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Easy Access to PMEL Scientific Data
The Pacific Marine Environmental Laboratory's ERDDAP data server for public access to scientific data |
![]() NOAA OAR PMEL |
Row Type | Variable Name | Attribute Name | Data Type | Value |
---|---|---|---|---|
attribute | NC_GLOBAL | cdm_data_type | String | Trajectory |
attribute | NC_GLOBAL | cdm_trajectory_variables | String | trajectory_id |
attribute | NC_GLOBAL | comment | String | CCN Measurements:\nA Droplet Measurement Technologies CCN Counter (DMT CCNC) was used to determine CCN concentrations of sub-1 um particles at supersaturations ranging from 0.1 to 0.62%. A multijet cascade impactor with a 50% aerodynamic cut-off diameter of 1.1 um was upstream of the CCNC. The sampled air was dried prior to reaching the CCNC. Details concerning the characteristics of the DMT CCN counter can be found in Roberts and Nenes [2005] and Lance et al. [2006]. The CCN counter was calibrated before and during the experiment as outlined by Lance et al. [2006]. The uncertainty associated with the CCN number concentration is estimated to be less than +/- 10% [Roberts and Nenes, 2005]. Uncertainty in the instrumental supersaturation is less than +/- 10% for the operating conditions of this experiment [Roberts and Nenes, 2005].\n\nThe data are in 10 second time intervals and include CCN concentration (in n/cm^3), CCN/CN ratio, and Supersaturation (in %).\n\nLance, S., J. Medina, J.N. Smith, and A. Nenes, Mapping the operation of the DMT continuous flow CCN counter, Aer. Sci. Tech., 40, 242 - 254, 2006.\nRoberts, G.C. and A. Nenes, A continuous-flow streamwise thermal gradient CCN chamber for atmospheric measurements, Aer. Sci. Tech., 39, 206 - 221, 2005. |
attribute | NC_GLOBAL | contributor_name | String | Coffman, Derek/NOAA-PMEL/Address: 7600 Sand Pt. Wy. NE,Seattle,WA 98115 /email: derek.coffman@noaa.gov |
attribute | NC_GLOBAL | Conventions | String | COARDS, CF-1.6, ACDD-1.3, NCCSV-1.0 |
attribute | NC_GLOBAL | creator_email | String | derek.coffman at noaa.gov |
attribute | NC_GLOBAL | creator_name | String | Coffman, Derek |
attribute | NC_GLOBAL | creator_url | String | https://www.pmel.noaa.gov/![]() |
attribute | NC_GLOBAL | dimensions | String | time=126001 |
attribute | NC_GLOBAL | Easternmost_Easting | double | -60.59 |
attribute | NC_GLOBAL | featureType | String | Trajectory |
attribute | NC_GLOBAL | geospatial_lat_max | double | 42.4999 |
attribute | NC_GLOBAL | geospatial_lat_min | double | 33.1884 |
attribute | NC_GLOBAL | geospatial_lat_units | String | degrees_north |
attribute | NC_GLOBAL | geospatial_lon_max | double | -60.59 |
attribute | NC_GLOBAL | geospatial_lon_min | double | -70.8943 |
attribute | NC_GLOBAL | geospatial_lon_units | String | degrees_east |
attribute | NC_GLOBAL | geospatial_vertical_max | double | 18.0 |
attribute | NC_GLOBAL | geospatial_vertical_min | double | 18.0 |
attribute | NC_GLOBAL | geospatial_vertical_positive | String | up |
attribute | NC_GLOBAL | geospatial_vertical_units | String | m |
attribute | NC_GLOBAL | infoUrl | String | https://www.pmel.noaa.gov/acg/data/index.html![]() |
attribute | NC_GLOBAL | institution | String | NOAA |
attribute | NC_GLOBAL | keywords | String | above, altitude, atmosphere, atmospheric, ccn, ccn_cn_ratio, ccn_ss, chemistry, chla, chlorophyll, chlorophyll-a, cloud, cloud cover, cloudiness, commerce, concentration, condensation, cover, data, datetime, department, doc, duration, earth, Earth Science > Atmosphere > Altitude > Station Height, environmental, height, identifier, laboratory, latitude, level, longitude, marine, mean, measurement, meteorology, noaa, nuclei, pacific, pmel, ratio, science, sea, station, supersaturation, time, trajectory, trajectory_id, wacs, wacs-2 |
attribute | NC_GLOBAL | keywords_vocabulary | String | GCMD Science Keywords |
attribute | NC_GLOBAL | license | String | These data were produced by NOAA and are not subject to copyright protection in the United States. NOAA waives any potential copyright and related rights in these data worldwide through the Creative Commons Zero 1.0 Universal Public Domain Dedication (CC0-1.0). |
attribute | NC_GLOBAL | Northernmost_Northing | double | 42.4999 |
attribute | NC_GLOBAL | platform | String | Knorr |
attribute | NC_GLOBAL | product_version | String | 0 |
attribute | NC_GLOBAL | project | String | WACS-2 |
attribute | NC_GLOBAL | sourceUrl | String | (local files) |
attribute | NC_GLOBAL | Southernmost_Northing | double | 33.1884 |
attribute | NC_GLOBAL | standard_name_vocabulary | String | CF Standard Name Table v70 |
attribute | NC_GLOBAL | subsetVariables | String | trajectory_id, duration, altitude |
attribute | NC_GLOBAL | summary | String | Core WACS 2014 Objectives\n\n 1. Characterization of freshly emitted SSA. Freshly emitted SSA will be generated with\nNOAA Pacific Marine Environmental Laboratory's (PMEL) Sea Sweep particle\ngenerator. Sea Sweep allows for the generation and sampling of nascent\nparticles without contamination and modification by existing atmospheric particles\nand gases (Bates et al., J. Geophys. Res., 2012). Properties of the particles to be\ncharacterized include chemical composition, size distribution, number concentration,\ncloud-nucleating ability, light scattering as a function of relative humidity, and light\nabsorption.\n\n2. Characterization of surface and column seawater properties. Surface seawater\nproperties to be measured include fluorescence (chlorophyll-a), particulate organic\ncarbon (POC), dissolved organic carbon (Department of Commerce (DOC)), dimethylsulfide (DMS), temperature,\nsalinity, bubble surface tension, exopolymer gels, phytoplankton species composition,\nand nutrients.\n\n3. Assessment of the impact of surface seawater properties on SSA. The response of\nnascent SSA properties (composition, size distribution, cloud-nucleating ability) to\nchanges in ocean biological regime will be determined. |
attribute | NC_GLOBAL | target_sample_rh | String | 47-55% |
attribute | NC_GLOBAL | time_coverage_end | String | 2014-06-04T12:00:00Z |
attribute | NC_GLOBAL | time_coverage_start | String | 2014-05-20T22:00:00Z |
attribute | NC_GLOBAL | title | String | PMEL Atmospheric Chemistry WACS-2 CCN data |
attribute | NC_GLOBAL | Westernmost_Easting | double | -70.8943 |
variable | time | double | ||
attribute | time | _CoordinateAxisType | String | Time |
attribute | time | actual_range | double | 1.4006232E9, 1.4018832E9 |
attribute | time | axis | String | T |
attribute | time | comment | String | Start of sampling period |
attribute | time | coords | String | time |
attribute | time | ioos_category | String | Time |
attribute | time | long_name | String | Datetime UTC |
attribute | time | source_name | String | datetime_utc |
attribute | time | standard_name | String | time |
attribute | time | time_origin | String | 01-JAN-1970 00:00:00 |
attribute | time | time_precision | String | 1970-01-01T00:00:00Z |
attribute | time | units | String | seconds since 1970-01-01T00:00:00Z |
variable | trajectory_id | String | ||
attribute | trajectory_id | cf_role | String | trajectory_id |
attribute | trajectory_id | coords | String | time |
attribute | trajectory_id | ioos_category | String | Identifier |
attribute | trajectory_id | long_name | String | Trajectory ID |
variable | duration | int | ||
attribute | duration | _FillValue | int | 2147483647 |
attribute | duration | actual_range | int | 600, 600 |
attribute | duration | coords | String | time |
attribute | duration | ioos_category | String | Time |
attribute | duration | long_name | String | Duration |
attribute | duration | units | String | second |
variable | latitude | double | ||
attribute | latitude | _CoordinateAxisType | String | Lat |
attribute | latitude | actual_range | double | 33.1884, 42.4999 |
attribute | latitude | axis | String | Y |
attribute | latitude | colorBarMaximum | double | 90.0 |
attribute | latitude | colorBarMinimum | double | -90.0 |
attribute | latitude | coords | String | time |
attribute | latitude | instrument | String | GPS |
attribute | latitude | ioos_category | String | Location |
attribute | latitude | long_name | String | Latitude |
attribute | latitude | source | String | surface observation |
attribute | latitude | standard_name | String | latitude |
attribute | latitude | units | String | degrees_north |
attribute | latitude | valid_max | double | 90.0 |
attribute | latitude | valid_min | double | -90.0 |
variable | longitude | double | ||
attribute | longitude | _CoordinateAxisType | String | Lon |
attribute | longitude | actual_range | double | -70.8943, -60.59 |
attribute | longitude | axis | String | X |
attribute | longitude | colorBarMaximum | double | 180.0 |
attribute | longitude | colorBarMinimum | double | -180.0 |
attribute | longitude | coords | String | time |
attribute | longitude | instrument | String | GPS |
attribute | longitude | ioos_category | String | Location |
attribute | longitude | long_name | String | Longitude |
attribute | longitude | source | String | surface observation |
attribute | longitude | standard_name | String | longitude |
attribute | longitude | units | String | degrees_east |
attribute | longitude | valid_max | double | 180.0 |
attribute | longitude | valid_min | double | -180.0 |
variable | altitude | double | ||
attribute | altitude | _CoordinateAxisType | String | Height |
attribute | altitude | _CoordinateZisPositive | String | up |
attribute | altitude | actual_range | double | 18.0, 18.0 |
attribute | altitude | axis | String | Z |
attribute | altitude | colorBarMinimum | double | 0.0 |
attribute | altitude | coords | String | time |
attribute | altitude | ioos_category | String | Location |
attribute | altitude | long_name | String | height above mean sea level |
attribute | altitude | positive | String | up |
attribute | altitude | standard_name | String | altitude |
attribute | altitude | units | String | m |
attribute | altitude | valid_min | double | 0.0 |
variable | ccn_ss | double | ||
attribute | ccn_ss | _FillValue | double | NaN |
attribute | ccn_ss | actual_range | double | 0.1, 2.0 |
attribute | ccn_ss | colorBarMaximum | double | 100.0 |
attribute | ccn_ss | colorBarMinimum | double | 0.0 |
attribute | ccn_ss | coords | String | time |
attribute | ccn_ss | instrument | String | Cloud Condensation Nuclei Counter |
attribute | ccn_ss | ioos_category | String | Unknown |
attribute | ccn_ss | long_name | String | Supersaturation of CCN measurement |
attribute | ccn_ss | source | String | surface observation |
attribute | ccn_ss | units | String | percent |
variable | ccn | double | ||
attribute | ccn | _FillValue | double | NaN |
attribute | ccn | actual_range | double | 3.422, 1893.04 |
attribute | ccn | colorBarMaximum | double | 60000.0 |
attribute | ccn | colorBarMinimum | double | 0.0 |
attribute | ccn | coords | String | time |
attribute | ccn | instrument | String | Cloud Condensation Nuclei Counter |
attribute | ccn | ioos_category | String | Meteorology |
attribute | ccn | long_name | String | Cloud Condensation Nuclei Concentration at ccn_ss |
attribute | ccn | source | String | surface observation |
attribute | ccn | units | String | cm-3 |
attribute | ccn | valid_max | double | 50000.0 |
attribute | ccn | valid_min | double | 0.0 |
variable | ccn_cn_ratio | double | ||
attribute | ccn_cn_ratio | _FillValue | double | NaN |
attribute | ccn_cn_ratio | actual_range | double | 0.00642298, 1.04705 |
attribute | ccn_cn_ratio | colorBarMaximum | double | 1.5 |
attribute | ccn_cn_ratio | colorBarMinimum | double | 0.0 |
attribute | ccn_cn_ratio | coords | String | time |
attribute | ccn_cn_ratio | instrument | String | Cloud Condensation Nuclei Counter |
attribute | ccn_cn_ratio | ioos_category | String | Unknown |
attribute | ccn_cn_ratio | long_name | String | Ratio of CCN to CN |
attribute | ccn_cn_ratio | source | String | surface observation |
attribute | ccn_cn_ratio | valid_max | double | 1.0 |
attribute | ccn_cn_ratio | valid_min | double | 0.0 |