Instrumentation
The ASIRI: RAWI project's observational period was from February 1, 2015 to March 15, 2015.
The instrumentation techniques for each of the three island nations are documented.
Seychelles Instrumentation
A detailed list of the instrumentation used is found below. For major instruments, a photograph is provided to contextualize the location and the sophistication of the equipment. For major equipment, a brief description of the data collected further explains its use.
The Radiosonde System
Meteorological flux tower
- 2-m and 10-m sonic anemometers
- 2-m and 10-m LICOR H2O/CO2 gas analyzers
- 2-m and 10-m T/RH probes
- 10-m net radiometer for upwelling and downwelling short/longwave radiation
- Barometer
- Rain Gage
- Thermocouple
Ceilometer/X-met system
- Provides all basic meteorological data
- Data includes temperature, pressure, humidity, wind speed/direction
- Reports visibility
- Reports cloud heights and intensity (from ceilometer)
Other equipment:
- Halo Photonics Lidar
- Microwave Radiometer
- Sky camera
Singapore Instrumentation
- Sri Lanka InstrumentationLeosphere Doppler Lidar
- Barometer – high resolution
- Precipitation Gauge
- Tower 10 m, 1 meter booms, with two levels of fluxes, thermocouples, humidity, net radiometer
- Upward looking cloud camera
- XMET station (without ceilometer)
- AERONET Sun-photometer at E2 (Singapore supplied)
- Depolarizing Micro-pulse LID Upward looking cloud camera
Sri Lanka Instrumentation
- Halo Photonics Lidar
- Microwave Radiometer
- Radiosondes – at the Sri Lanka Met Office – 3 times a day
- Vaisala Ceilometer
- Precipitation Gauge 14 m tower from NARA, with two levels of fluxes, thermocouples, humidity, net radiometer
- NARA is offering a second station in Pulmude – we will have to decide.
- NARA site in Beruwala – currently operational (with a NRL tower)
- Barometer – high resolution (needs to be ordered)
- 1 LiCORS (humidity and CO2 fluxes) from Notre Dame, in case we have KH-20
- Upward looking cloud camera