Full Name Radio Occultation Sounder for the Atmosphere Status No longer operational
Instrument Agencies ASI, CONAE Maturity
Instrument Type Atmospheric temperature and humidity sounders and Precision orbit Geometry Occultation
Instrument Technology GNSS radio-occultation receiver Sampling Sounding
Data Access Constrained Access Data Format RINEX
Measurements and Applications Climate change studies. High-vertical resolution temperature-humidity sounding for NWP. Space weather.
Resolution Summary 300 km (horizontal), 0.5 km (vertical).
Swath Summary N/A (occultation); about 600 soundings/day.
Accuracy Summary Bending angle: 0.5 µ rad
Waveband Summary Around 1600 MHz (L1) and 1200 MHz (L2).
MW (~0.1 cm - ~100 cm)
L-Band (2 - 1 GHz)
Instrument Measurements
Measurements Overview
Atmospheric Humidity FieldsAtmospheric specific humidity (LT, HT, LS, HS&M, TC)
Atmospheric Temperature FieldsAtmospheric pressure (over land surface)
Atmospheric pressure (over sea surface)
Thematic Links Global Climate Observing System Essential Climate Variables (GCOS ECVs)
ECVDescriptionProduct(s)ECV Inventory 3.0 Record(s)
Pressure (surface) click here click here search ECV Inventory records
Water Vapour (upper air) click here click here search ECV Inventory records
Instrument Missions
SAC-D/Aquarius - SAC-D/Aquarius (2011 - 2015)