Studies of Emissions and Atmospheric Composition, Clouds and Climate Coupling by Regional Surveys

Studies of Emissions and Atmospheric Composition, Clouds and Climate Coupling by Regional Surveys (SEAC4RS) airborne field study was conducted in August and September of 2013. The field operation was based in Houston, Texas. The primary SEAC4RS science objectives are: to determine how pollutant emissions are redistributed via deep convection throughout the troposphere; to determine the evolution of gases and aerosols in deep convective outflow and the implications for UT/LS chemistry; to identify the influences and feedbacks of aerosol particles from anthropogenic pollution and biomass burning on meteorology and climate through changes in the atmospheric heat budget (i.e., semi-direct effect) or through microphysical changes in clouds (i.e., indirect effects); and lastly, to serve as a calibration and validation test bed for future satellite instruments and missions.

The airborne observational data were collected from three aircraft platforms: the NASA DC-8, ER-2, and SPEC LearJet. Both the NASA DC-8 and ER-2 aircraft were instrumented for comprehensive in-situ and remote sensing measurements of the trace gas, aerosol properties, and cloud properties. In addition, radiative fluxes and meteorological parameters were also recorded. The NASA DC-8 was mostly responsible for tropospheric sampling, while the NASA ER-2 was operating in the lower stratospheric regime. The SPEC LearJet was dedicated to in-situ cloud characterizations. To accomplish the science objectives, the flight plans were designed to investigate the influence of biomass burning and pollution, their temporal evolution, and ultimately, impacts on meteorological processes which can, in turn, feedback on regional air quality. With respect to meteorological feedbacks, the opportunity to examine the impact of polluting aerosols on cloud properties and dynamics was of particular interest.

For more information regarding the Airborne Multi-angle SpectroPolarimetric Imager (AirMSPI) data collected during SEAC4RS, please refer to: AirMSPI SEAC4RS Ellipsoid Data, and AirMSPI SEAC4RS Terrain Data.

Disciplines:   Field Campaigns
Collection Disciplines Spatial Temporal
SEAC4RS_Aerosol_AircraftInSitu_DC8_Data_1
SEAC4RS DC-8 Aircraft In-Situ Aerosol Data
Field Campaigns Spatial Coverage:
(19, 51), (-127, -79)
Temporal Coverage:
2013-08-02 - 2013-11-25
SEAC4RS_Aerosol_AircraftInSitu_Learjet_Data_1
SEAC4RS Learjet Aircraft In-Situ Aerosol Data
Field Campaigns Spatial Coverage:
(26, 38), (-101, -85)
Temporal Coverage:
2013-09-09 - 2013-09-22
SEAC4RS_AircraftRemoteSensing_DIAL_DC8_Data_1
SEAC4RS DC-8 Aircraft Remotely Sensed Differential Absorption Lidar Data
Field Campaigns Spatial Coverage:
(18, 51), (-127, -79)
Temporal Coverage:
2013-08-02 - 2013-09-23
SEAC4RS_AircraftRemoteSensing_RSP_ER2_Data_1
SEAC4RS ER-2 Aircraft Remotely Sensed Research Scanning Polarimeter Aerosol and Cloud Data
Field Campaigns Spatial Coverage:
(15, 53), (-128, -82)
Temporal Coverage:
2013-08-01 - 2013-09-23
SEAC4RS_Analysis_Data_1
SEAC4RS Analysis and Ancillary Data
Field Campaigns Spatial Coverage:
(18, 52), (-126, -79)
Temporal Coverage:
2013-07-30 - 2013-09-24
SEAC4RS_Cloud_AircraftInSitu_DC8_Data_1
SEAC4RS DC-8 Aircraft In-Situ Cloud Data
Field Campaigns Spatial Coverage:
(19, 51), (-126, -80)
Temporal Coverage:
2013-08-02 - 2013-09-24
SEAC4RS_Cloud_AircraftInSitu_ER2_Data_1
SEAC4RS ER-2 Aircraft In-Situ Cloud Data
Field Campaigns Spatial Coverage:
(15, 53), (-127, -83)
Temporal Coverage:
2013-08-01 - 2013-09-23
SEAC4RS_Cloud_AircraftInSitu_Learjet_Data_1
SEAC4RS Learjet Aircraft In-Situ Cloud Data
Field Campaigns Spatial Coverage:
(27, 38), (-100, -85)
Temporal Coverage:
2013-08-12 - 2013-09-22
SEAC4RS_jValue_AircraftInSitu_DC8_Data_1
SEAC4RS DC-8 Aircraft In-Situ Photolysis Rate Data
Field Campaigns Spatial Coverage:
(19, 51), (-127, -80)
Temporal Coverage:
2013-08-02 - 2013-09-24
SEAC4RS_Merge_Data_1
SEAC4RS Merge Data Files
Field Campaigns Spatial Coverage:
(15, 53), (-126, -79)
Temporal Coverage:
2013-08-06 - 2013-09-24
SEAC4RS_MetNav_AircraftInSitu_DC8_Data_1
SEAC4RS DC-8 Aircraft In-Situ Meteorological and Navigational Data
Field Campaigns Spatial Coverage:
(19, 51), (-127, -79)
Temporal Coverage:
2013-08-02 - 2013-09-24
SEAC4RS_MetNav_AircraftInSitu_ER2_Data_1
SEAC4RS ER-2 Aircraft In-Situ Meteorological and Navigational Data
Field Campaigns Spatial Coverage:
(15, 53), (-128, -82)
Temporal Coverage:
2013-08-01 - 2013-09-23
SEAC4RS_MetNav_AircraftInSitu_Learjet_Data_1
SEAC4RS Learjet Aircraft In-Situ Meteorological and Navigational Data
Field Campaigns Spatial Coverage:
(27, 38), (-101, -84)
Temporal Coverage:
2013-08-12 - 2013-09-22
SEAC4RS_Miscellaneous_DC8_Data_1
SEAC4RS DC-8 Aircraft Miscellaneous Data
Field Campaigns Spatial Coverage:
(19, 51), (-127, -79)
Temporal Coverage:
2013-08-06 - 2013-09-23
SEAC4RS_Miscellaneous_ER2_Data_1
SEAC4RS ER-2 Aircraft Miscellaneous Data
Field Campaigns Spatial Coverage:
(15, 53), (-127, -82)
Temporal Coverage:
2013-08-06 - 2013-09-23
SEAC4RS_Radiation_AircraftInSitu_DC8_Data_1
SEAC4RS DC-8 Aircraft In-Situ Radiation Data
Field Campaigns Spatial Coverage:
(19, 51), (-127, -79)
Temporal Coverage:
2013-08-02 - 2013-09-24
SEAC4RS_Radiation_AircraftInSitu_ER2_Data_1
SEAC4RS ER-2 Aircraft In-Situ Radiation Data
Field Campaigns Spatial Coverage:
(15, 53), (-127, -82)
Temporal Coverage:
2013-08-01 - 2013-09-24
SEAC4RS_Sondes_Data_1
SEAC4RS Radiosonde/Ozonesonde Data
Field Campaigns Spatial Coverage:
(15, 53), (-126, -80)
Temporal Coverage:
2013-08-07 - 2013-09-27
SEAC4RS_TraceGas_AircraftInSitu_DC8_Data_1
SEAC4RS DC-8 Aircraft In-Situ Trace Gas Data
Field Campaigns Spatial Coverage:
(19, 51), (-127, -79)
Temporal Coverage:
2013-08-02 - 2013-09-24
SEAC4RS_TraceGas_AircraftInSitu_ER2_Data_1
SEAC4RS ER-2 Aircraft In-Situ Trace Gas Data
Field Campaigns Spatial Coverage:
(15, 53), (-128, -82)
Temporal Coverage:
2013-08-01 - 2013-09-23