The HSR1 Hyperspectral Radiometer (Prototype)

An innovative, easier and more affordable way to measure Solar Irradiances and Aerosol Optical Depth in challenging environments.

Tests with a prototype instrument, The HSR1 Hyperspectral Radiometer, have shown that Global and Diffuse irradiance and AOD can successfully be measured autonomously in inhospitable land-based locations and remote sea environments. The innovative prototype instrument is based on the Delta-T Devices SPN1 Sunshine Pyranometer, which has no moving parts, shade rings or motorised tracking.

We are currently assessing the commercial possibilities for this new instrument, and would be very grateful if you could complete a very short (two minute) SURVEY to help inform our decisions.

Aerosol Optical Depth (AOD) measurements are important because aerosols can affect respiratory health, climate change, and the safety of aircraft during volcanic events. However, routine Aerosol Optical Depth (AOD) surface-based observations in marine or other challenging environments are in short supply – because it is both difficult and expensive to operate conventional automatic sun photometers at these locations.

The new instrument has been developed and built by the SPN1 Pyranometer inventor John Wood, and has been tested by Tim Smyth of Plymouth Marine Laboratory in a sea trial which took place between the UK and the Falkland Islands. Corrections for the Field of View and the ship’s motion (derived from GPS sensors) were successfully developed and applied to the marine trials data, giving AOD values which compared well with a hand-held Microtops II sun photometer which was also used on the voyage.

 

Following this expedition the HSR1 Hyperspectral Radiometer was also tested on land in Valencia, Spain for a period of 18 months against a reference AERONET sun photometer by Victor Estelles of the Department of Physics and Thermodynamics at the University of Valencia.

Analysis of the subsequent data obtained in Valencia – after transferring the reference CIMEL sun photometer calibration across, and applying corrections for the Field of View differences and Rayleigh scattering, gave an RMSE AOD error 0.02 – 0.03 compared to the CIMEL. This accuracy is consistent with that obtained from well-calibrated field (i.e. secondary standard) tracking sun photometers. View research paper

 

Access to HRS1 prototypes

A small number of prototype HRS1 Hyperspectral Radiometer Systems are available (at cost price).

If you are interested in working with the instrument during the latter stages of product development (or have any questions), please contact Delta-T Devices’s Dr Nick Webb (nick.webb@delta-t.co.uk).

We are currently assessing the commercial possibilities for this new instrument, and would be very grateful if you could complete a very short (two minute) SURVEY to help inform our decisions.

Back to SPN1 Page