scholarly journals A high dynamic radiation measurement instrument: the Bolometric Oscillation Sensor (BOS)

2015 ◽  
Vol 4 (1) ◽  
pp. 89-98 ◽  
Author(s):  
P. Zhu ◽  
M. van Ruymbeke ◽  
Ö. Karatekin ◽  
J.-P. Noël ◽  
G. Thuillier ◽  
...  
Keyword(s):  
Transfer Function ◽  
Solar Irradiance ◽  
Measurement Instrument ◽  
Total Solar Irradiance ◽  
Radiation Measurement ◽  
Broadband Radiation ◽  
Measurement Principle ◽  
Coated Surface ◽  
Infrared Wavelengths ◽  
Main Detector

Abstract. The Bolometric Oscillation Sensor (BOS) is a broadband radiation measurement instrument onboard the PICARD satellite that was active between 2010 and 2014. The main detector is a thermistor attached black coated surface, which was permanently exposed to space without any optical and aperture accessories. The temperature measurements are used within a transfer function to determine variations in incoming solar irradiance as well as the terrestrial radiation. In the present article, the measurement principle of the BOS and its transfer function are presented. The performance of the instrument is discussed based on laboratory experiments and space observations from the PICARD satellite. The comparison of the short-term variation of total solar irradiance (TSI) with absolute radiometers such as VIRGO/SOHO and TIM/SORCE over the same period of time suggests that the BOS is a relatively much simpler but very effective sensor for monitoring electromagnetic radiation variations from visible to infrared wavelengths.

scholarly journals A high dynamic radiation measurements instrument: the Bolometric Oscillation Sensor (BOS)

2014 ◽  
Vol 4 (2) ◽  
pp. 627-651
Author(s):  
P. Zhu ◽  
M. van Ruymbeke ◽  
Ö. Karatekin ◽  
J.-P. Noël ◽  
G. Thuillier ◽  
...  
Keyword(s):  
Transfer Function ◽  
Solar Irradiance ◽  
Measurement Instrument ◽  
Total Solar Irradiance ◽  
Broadband Radiation ◽  
Measurement Principle ◽  
Coated Surface ◽  
Infrared Wavelengths ◽  
High Dynamic ◽  
Main Detector

Abstract. The bolometric oscillation sensor (BOS) is a broadband radiation measurement instrument onboard the PICARD satellite that has been active between 2010 and 2014. The main detector is a thermistor attached black coated surface, which was permanently exposed to space without any optical and aperture accessories. The temperature measurements are used within a transfer function to determine variations in incoming solar irradiance as well as the terrestrial radiation. In the present article, the measurement principle of BOS and its transfer function are presented. The performance of the instrument is discussed based on laboratory experiments and space observations from the PICARD satellite. The comparison of the short term variation of Total Solar Irradiance (TSI) with absolute radiometers such as VIRGO/SOHO and TIM/SORCE over the same period of time, suggests that BOS is a relatively much simpler but very effective sensor to monitor electromagnetic radiation variations from visible to infrared wavelengths.

The Fengyun-3E/Joint Total Solar Irradiance Absolute Radiometer: Instrument Design, Characterization, and Calibration

Solar Physics ◽  
2021 ◽  
Vol 296 (3) ◽  
Author(s):  
Baoqi Song ◽  
Xin Ye ◽  
Wolfgang Finsterle ◽  
Manfred Gyo ◽  
Matthias Gander ◽  
...  
Keyword(s):  
Solar Irradiance ◽  
Total Solar Irradiance ◽  
Instrument Design

Long-term variations in total solar irradiance

Solar Physics ◽  
1994 ◽  
Vol 152 (1) ◽  
pp. 13-21 ◽  
Author(s):  
Judit M. Pap ◽  
Richard C. Willson ◽  
Claus Fr�hlich ◽  
Richard F. Donnelly ◽  
Larry Puga
Keyword(s):  
Solar Irradiance ◽  
Total Solar Irradiance ◽  
Long Term Variations

scholarly journals Stellar activity, differential rotation, and exoplanets

2010 ◽  
Vol 6 (S273) ◽  
pp. 89-95 ◽  
Author(s):  
A. F. Lanza
Keyword(s):  
Time Series ◽  
Differential Rotation ◽  
Solar Irradiance ◽  
Giant Planet ◽  
Total Solar Irradiance ◽  
Short Term ◽  
Stellar Activity ◽  
Transiting Planets ◽  
Spot Model ◽  
Spot Activity

AbstractThe photospheric spot activity of some of the stars with transiting planets discovered by the CoRoT space experiment is reviewed. Their out-of-transit light modulations are fitted by a spot model previously tested with the total solar irradiance variations. This approach allows us to study the longitude distribution of the spotted area and its variations versus time during the five months of a typical CoRoT time series. The migration of the spots in longitude provides a lower limit for the surface differential rotation, while the variation of the total spotted area can be used to search for short-term cycles akin the solar Rieger cycles. The possible impact of a close-in giant planet on stellar activity is also discussed.

Total Solar Irradiance Trend During Solar Cycles 21 and 22

Science ◽  
1997 ◽  
Vol 277 (5334) ◽  
pp. 1963-1965 ◽  
Author(s):  
Richard C. Willson
Keyword(s):  
Solar Irradiance ◽  
Total Solar Irradiance ◽  
Solar Cycles

Data Fusion of Total Solar Irradiance Composite Time Series Using 40 years of Satellite Measurements: First Results 

2021 ◽  
Author(s):  
Jean-Philippe Montillet ◽  
Wolfgang Finsterle ◽  
Werner Schmutz ◽  
Margit Haberreiter ◽  
Rok Sikonja
Keyword(s):  
Time Series ◽  
Data Fusion ◽  
Solar Irradiance ◽  
Total Solar Irradiance ◽  
Maunder Minimum ◽  
The Sun ◽  
Climate Reconstructions ◽  
The Earth ◽  
First Results ◽  
The Difference

<p><span>Since the late 70’s, successive satellite missions have been monitoring the sun’s activity, recording total solar irradiance observations. These measurements are important to estimate the Earth’s energy imbalance, </span><span>i.e. the difference of energy absorbed and emitted by our planet. Climate modelers need the solar forcing time series in their models in order to study the influence of the Sun on the Earth’s climate. With this amount of TSI data, solar irradiance reconstruction models  can be better validated which can also improve studies looking at past climate reconstructions (e.g., Maunder minimum). V</span><span>arious algorithms have been proposed in the last decade to merge the various TSI measurements over the 40 years of recording period. We have developed a new statistical algorithm based on data fusion.  The stochastic noise processes of the measurements are modeled via a dual kernel including white and coloured noise.  We show our first results and compare it with previous releases (PMOD,ACRIM, ... ). </span></p>

scholarly journals Uncertainty Model for Total Solar Irradiance Estimation on Australian Rooftops

2017 ◽  
Vol 23 ◽  
pp. 01004
Author(s):  
Hassan Al-Saadi ◽  
Rastko Zivanovic ◽  
Said Al-Sarawi
Keyword(s):  
Solar Irradiance ◽  
Total Solar Irradiance ◽  
Uncertainty Model
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