity_of_water_current_in_the_water_body northward_velocity_of_water_current_in_the_water_body_quality_control_flags nsct_quality_flag number_of_moles_per_unit_volume_molarity optode_quality_flag optode_serial optode_type osat oxygen_conc_mgl_data_quality_flag oxygen_conc_mll_data_quality_flag oxygen_concentration oxygen_concentration_quality_flag oxygen_quality_flag oxygen_sat_data_quality_flag oxygen_saturation oxygen_saturation_quality_flag par_quality_flag parameters_that_describe_the_displacement_of_platforms_or_instruments_in_space_relative_to_various_origins partial_pressure_of_carbon_dioxide_in_sea_water particulate_organic_carbon_mass_flux particulate_total_calcium_carbonate_flux particulate_total_carbon_mass_flux particulate_total_mass_flux particulate_total_nitrogen_mass_flux particulate_total_organic_carbon_flux pco2_corrected_data_quality_flag percent_good_0 percent_good_1 percent_good_2 percent_good_3 percent_good_3_beam_solution percentage_of_4_beam_solution percentage_of_error_velocity_rejections percentage_of_more_than_two_beams_bad period_at_spectral_maximum_of_waves_peak_period_tp_on_the_water_body_by_acoustic_doppler_wave_array period_at_spectral_maximum_of_waves_peak_period_tp_on_the_water_body_by_acoustic_doppler_wave_array_quality_control_flags period_mean_of_waves_on_the_water_body_by_acoustic_doppler_wave_array_ period_mean_of_waves_on_the_water_body_by_acoustic_doppler_wave_array_quality_control_flags ph ph_quality_flag phase_measurement_with_blue_excitation_light phase_measurement_with_red_excitation_light pitch pitch_qc pitch_quality_code platform_category platform_category_code platform_name position_quality_flag potential_density potential_temperature_of_the_sea-water practical_salinity practical_salinity_quality_flag practical_salinity_s_p_is_a_determination_of_the_salinity_of_sea_water_based_on_its_electrical_conductance. practical_salinitya_of_the_water_body precipitation_quality_flag pressure pressure_at_co2_sensor_equilibrator_membrane pressure_at_co2_sensor_equilibrator_membrane_quality_flag pressure_data_quality_flag pressure_exerted_by_sea_water_and_overlying_atmosphere pressure_exterted_by_seawater_and_overlying_atmosphere pressure_of_gas_stream pressure_of_gas_stream_quality_flag pressure_quality_flag pressure_that_exists_in_the_medium_of_sea_water pressure_that_exists_in_the_medium_of_sea_water_quality_control_flags pressure_that_exists_in_the_medium_of_sea_water_raw_sensor_values_ profondeur_quality_flag quality_control_flag_of_current_velocity_in_the_water_column quality_control_flag_of_dissolved_oxygen_in_the_water_column quality_control_flag_of_echo_intensity_signal_in_the_water_column quality_control_flag_of_pratical_salinity_of_sea_water quality_control_flag_of_sea-water_potential_temperature quality_control_flag_of_sea-water_temperature quality_control_flag_of_sea_water_density quality_control_flag_of_sea_water_pressure quality_control_flag_of_turbidity_of_water quality_flag quality_flag_for_air_pressure quality_flag_for_air_temperature quality_flag_for_cndc quality_flag_for_deph quality_flag_for_doxy quality_flag_for_ewct quality_flag_for_flu2 quality_flag_for_hcdt quality_flag_for_hcsp quality_flag_for_latitude_and_longitude quality_flag_for_mumol_per_square_meter_and_second_of_photosyntetically_active_radiation quality_flag_for_nsct quality_flag_for_osat quality_flag_for_position quality_flag_for_pres quality_flag_for_prst quality_flag_for_psal quality_flag_for_relative_humidity quality_flag_for_temp quality_flag_for_temp_doxy quality_flag_for_time quality_flag_for_tur4 quality_flag_for_vsp quality_flag_for_wind_direction quality_flag_for_wind_speed quality_flag_quality_flag raw_fluorometer_output ref_count refcount_quality_flag refined_fuels_in_sea_water refined_fuels_in_sea_water_quality_control_flags relative_humidity relative_humidity_quality_flag roll roll_qc roll_quality_code salinity salinity_data_quality_flag salinity_of_the_sea-water salinity_quality_flag sample_rate saturation_of_oxygen_in_sea_water saturation_of_oxygen_in_sea_water_quality_control_flags saturation_oxygene_quality_flag sbe16plus_conductivity_data_quality_flag sbe16plus_oxygen_conc_mll_data_quality_flag sbe16plus_oxygen_sat_data_quality_flag sbe16plus_salinity_data_quality_flag sbe16plus_soundvelocity_data_quality_flag sbe16plus_temperature_data_quality_flag sea_floor_depth_below_sea_surface sea_potential_temperature sea_potential_temperature_quality_flag sea_pressure sea_pressure_quality_flag sea_surface_temperature sea_temperature sea_temperature_from_oxygen_sensor sea_temperature_in-situ_its-90_scale sea_temperature_quality_flag sea_water_density sea_water_electrical_conductivity sea_water_electrical_conductivity_corrected_values_ sea_water_electrical_conductivity_expanded_uncertainty_with_95_coverage_k_2_ sea_water_electrical_conductivity_quality_control_flags sea_water_electrical_conductivity_raw_data_ sea_water_ph_reported_on_total_scale sea_water_ph_reported_on_total_scale_is_the_measure_of_acidity_of_seawater sea_water_practical_salinity sea_water_pressure sea_water_pressure_equals_0_at_sea-level sea_water_salinity sea_water_salinity_quality_control_flags sea_water_salinity_raw_sensor_values_ sea_water_temperature sea_water_temperature_in-situ_its-90_scale sea_water_turbidity seadatanet_crs seavox_sea-area seavox_sea-area_code_value sensor_id shortwave_radiation_quality_flag shortwave_solar_incoming_radiation shortwave_solar_incoming_radiation_quality_flag sigma-theta_quality_flag sigma_theta_quality_flag signal_count signalcount_quality_flag solar_radiation solar_radiation_quality_flag solid_earth_differential_pore_pressure solid_earth_temperature sound_pressure_level_at_1000_hz_third-octave_band sound_pressure_level_at_125_hz_third-octave_band sound_pressure_level_at_2000_hz_third-octave_band sound_pressure_level_at_63_hz_third-octave_band sound_pressure_level_full_bandwidth_ sound_pressure_level_spl_of_ambient_noise_at_the_125hz-centered_frequency_band_the_with_a_time_window_of_10_seconds._the_spl_values_are_computed_using_the_welch_method_with_a_time_window_of_10_seconds_using_1-second_segments_hann_window_and_50_overlap._ sound_pressure_level_spl_of_ambient_noise_at_the_125hz-centered_frequency_band_the_with_a_time_window_of_10_seconds._the_spl_values_are_computed_using_the_welch_method_with_a_time_window_of_10_seconds_using_1-second_segments_hann_window_and_50_overlap._quality_control_flags sound_pressure_level_spl_of_ambient_noise_at_the_2000hz-centered_frequency_band_the_with_a_time_window_of_10_seconds._the_spl_values_are_computed_using_the_welch_method_with_a_time_window_of_10_seconds_using_1-second_segments_hann_window_and_50_overlap._ sound_pressure_level_spl_of_ambient_noise_at_the_2000hz-centered_frequency_band_the_with_a_time_window_of_10_seconds._the_spl_values_are_computed_using_the_welch_method_with_a_time_window_of_10_seconds_using_1-second_segments_hann_window_and_50_overlap._quality_control_flags sound_pressure_level_spl_of_ambient_noise_at_the_63hz-centered_frequency_band_the_with_a_time_window_of_10_seconds._the_spl_values_are_computed_using_the_welch_method_with_a_time_window_of_10_seconds_using_1-second_segments_hann_window_and_50_overlap._ sound_pressure_level_spl_of_ambient_noise_at_the_63hz-centered_frequency_band_the_with_a_time_window_of_10_seconds._the_spl_values_are_computed_using_the_welch_method_with_a_time_window_of_10_seconds_using_1-second_segments_hann_window_and_50_overlap._quality_control_flags sound_velocity sound_velocity_in_sea_water sound_velocity_quality_flag soundspeed soundspeed_qc soundvelocity_data_quality_flag south-north_current_component south-north_current_component_quality_flag spectral_moments_0_2_wave_period_tm02_ spectral_significant_wave_height_hm0_ spectral_significant_wave_height_of_waves_by_acoustic_doppler_wave_array spectral_significant_wave_height_of_waves_by_acoustic_doppler_wave_array_quality_control_flags speed_component_of_the_sea_water_velocity speed_mean_of_water_current_in_the_water_body speed_of_sound_in_sea_water speed_of_sound_in_sea_water_quality_control_flags speed_of_sound_in_sea_water_raw_sensor_values_ speed_quality_flag spl_1000hz_data_quality_flag spl_125hz_data_quality_flag spl_2000hz_data_quality_flag spl_63hz_data_quality_flag spl_full_data_quality_flag station_location_unique_identifier_in_data_centre station_name surface_partial_pressure_of_carbon_dioxide_in_sea_water temperature temperature_compensated_phase temperature_data_quality_flag temperature_of_radiometer_case temperature_of_radiometer_case_quality_flag temperature_of_radiometer_dome temperature_of_radiometer_dome_quality_flag temperature_of_the_atmoshpere temperature_of_the_atmoshpere_quality_control_flags temperature_of_the_sea-water temperature_of_the_water temperature_potentielle temperature_quality_flag the_direction_from_which_a_gust_event_generally_regarded_as_an_increase_over_sustained_speed_of_more_than_5_m_s_lasting_less_than_20_seconds_is_blowing_quality_flag the_magnetically-corrected_compass_direction_towards_which_a_structure_bearing_sensors_or_sampling_devices_is_pointing._quality_flag the_quantity_of_coloured_organic_compounds_in_solution_in_unit_volume_of_any_body_of_water the_quantity_of_coloured_organic_compounds_in_solution_in_unit_volume_of_any_body_of_water_quality_control_flags theoric_depth_of_measurements time time_bounds time_of_measurement time_of_measurements time_of_measurment time_quality_flag total_chlorophyll-a total_iron total_iron_quality_flag turbidity turbidity_nominal_data_quality_flag turbidity_of_the_water turbidity_of_water_in_the_water_body turbidity_of_water_in_the_water_body_quality_control_flags turbidity_quality_flag umol_per_square_meter_and_per_second_of_photosyntetically_active_radiation unidirectivity_index_of_waves_on_the_water_body_by_acoustic_doppler_wave_array unidirectivity_index_of_waves_on_the_water_body_by_acoustic_doppler_wave_array_quality_control_flags upward_speed_component_of_the_sea_water_velocity upward_velocity_of_water_current_in_the_water_body upward_velocity_of_water_current_in_the_water_body_quality_control_flags vcsp_quality_flag velocity_east_data_quality_flag velocity_error velocity_north_data_quality_flag velocity_upward_data_quality_flag vertical_velocity_of_the_water_column_currents_ voltage_from_thermistor_bridge water_framework_directive_waterbody_name water_framework_directive_waterbody_type wave_height_maximum_of_waves_on_the_water_body_by_acoustic_doppler_wave_array wave_height_maximum_of_waves_on_the_water_body_by_acoustic_doppler_wave_array_quality_control_flags wave_height_mean_of_waves_highest_one_tenth_on_the_water_body_by_acoustic_doppler_wave_array wave_height_mean_of_waves_highest_one_tenth_on_the_water_body_by_acoustic_doppler_wave_array_quality_control_flags wave_height_mean_of_waves_highest_one_third_on_the_water_body_by_acoustic_doppler_wave_array wave_height_mean_of_waves_highest_one_third_on_the_water_body_by_acoustic_doppler_wave_array_quality_control_flags wave_period_at_spectral_peak_peak_period_tp_ west-east_current_component west-east_current_component_quality_flag wind_direction wind_direction_quality_control_flags wind_direction_quality_flag wind_from_direction_relative_true_north wind_from_direction_relative_true_north_quality_flag wind_speed wind_speed_quality_control_flags wind_speed_quality_flag x_east x_east_eastward_sea_water_velocity xyz_qc y_north y_north_northward_sea_water_velocity z_up z_up_upward_sea_water_velocity zero-crossing_period_of_waves_tz_on_the_water_body_by_acoustic_doppler_wave_array zero-crossing_period_of_waves_tz_on_the_water_body_by_acoustic_doppler_wave_array_quality_control_flags

3) The results of the search for long_name = _null

17 matching datasets, listed in alphabetical order. (Or, refine this search with Advanced Search  )
 

Grid DAP Data	Sub- set	Table DAP Data	Make A Graph	W M S	Source Data Files	Title	Sum- mary	FGDC, ISO, Metadata	Back- ground Info	RSS	E mail	Institution	Dataset ID
	set	data	graph			EMSO Azores Seamon-East Chemini dissolved iron concentration		F   I   M	background			Ifremer Institut ...	Emso_Azores_Chemini_IRON
	set	data	graph			Med Sea, Cretan Sea, NRT in situ Observations		F   I   M	background			HCMR POSEIDON	E1M3A_20080227_20090725
	set	data	graph			Med Sea, Cretan Sea, NRT in situ Observations		F   I   M	background			HCMR POSEIDON	E1M3A_20090726_20100707
	set	data	graph			Med Sea, Cretan Sea, NRT in situ Observations		F   I   M	background			HCMR POSEIDON	E1M3A_20110828_20130521
	set	data	graph			Med Sea, Cretan Sea, NRT in situ Observations		F   I   M	background			HCMR POSEIDON	E1M3A_20160713_20170415
	set	data	graph			Med Sea, Cretan Sea, NRT in situ Observations		F   I   M	background			HCMR POSEIDON	E1M3A_20190718_20201126
	set	data	graph			Med Sea, Cretan Sea, NRT in situ Observations		F   I   M	background			HCMR POSEIDON	E1M3A_20201127_20210912
	set	data	graph			Med Sea, Hellenic Arc, NRT in situ Observations		F   I   M	background			HCMR POSEIDON	Pylos_20090304_20091128
	set	data	graph			Med Sea, Hellenic Arc, NRT in situ Observations		F   I   M	background			HCMR POSEIDON	Pylos_20110228_20120212
	set	data	graph			Med Sea, Hellenic Arc, NRT in situ Observations		F   I   M	background			HCMR POSEIDON	Pylos_20120213_20130411
	set	data	graph			Med Sea, Hellenic Arc, NRT in situ Observations		F   I   M	background			HCMR POSEIDON	Pylos_20130412_20140117
	set	data	graph			Med Sea, Hellenic Arc, NRT in situ Observations		F   I   M	background			HCMR POSEIDON	Pylos_20140118_20141114
	set	data	graph			Med Sea, Hellenic Arc, NRT in situ Observations		F   I   M	background			HCMR POSEIDON	Pylos_20160715_20170415
	set	data	graph			Med Sea, Hellenic Arc, NRT in situ Observations		F   I   M	background			HCMR POSEIDON	Pylos_20180522_20190721
	set	data	graph			Med Sea, Hellenic Arc, NRT in situ Observations		F   I   M	background			HCMR POSEIDON	Pylos_20190722_20200901
	set	data	graph			SPL data from a Naxys Hydrophone at OBSEA (30min average)		F   I   M	background			Polytechnic Unive...	EMSO_OBSEA_NAXYS_SPL_30min
	set	data	graph			SPL data from a Naxys Hydrophone at OBSEA (full data)		F   I   M	background			Polytechnic Unive...	EMSO_OBSEA_NAXYS_SPL_full

The information in the table above is also available in other file formats (.csv, .htmlTable, .itx, .json, .jsonlCSV1, .jsonlCSV, .jsonlKVP, .mat, .nc, .nccsv, .tsv, .xhtml) via a RESTful web service.

 

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