Accurate Determination of the TOA Solar Spectral NIR Irradiance Using a Primary Standard Source and the Bouguer–Langley Technique

Bolsée, David; Pereira, Nuno; Decuyper, W.; Gillotay, D.; Yu, Huan; Sperfeld, Peter; Pape, S.; Cuevas, E.; Redondas, Alberto; Hernandéz, Y.; Weber, Mark

doi:10.1007/s11207-014-0474-1

Cited by 26 publications

(63 citation statements)

References 39 publications

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“…These lamps (named D 1 and D 2 ) have an integrated MgF 2 lens for collimation, replacing the front window. Their collimated beam is collected by a concave mirror Al + MgF 2 which is coated to ensure the diffuser is well illuminated (Thuillier et al 2009;Bolsée 2012). A field lens followed by an actuator is inserted between the exit slit and the detector to condense, homogenize and attenuate (when required) the signal reaching the detector.…”

Section: Instrument Descriptionmentioning

confidence: 99%

“…From grating dispersion theory, given the relationship between the angles of incidence and diffraction of the light, the grating groove properties and the wavelength, and knowing the mechanical connection between motor and grating, the following analytic function was derived by Bolsée (2012):…”

Section: Wavelength Scale Of Solar/solspecmentioning

confidence: 99%

“…At this step, we normalize the linearized signal S net to the level that would have been obtained in the PTB temperature environment. It is performed using a tabulated curve of the temperature sensitivity coefficient α T , relevant for the Cs 2 Te photocathode and the photon counting mode as discussed in Thuillier et al (2009) and Bolsée (2012). The solar blind PMT is more sensitive at lower temperatures (α T < 0) for wavelengths shorter than 290 nm.…”

Section: Thermal Correctionsmentioning

confidence: 99%

“…The blackbody source BB3200pg at the PTB was used in June 2007 for the absolute calibration of SOLAR/SOLSPEC above 200 nm. The blackbody is a primary standard for the realization and dissemination of spectral irradiance; it is described in detail in Sperfeld et al (1998), Sperfeld et al (2000), Sperfeld et al (2010) and Sapritsky et al (1997) and summarized in Bolsée et al (2014) for SO-LAR/SOLSPEC applications. The blackbody provides a very stable reference source of known spectral radiance using Planck's law.…”

Section: Absolute Radiometric Calibrationmentioning

confidence: 99%

“…The operating principle was to have one lamp that would be used monthly during the mission, while the second lamp was to be used after each solar spectrum measurement. We used an algorithm developed for the SUSIM experiment, described in detail by Floyd et al (1996) and Prinz et al (1996), and adapted for SOLSPEC by Bolsée (2012). The principle is that for lamps proven to have the same aging rate (such lamps were selected during flight model selection in the laboratory), the algorithm is used to monitor and correct the differential aging of the lamps themselves.…”

Section: Correction Of the Responsivity Degradation During The Solar mentioning

confidence: 99%

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SOLAR/SOLSPEC mission on ISS: In-flight performance for SSI measurements in the UV

Bolsée

Pereira

Gillotay

et al. 2017

A&A

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Context. The SOLar SPECtrum (SOLSPEC) experiment is part of the Solar Monitoring Observatory (SOLAR) payload, and has been externally mounted on the Columbus module of the International Space Station (ISS) since 2008. SOLAR/SOLSPEC combines three absolutely calibrated double monochromators with concave gratings for measuring the solar spectral irradiance (SSI) from 166 nm to 3088 nm. This physical quantity is a key input for studies of climatology, planetary atmospheres, and solar physics. Aims. A general description of the instrument is given, including in-flight operations and performance of the ultraviolet (UV) channel from 175 nm to 340 nm. Methods. We developed a range of processing and correction methods, which are described in detail. For example, methods for correcting thermal behavior effects, instrument linearity, and especially the accuracy of the wavelength and absolute radiometric scales have been validated by modeling the standard uncertainties. Results. The deliverable is a quiet Sun UV reference solar spectrum as measured by SOLAR/SOLSPEC during the minimum of solar activity prior to cycle 24. Comparisons with other instruments measuring SSI are also presented.

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Section: Instrument Descriptionmentioning

confidence: 99%

Section: Wavelength Scale Of Solar/solspecmentioning

confidence: 99%

Section: Thermal Correctionsmentioning

confidence: 99%

Section: Absolute Radiometric Calibrationmentioning

confidence: 99%

Section: Correction Of the Responsivity Degradation During The Solar mentioning

confidence: 99%

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SOLAR/SOLSPEC mission on ISS: In-flight performance for SSI measurements in the UV

Bolsée

Pereira

Gillotay

et al. 2017

A&A

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Can Measurements of the Near‐Infrared Solar Spectral Irradiance be Reconciled? A New Ground‐Based Assessment Between 4,000 and 10,000 cm⁻¹

Elsey

Coleman

Gardiner

et al. 2017

Geophysical Research Letters

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The near‐infrared solar spectral irradiance (SSI) is of vital importance for understanding the Earth's radiation budget, and in Earth observation applications. Differences between previously published solar spectra (including the commonly used ATLAS3 spectrum) reach up to 10% at the low wavenumber end of the 4,000–10,000 cm−1 (2.5–1 μm) spectral region. The implications for the atmospheric sciences are significant, since this spectral region contains 25% of the incoming total solar irradiance. This work details an updated analysis of the CAVIAR SSI, featuring additional analysis techniques and an updated uncertainty budget using a Monte Carlo method. We report good consistency with ATLAS3 in the 7,000–10,000 cm−1 region where there is confidence in these results due to agreement with other spectra, but ~7% lower in the 4,000–7,000 cm−1 region, in general agreement with several other analyses.

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Focal Plane Arrays for Optical Payloads

Djazovski¹

2015

Optical Payloads for Space Missions

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Accurate Determination of the TOA Solar Spectral NIR Irradiance Using a Primary Standard Source and the Bouguer–Langley Technique

Cited by 26 publications

References 39 publications

SOLAR/SOLSPEC mission on ISS: In-flight performance for SSI measurements in the UV

SOLAR/SOLSPEC mission on ISS: In-flight performance for SSI measurements in the UV

Can Measurements of the Near‐Infrared Solar Spectral Irradiance be Reconciled? A New Ground‐Based Assessment Between 4,000 and 10,000 cm⁻¹

Focal Plane Arrays for Optical Payloads

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Accurate Determination of the TOA Solar Spectral NIR Irradiance Using a Primary Standard Source and the Bouguer–Langley Technique

Cited by 26 publications

References 39 publications

SOLAR/SOLSPEC mission on ISS: In-flight performance for SSI measurements in the UV

SOLAR/SOLSPEC mission on ISS: In-flight performance for SSI measurements in the UV

Can Measurements of the Near‐Infrared Solar Spectral Irradiance be Reconciled? A New Ground‐Based Assessment Between 4,000 and 10,000 cm−1

Focal Plane Arrays for Optical Payloads

Contact Info

Product

Resources

About

Can Measurements of the Near‐Infrared Solar Spectral Irradiance be Reconciled? A New Ground‐Based Assessment Between 4,000 and 10,000 cm⁻¹