Colorado State University PRT-6 radiometer data from the First ISCCP Regional Experiment Atlantic Stratocumulus Transition Experiment. The dataset contains passive infrared measurements within the 885-945 cm⁻¹ spectral band, sampled every 10 seconds during a field campaign in June 1992. The instrument was primarily pointed vertically upward, with brief intervals at multiple zenith angles.
Use Cases
- Calibrate satellite-derived cloud-top temperature estimates using the 885-945 cm⁻¹ infrared radiance measurements. Analyze cloud radiative properties by correlating measured radiance with zenith angles of 15, 30, 45, 60, and 75 degrees. Validate general circulation model (GCM) cloud parameterizations with high-temporal-resolution (10-second) infrared observations. Study the diurnal cycle of marine stratocumulus clouds using time-series voltage data linear to incident radiant power.
Strengths
- Data originates from a coordinated, multi-platform field experiment (FIRE) designed for model validation. Measurements have a high temporal resolution, with voltage averages recorded every 10 seconds. Spectral bandpass is precisely defined by an interference filter (885 to 945 inverse centimeters).
Limitations
- Dataset temporal coverage is limited to a single month (June 1992). Geographic coverage is restricted to the eastern North Atlantic Ocean during the ASTEX deployment. The primary data column (voltage signal) requires calibration to derive physical radiance units.
Provenance
- Source
- NASA Langley Research Center Atmospheric Science Data Center (LARC_ASDC).
- Collection Method
- Field observations from a PRT-6 chopped bolometer radiometer deployed during the FIRE ASTEX intensive field observation period.
- Time Range
- June 1992.
- Freshness
- null
- Geography
- Eastern North Atlantic Ocean.