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Dataset Title:  PMEL Atmospheric Chemistry NEAQAS2002 irregular 10 minute data Subscribe RSS
Institution:  PMEL Atmospheric Chemistry   (Dataset ID: Irregular10Minute_6d3c_9d7e_422c)
Range: longitude = -74.052 to -67.319°E, latitude = 38.657 to 44.513°N, time = 2002-07-15T12:03:42Z to 2002-08-08T00:34:40Z
Information:  Summary ? | License ? | FGDC | ISO 19115 | Metadata | Background (external link) | Subset | Data Access Form
 
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Things You Can Do With Your Graphs

Well, you can do anything you want with your graphs, of course. But some things you might not have considered are:

The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  traj {
    Float64 actual_range 1.0, 1.0;
    String axis "E";
    String long_name "Traj";
    String point_spacing "even";
  }
  id {
    String cf_role "trajectory_id";
    String long_name "trajectory id";
  }
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.0267346219999998e+9, 1.0287668800000002e+9;
    String axis "T";
    String ioos_category "Time";
    String long_name "Time";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float32 _FillValue -1.0e+34;
    Float32 actual_range -74.052, -67.319;
    String axis "X";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    Int32 epic_code 502;
    String FORTRAN_format "f10.4";
    Float32 gap_value -999.0;
    String generic_name "lon";
    String history "From NEAQS2002_PILS_copy";
    String instr_id "GPS";
    String ioos_category "Location";
    String long_name "Longitude";
    Float32 max_value 360.0;
    Float32 min_value -180.0;
    Float32 missing_value -1.0e+34;
    String name "LON";
    String plot_lab "LONGT";
    String standard_name "longitude";
    String units "degrees_east";
  }
  lon360 {
    Float32 _FillValue -1.0e+34;
    Float32 actual_range 285.948, 292.681;
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String history "From NEAQS2002_PILS_copy";
    String long_name "longitude 360";
    Float32 missing_value -1.0e+34;
    String standard_name "longitude";
    String units "degrees_east";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float32 _FillValue -1.0e+34;
    Float32 actual_range 38.657, 44.513;
    String axis "Y";
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    Int32 epic_code 500;
    String FORTRAN_format "f10.4";
    Float32 gap_value -999.0;
    String generic_name "lat";
    String history "From NEAQS2002_PILS_copy";
    String instr_id "GPS";
    String ioos_category "Location";
    String long_name "Latitude";
    Float32 max_value 90.0;
    Float32 min_value -90.0;
    Float32 missing_value -1.0e+34;
    String name "LAT";
    String plot_lab "LAT";
    String standard_name "latitude";
    String units "degrees_north";
  }
  DUR_628 {
    Float32 _FillValue -1.0e+34;
    Float32 actual_range 10.0, 10.0;
    Int32 epic_code 628;
    Float32 gap_value -999.0;
    String history "From NEAQS2002_PILS_copy";
    String instr_id "*";
    String long_name "Sample Duration";
    Float32 max_value 59.0;
    Float32 min_value 0.0;
    Float32 missing_value -1.0e+34;
    String name "DUR";
    String plot_lab "Duration";
    String units "min";
  }
  TIM_627 {
    Float32 _FillValue -1.0e+34;
    Float32 actual_range 196.506, 220.0275;
    Int32 epic_code 627;
    Float32 gap_value -999.0;
    String generic_name "time";
    String history "From NEAQS2002_PILS_copy";
    String instr_id "*";
    String long_name "Julian Days";
    Float32 max_value 365.9999;
    Float32 min_value 1.0;
    Float32 missing_value -1.0e+34;
    String name "TIM";
    String plot_lab "DayOfYear";
  }
  Cl_1944 {
    Float32 _FillValue -1.0e+34;
    Float32 actual_range 0.0, 11.20704;
    Int32 epic_code 1944;
    Float32 gap_value -999.0;
    String history "From NEAQS2002_PILS_copy";
    String instr_id "PILS (Particle-Into-Liquid-Sampler)";
    String long_name "Soluble Submicron Aerosol Chloride";
    Float32 max_value 50.0;
    Float32 min_value 0.0;
    Float32 missing_value -1.0e+34;
    String name "Cl";
    String plot_lab "subCl";
    String units "ug/m^3";
  }
  Br_1989 {
    Float32 _FillValue -1.0e+34;
    Float32 actual_range 0.0, 0.13488;
    Int32 epic_code 1989;
    Float32 gap_value -999.0;
    String history "From NEAQS2002_PILS_copy";
    String instr_id "PILS (Particle-Into-Liquid-Sampler)";
    String long_name "Soluble Submicron Aerosol Bromide";
    Float32 max_value 50.0;
    Float32 min_value 0.0;
    Float32 missing_value -1.0e+34;
    String name "Br";
    String plot_lab "subBr";
    String units "ug/m^3";
  }
  NO3_1947 {
    Float32 _FillValue -1.0e+34;
    Float32 actual_range 0.0, 10.06371;
    Float64 colorBarMaximum 50.0;
    Float64 colorBarMinimum 0.0;
    Int32 epic_code 1947;
    Float32 gap_value -999.0;
    String history "From NEAQS2002_PILS_copy";
    String instr_id "PILS (Particle-Into-Liquid-Sampler)";
    String long_name "Soluble Submicron Aerosol Nitrate";
    Float32 max_value 50.0;
    Float32 min_value 0.0;
    Float32 missing_value -1.0e+34;
    String name "NO3";
    String plot_lab "subNO3";
    String standard_name "mole_concentration_of_nitrate_in_sea_water";
    String units "ug/m^3";
  }
  SO4_1950 {
    Float32 _FillValue -1.0e+34;
    Float32 actual_range 0.0, 16.18989;
    Int32 epic_code 1950;
    Float32 gap_value -999.0;
    String history "From NEAQS2002_PILS_copy";
    String instr_id "PILS (Particle-Into-Liquid-Sampler)";
    String long_name "Soluble Submicron Aerosol Sulfate";
    Float32 max_value 50.0;
    Float32 min_value 0.0;
    Float32 missing_value -1.0e+34;
    String name "SO4";
    String plot_lab "subSO4";
    String units "ug/m^3";
  }
  Oxlate_1986 {
    Float32 _FillValue -1.0e+34;
    Float32 actual_range 0.0, 0.6099616;
    Int32 epic_code 1986;
    Float32 gap_value -999.0;
    String history "From NEAQS2002_PILS_copy";
    String instr_id "PILS (Particle-Into-Liquid-Sampler)";
    String long_name "Soluble Submicron Aerosol Oxalate";
    Float32 max_value 50.0;
    Float32 min_value 0.0;
    Float32 missing_value -1.0e+34;
    String name "Oxlate";
    String plot_lab "subOxalate";
    String units "ug/m^3";
  }
  Na_1920 {
    Float32 _FillValue -1.0e+34;
    Float32 actual_range 0.0, 8.82112;
    Int32 epic_code 1920;
    Float32 gap_value -999.0;
    String history "From NEAQS2002_PILS_copy";
    String instr_id "PILS (Particle-Into-Liquid-Sampler)";
    String long_name "Soluble Submicron Aerosol Sodium";
    Float32 max_value 50.0;
    Float32 min_value 0.0;
    Float32 missing_value -1.0e+34;
    String name "Na";
    String plot_lab "subNa";
    String units "ug/m^3";
  }
  NH4_1923 {
    Float32 _FillValue -1.0e+34;
    Float32 actual_range 0.0, 4.13993;
    Float64 colorBarMaximum 5.0;
    Float64 colorBarMinimum 0.0;
    Int32 epic_code 1923;
    Float32 gap_value -999.0;
    String history "From NEAQS2002_PILS_copy";
    String instr_id "PILS (Particle-Into-Liquid-Sampler)";
    String long_name "Soluble Submicron Aerosol Ammonium";
    Float32 max_value 50.0;
    Float32 min_value 0.0;
    Float32 missing_value -1.0e+34;
    String name "NH4";
    String plot_lab "subNH4";
    String standard_name "mole_concentration_of_ammonium_in_sea_water";
    String units "ug/m^3";
  }
  K_1926 {
    Float32 _FillValue -1.0e+34;
    Float32 actual_range 0.0, 7.01764;
    Int32 epic_code 1926;
    Float32 gap_value -999.0;
    String history "From NEAQS2002_PILS_copy";
    String instr_id "PILS (Particle-Into-Liquid-Sampler)";
    String long_name "Soluble Submicron Aerosol Potassium";
    Float32 max_value 50.0;
    Float32 min_value 0.0;
    Float32 missing_value -1.0e+34;
    String name "K";
    String plot_lab "subK";
    String units "ug/m^3";
  }
  Mg_1929 {
    Float32 _FillValue -1.0e+34;
    Float32 actual_range 0.0, 0.82922;
    Int32 epic_code 1929;
    Float32 gap_value -999.0;
    String history "From NEAQS2002_PILS_copy";
    String instr_id "PILS (Particle-Into-Liquid-Sampler)";
    String long_name "Soluble Submicron Aerosol Magnesium";
    Float32 max_value 50.0;
    Float32 min_value 0.0;
    Float32 missing_value -1.0e+34;
    String name "Mg";
    String plot_lab "subMg";
    String units "ug/m^3";
  }
  Ca_1932 {
    Float32 _FillValue -1.0e+34;
    Float32 actual_range 0.0, 1.36726;
    Int32 epic_code 1932;
    Float32 gap_value -999.0;
    String history "From NEAQS2002_PILS_copy";
    String instr_id "PILS (Particle-Into-Liquid-Sampler)";
    String long_name "Soluble Submicron Aerosol Calcium";
    Float32 max_value 50.0;
    Float32 min_value 0.0;
    Float32 missing_value -1.0e+34;
    String name "Ca";
    String plot_lab "subCa";
    String units "ug/m^3";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "Trajectory";
    String cdm_trajectory_variables "traj, id";
    String Conventions "CF-1.6, COARDS, ACDD-1.3";
    String creation_date "16:30  5-NOV-03";
    String creator_email "pmel.info@noaa.gov";
    String creator_name "PMEL Atmospheric Chemistry";
    String creator_url "https://www.pmel.noaa.gov/";
    Float64 Easternmost_Easting -67.319;
    String featureType "Trajectory";
    Float64 geospatial_lat_max 44.513;
    Float64 geospatial_lat_min 38.657;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -67.319;
    Float64 geospatial_lon_min -74.052;
    String geospatial_lon_units "degrees_east";
    String history 
"FERRET V7.01 (beta/debug) 19-Aug-16
2024-05-24T16:51:56Z (local files)
2024-05-24T16:51:56Z https://data.pmel.noaa.gov/pmel/tabledap/Irregular10Minute_6d3c_9d7e_422c.das";
    String infoUrl "http://saga.pmel.noaa.gov/";
    String institution "PMEL Atmospheric Chemistry";
    String keywords "aerosol, ammonia, ammonium, atmospheric, Br_1989, bromide, Ca_1932, calcium, chemistry, chloride, Cl_1944, concentration, data, days, DUR_628, duration, Earth Science > Oceans > Ocean Chemistry > Ammonia, Earth Science > Oceans > Ocean Chemistry > Nitrate, environmental, irregular, julian, K_1926, laboratory, latitude, lon360, longitude, magnesium, marine, Mg_1929, minute, mole, mole_concentration_of_ammonium_in_sea_water, mole_concentration_of_nitrate_in_sea_water, n02, Na_1920, neaqas2002, nh4, NH4_1923, nitrate, no3, NO3_1947, noaa, ocean, oceans, oxalate, Oxlate_1986, pacific, pmel, potassium, sample, sea, seawater, SO4_1950, sodium, soluble, submicron, sulfate, TIM_627, time, traj, trajectory, water";
    String keywords_vocabulary "GCMD Science Keywords";
    String license 
"Data Licenses / Data Usage Restrictions
The data may be used and redistributed for free but is not intended
for legal use, since it may contain inaccuracies. Neither the data
Contributor, ERD, NOAA, nor the United States Government, nor any
of their employees or contractors, makes any warranty, express or
implied, including warranties of merchantability and fitness for a
particular purpose, or assumes any legal liability for the accuracy,
completeness, or usefulness, of this information.

Unless otherwise noted, data served through this ERDDAP server are 
not quality controlled.  Users may need to do quality control when using 
these data. These data are made available at the users own risk.";
    Float64 Northernmost_Northing 44.513;
    String REMARK_01 "Aerosol Chemistry data from R/V RONALD H. BROWN during NEAQS 2002";
    String REMARK_02 "NOAA PMEL PILS Chemistry Data";
    String REMARK_03 "Contact person:  Trish Quinn, Patricia.K.Quinn@noaa.gov";
    String REMARK_04 "          See Weber et al. (2001) for a description of the PILS (Particle-Into-L";
    String REMARK_05 "The common aerosol inlet (heated to maintain the sample air at 55 +/- 5% RH) was";
    String REMARK_06 "to deliver aerosol to the PILS. A Berner-type impactor with a 50% aerodynamic cu";
    String REMARK_07 "diameter of 1.1 um was upstream of the PILS and sampled air at 55% RH.In order t";
    String REMARK_08 "a 1.1 um cut off diameter, the impactor must have 30 slpm of flow at all times.";
    String REMARK_09 "The PILS itself runs at 15 slpm with the flow controlled by a critical orifice.T";
    String REMARK_10 "30 slpm through the impactor, a make up flow through a bypass line was added of";
    String REMARK_11 "Unfortunately, flow through the bypass line was switched on and off with the sec";
    String REMARK_12 "control that is applied to the impactor sampling. Hence, there were times when";
    String REMARK_13 "the flow through the impactor upstream of the PILS was less than 30 slpm which y";
    String REMARK_14 "a cut off diameter greater than 1.1 um. This change to a larger size cut will ha";
    String REMARK_15 "greatest effect on chemical species that are found primarily in the coarse mode,";
    String REMARK_16 "sea salt components and nitrate. The change in cut size will not have a large ef";
    String REMARK_17 "on species that are found primarily in the accumulation mode (e.g., SO4 and NH4)";
    String REMARK_18 "This data set contains all data regardless of size cut. The data set \"NEAQS2002_";
    String REMARK_19 "contains only data for a flow of 30 slpm through the impactor and a cut off diam";
    String REMARK_20 "1.1 um.";
    String REMARK_21 "  Three denuders were located in series after the impactor. These were";
    String REMARK_22 "1) a denuder with carbon-impregnated filter strips to remove gas phase organics,";
    String REMARK_23 "2) a URG denuder coated with sodium carbonate for the removal of gas phase aceds";
    String REMARK_24 "3) a URG denuder coated with citric acid to remove gas phase bases.";
    String REMARK_25 "The PILS was operated at 15 lpm.  Liquid sample flow from the PILS went simultan";
    String REMARK_26 "to a cation IC and an anion IC. A Metrosep C2-100 column was used to analyze the";
    String REMARK_27 "(Na, NH4, K, Mg, and Ca) with a 2.5 mM MSA eluant. A Metrosep Supp 5-150 column";
    String REMARK_28 "to analyze the anions (Cl, Br, NO3, SO4, oxalate) using a 4 mM carbonate/1 mM bi";
    String REMARK_29 "eluant. Samples were collected and analyzed every 15 min.";
    String REMARK_30 "The time stamp (in YYYY MM DD HH MM SS )in the file denotes the start of the sam";
    String REMARK_31 "sample entered the aerosol inlet. It took 1.5 min to transit from the aerosol in";
    String REMARK_32 "the sample loop and then 10 min to fill the loop.";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 38.657;
    String standard_name_vocabulary "CF Standard Name Table v29";
    String subsetVariables "traj, id";
    String summary "Pacific Marine Environmental Laboratory (PMEL) Atmospheric Chemistry New England Air Quality Study - 2002 irregular 10 minute data";
    String time_coverage_end "2002-08-08T00:34:40Z";
    String time_coverage_start "2002-07-15T12:03:42Z";
    String TIME_PAR "year month day hour minute second";
    String title "PMEL Atmospheric Chemistry NEAQAS2002 irregular 10 minute data";
    Float64 Westernmost_Easting -74.052;
  }
}

 

Using tabledap to Request Data and Graphs from Tabular Datasets

tabledap lets you request a data subset, a graph, or a map from a tabular dataset (for example, buoy data), via a specially formed URL. tabledap uses the OPeNDAP (external link) Data Access Protocol (DAP) (external link) and its selection constraints (external link).

The URL specifies what you want: the dataset, a description of the graph or the subset of the data, and the file type for the response.

Tabledap request URLs must be in the form
https://coastwatch.pfeg.noaa.gov/erddap/tabledap/datasetID.fileType{?query}
For example,
https://coastwatch.pfeg.noaa.gov/erddap/tabledap/pmelTaoDySst.htmlTable?longitude,latitude,time,station,wmo_platform_code,T_25&time>=2015-05-23T12:00:00Z&time<=2015-05-31T12:00:00Z
Thus, the query is often a comma-separated list of desired variable names, followed by a collection of constraints (e.g., variable<value), each preceded by '&' (which is interpreted as "AND").

For details, see the tabledap Documentation.


 
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