Datastream : AOSCCN
Aerosol Observing System (AOS): cloud condensation nuclei data
Active Dates
2005.03.04 - 2011.08.30
Measurement Categories
Aerosols, Cloud Properties
Originating Instrument
Aerosol Observing System (AOS)
Measurements
Only measurements considered scientifically relevant are shown below by default.
Show all measurements
| Measurement | Units | Variable |
|---|---|---|
| First stage monitor voltage | V (DC) | CCN_FirstStageMonitorVoltage ( time ) |
| AOS CCN sample pressure | hPa | CCN_P_sample ( time ) |
| CCN Proportional valve voltage | V | CCN_ProportionalValveVoltage ( time ) |
| AOS CCN volumetric flowrate of sample air | cm^3/minute | CCN_Q_sample ( time ) |
| AOS CCN volumetric flowrate of sheath air | cm^3/minute | CCN_Q_sheath ( time ) |
| AOS CCN temperature of the optical particle counter | degrees C | CCN_T_OPC ( time ) |
| AOS CCN temperature at top of column | degrees C | CCN_T_TEC1 ( time ) |
| AOS CCN temperature at middle of column | degrees C | CCN_T_TEC2 ( time ) |
| AOS CCN temperature at bottom of column | degrees C | CCN_T_TEC3 ( time ) |
| AOS CCN temperature of sample air at entrance to instrument | degrees C | CCN_T_inlet ( time ) |
| AOS CCN temperature of the nafion humidifier | degrees C | CCN_T_nafion ( time ) |
| AOS CCN temperature of sample air entering the column | degrees C | CCN_T_sample ( time ) |
| CCN temperature gradient | C | CCN_Temperature_Gradient ( time ) |
| Size of upper limit of each CCN bin | um | CCN_UpperSizeLimit ( num_bins ) |
| AOS CCN standard deviation of difference (CCN_T_TEC1 - CCN_T_TEC3) | degrees C | CCN_dT_TEC3_TEC1_StdDev ( time ) |
| AOS CCN OPC laser current | mA | CCN_laser_current ( time ) |
| AOS CCN sample supersaturation calculated by model) | % | CCN_ss_calc ( time ) |
| AOS CCN sample saturation setpoint value reported by instrument | % | CCN_ss_set ( time ) |
| Hexadecimal flag, non-zero value means instrument is not operating stably | unitless | CCN_temp_unstable_flag ( time ) |
| AOS number concentration of CCN | 1/cm^3 | N_CCN ( time ) |
| AOS bin number of lowest channel of OPC include in summation of N_CCN | unitless | N_CCN_bin_number ( time ) |
| AOS CCN number concentration by bin | unitless | N_CCN_dN ( time, num_bins ) |
| Altitude above mean sea level | m | alt |
| Base time in Epoch | seconds since 1970-1-1 0:00:00 0:00 | base_time |
| North latitude | degree_N | lat |
| East longitude | degree_E | lon |
| Time offset from midnight | time ( time ) | |
| Time offset from base_time | time_offset ( time ) |
Locations
- North Slope Alaska (NSA)
- Southern Great Plains (SGP)
- Central Facility, Lamont, OK (C1)
- Central Facility, Lamont, OK (C1)
- ARM Mobile Facility (FKB)
- Black Forest, Germany (M1)
- Black Forest, Germany (M1)
- ARM Mobile Facility (GRW)
- Graciosa Island, Azores, Portugal (M1)
- Graciosa Island, Azores, Portugal (M1)
- ARM Mobile Facility (HFE)
- Shouxian, Anhui, China (M1)
- Shouxian, Anhui, China (M1)
- ARM Mobile Facility (NIM)
- Niamey, Niger (M1)
- Niamey, Niger (M1)
- ARM Mobile Facility (PYE)
- Point Reyes, CA (M1)
- Point Reyes, CA (M1)
