Microwave radiometer measurements of downwelling sky brightness temperature at 16 frequencies between 22.2 and 150 GHz. Data was collected at approximately 5-second resolution by two time-synced radiometers from Radiometer Physics GmbH, supported by the NSF's Arctic Observing Network. The dataset was last updated in December 2020.
Use Cases
- Retrieve precipitable water vapor and cloud liquid water path from brightness temperature measurements at 16 frequencies.
- Derive boundary layer temperature profiles using the multi-frequency sky brightness temperature data.
- Perform tip-curve analysis for in-field calibration using periodic horizon-to-horizon elevation scan data.
- Validate and calibrate atmospheric models with high-temporal-resolution (5-second) brightness temperature observations.
Strengths
- Measurements at 16 distinct frequencies between 22.2 and 150 GHz
- High temporal resolution of approximately 5 seconds per observation
- Radiometers calibrated with liquid nitrogen approximately 4 times per year
- Includes periodic elevation scan data from horizon to horizon for calibration
Limitations
- Dataset size, row count, and specific temporal coverage are unknown
- Contains only sky brightness temperatures; ancillary atmospheric data may be required for full analysis
- Geographic coverage is limited to the Summit station in the Arctic
Provenance
- Source
- NASA Earthdata, collected by SCIOPS organization.
- Collection Method
- Observations made by two time-synced Radiometer Physics GmbH radiometers, with raw data converted to netCDF format.
- Time Range
- null
- Freshness
- Data last updated on 2020-12-31; update frequency is null.
- Geography
- Summit station in the Arctic, supported by the NSF Arctic Observing Network.