Datastream : AOSHTDMA

AOS Humidified Tandem Differential Mobility Analyzer

Active Dates
2012.11.16 - 2017.04.23

Measurement Categories

Originating Instrument
Humidified Tandem Differential Mobility Analyzer (HTDMA)


Only measurements considered scientifically relevant are shown below by default.

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Measurement Units Variable
Concentration of aerosol 1/cm^3 aerosol_concentration ( time, bin )
Altitude above mean sea level m alt
Atomizer calibration status unitless atomizer ( time )
Base time in Epoch seconds since 1970-1-1 0:00:00 0:00 base_time
Bin number unitless bin ( bin )
Bin center value nm bin_center ( time, bin )
Bin width nm bin_width ( time, bin )
Dry aerosol diameter size instrument setting nm dry_diameter_setting ( time )
Dry aerosol particle relative humidity instrument setting % dry_rh_setting ( time )
Humid aerosol particle relative humidity % humid_rh ( time )
North latitude degree_N lat
East longitude degree_E lon
Number of distribution bins unitless num_bins ( time )
Aerosol sample flow rate liter/min sample_flow ( time )
Maximum aerosol particle diameter instrument setting nm scan_max_diameter_setting ( time )
Minimum aerosol particle diameter instrument setting nm scan_min_diameter_setting ( time )
Humidified DMA scanning time instrument setting s scan_time_setting ( time )
Sampling mode scan type unitless scan_type ( time )
Time offset from midnight time ( time )
Time offset from base_time time_offset ( time )
Total scan concentration over all bins 1/cm^3 total_concentration ( time )


Eastern North Atlantic
ENAC1 Browse DataGraciosa Island, Azores, Portugal
Southern Great Plains
SGPS01 Browse DataSupplemental 1, Lamont, OK
ARM Mobile Facility
ACXM1 Browse DataOff the Coast of California - NOAA Ship Ronald H. Brown; AMF2
ASIM1 Browse DataAscension Island, South Atlantic Ocean; AMF1
AWRM1 Browse DataMcMurdo Station Ross Ice Shelf, Antarctica; AMF2
MAGM1 Browse DataLos Angeles, CA to Honolulu, HI - container ship Horizon Spirit; AMF2
OLIM1 Browse DataOlikiok Point, Alaska; AMF3
PVCS1 Browse DataHighland Center, Cape Cod MA; MAOS
TMPS1 Browse DataU. of Helsinki Research Station (SMEAR II), Hyytiala, Finland; AOS


Cynthia Salwen
Brookhaven National Laboratory

Janek Uin
Brookhaven National Laboratory

Alice Cialella
Brookhaven National Laboratory
(631) 344-3286

Gunnar Senum
Brookhaven National Laboratory
(631) 344-3896

Stephen Springston
Brookhaven National Laboratory
(631) 344-4477