Accurate Determination of the TOA Solar Spectral NIR Irradiance Using a Primary Standard Source and the Bouguer-Langley Technique
| dc.contributor.author | Bolsée, D. | |
| dc.contributor.author | Pereira, N. | |
| dc.contributor.author | Decuyper, W. | |
| dc.contributor.author | Gillotay, D. | |
| dc.contributor.author | Yu, H. | |
| dc.contributor.author | Sperfeld, P. | |
| dc.contributor.author | Pape, S. | |
| dc.contributor.author | Cuevas, E. | |
| dc.contributor.author | Redondas, A. | |
| dc.contributor.author | Hernandez, Y. | |
| dc.contributor.author | Weber, M. | |
| dc.date | 2014 | |
| dc.date.accessioned | 2016-03-25T09:42:10Z | |
| dc.date.available | 2016-03-25T09:42:10Z | |
| dc.identifier.uri | https://orfeo.belnet.be/handle/internal/2843 | |
| dc.description | We describe an instrument dedicated to measuring the top of atmosphere (TOA) solar spectral irradiance (SSI) in the near-infrared (NIR) between 600 nm and 2300 nm at a resolution of 10 nm. Ground-based measurements are performed through atmospheric NIR windows and the TOA SSI values are extrapolated using the Bouguer–Langley technique. The interest in this spectral range arises because it plays a main role in the Earth’s radiative budget and also because it is employed to validate models used in solar physics. Moreover, some differences were observed between recent ground-based and space-based instruments that take measurements in the NIR and the reference SOLSPEC(ATLAS3) spectrum. In the 1.6 μm region, the deviations vary from 6 % to 10 %. Our measuring system named IRSPERAD has been designed by Bentham (UK) and has been radiometrically characterized and absolutely calibrated against a blackbody at the Belgian Institute for Space Aeronomy and at the Physikalisch-Technische Bundesanstalt (Germany), respectively. A four-month measurement campaign was carried out at the Izaña Atmospheric Observatory (Canary Islands, 2367 m a.s.l.). A set of top-quality solar measurements was processed to obtain the TOA SSI in the NIR windows. We obtained an average standard uncertainty of 1 % for 0.8 μm<λ<2.3 μm. At 1.6 μm, corresponding to the minimum opacity of the solar photosphere, we obtained an irradiance of 234.31±1.29 mWm−2 nm−1. Between 1.6 μm and 2.3 μm, our measurements show a disagreement varying from 6 % to 8 % relative to ATLAS3, which is not explained by the declared standard uncertainties of the two experiments. | |
| dc.language | eng | |
| dc.title | Accurate Determination of the TOA Solar Spectral NIR Irradiance Using a Primary Standard Source and the Bouguer-Langley Technique | |
| dc.type | Article | |
| dc.subject.frascati | Earth and related Environmental sciences | |
| dc.audience | Scientific | |
| dc.subject.free | Ground-based | |
| dc.subject.free | Near-infrared | |
| dc.subject.free | Solar spectral irradiance | |
| dc.subject.free | Top of atmosphere | |
| dc.source.title | Solar Physics | |
| dc.source.volume | 289 | |
| dc.source.issue | 7 | |
| dc.source.page | 2433-2457 | |
| Orfeo.peerreviewed | Yes | |
| dc.identifier.doi | 10.1007/s11207-014-0474-1 | |
| dc.identifier.scopus | 2-s2.0-84897571476 |
