Evaluation of Solar Spectra and Their Effects on Radiative Transfer and Climate Simulation

Sun, Zhian; Li, Jiangnan; Liu, Jingmiao

doi:10.5772/27590

Cited by 2 publications

(2 citation statements)

References 14 publications

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“…In a similar study but in a broader region (ultra-violet to near-IR), [8] have also arrived at the same conclusion as [7]. However, none of these studies is dedicated to the near-IR, which contains over 50% of available solar energy.…”

Section: Introductionmentioning

confidence: 49%

The effect of chosen extraterrestrial solar spectrum on clear-sky atmospheric absorption and heating rates in the near infrared

Menang¹,

Shine²

2013

AIP Conference Proceedings

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Abstract:The extraterrestrial solar spectrum (ESS) is an important component in near infrared (near-IR) radiative transfer calculations. However, the impact of a particular choice of the ESS in these regions has been given very little attention. A line-by-line (LBL) transfer model has been used to calculate the absorbed solar irradiance and solar heating rates in the near-IR from 2000-10000 cm -1 (1-5 µm) using different ESS. For overhead sun conditions in a mid-latitude summer atmosphere, the absorbed irradiances could differ by up to about 11 Wm −2 (8.2 %) while the tropospheric and stratospheric heating rates could differ by up to about 0.13 K day −1 (8.1 %) and 0.19 K day −1 (7.6 %). The spectral shape of the ESS also has a small but non-negligible impact on these factors in the near-IR.

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Section: Introductionmentioning

confidence: 49%

The effect of chosen extraterrestrial solar spectrum on clear-sky atmospheric absorption and heating rates in the near infrared

Menang¹,

Shine²

2013

AIP Conference Proceedings

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“…Zhong et al () showed that using three different SSI in LBL and broadband radiative transfer calculations under all‐sky results in significant differences in heating rates for a midlatitude summer (MLS) atmosphere in the ultraviolet and global average annual‐mean temperature. In a similar study by Sun et al () using a larger number of SSI (five), significant differences were also obtained in heating rates in the ultraviolet, downward solar irradiances (from ultraviolet to near IR), and changes in latitude‐height cross sections of zonal‐mean temperature. The only investigation dedicated to near IR wavelengths is that of Menang and Shine () in which they demonstrated that using different SSI in LBL radiative transfer calculations results in up to 8% differences in clear‐sky absorption and heating rates for a MLS atmosphere.…”

Section: Introductionmentioning

confidence: 61%

Assessment of the Impact of Solar Spectral Irradiance on Near‐Infrared Clear‐Sky Atmospheric Absorption and Heating Rates

Menang¹

2018

JGR Atmospheres

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In the near infrared (near IR), differences in both the absolute level and spectral resolution of available observation-based solar spectral irradiances (SSI) are very significant. In this paper, a very high-resolution line-by-line radiative transfer model has been used to investigate the effect of the differences in the absolute level of SSI on the clear-sky total absorbed solar irradiance and solar heating rates in the near IR from 4,000 to 10,000 cm À1 (2.5-1 μm), for a midlatitude summer atmosphere. Absorption calculated using observed SSI from the surface, aircraft, and satellite are between 2 and 8% lower than that for the widely used ATmospheric Laboratory for Applications and Science (ATLAS) 3 spectrum. Tropospheric and stratospheric heating rates produce by these spectra are also lower than that produced by the ATLAS 3 spectrum by about 3-9% and 4-11%, respectively. However, there is a closer agreement between near IR absorbed irradiances and heating rates computed using two most recent observed spectra. That notwithstanding, it is recommended that the uncertainty in the choice of the SSI in near IR radiative transfer modeling should be quantified. Plain Language SummaryThere have been disagreements in the measurement of the amount of solar energy arriving outside the Earth's atmosphere as infrared, a region with a significant quantity of solar energy. But very little attention has been paid to the effect of these differences in climate modeling. This work examines the impact that the differences in this infrared solar energy have on its absorption by the atmosphere and subsequent heating of the atmosphere by gases such as water vapor and carbon dioxide. Results show that the differences in this infrared solar energy lead to significant differences in absorbed solar energy and heating of the atmosphere. Compared with older measurements of the infrared solar energy, calculations using two recent measurements produce comparable absorption in the atmosphere as well as heating of the atmosphere. This can be interpreted as a good sign that disagreements in measurements of infrared solar energy are decreasing, but some caution should be taken when choosing a measured infrared solar energy for climate simulations. MENANG 6460Key Points:• This work investigates how differences in observed near-infrared solar spectral irradiances affect clear-sky absorption and heating rates • Compared to the widely used ATLAS 3 spectrum, differences of up to 8% in absorption and 11% in heating rates were obtained • Calculations using solar spectral irradiances from recent reanalyses of ground-based and satellite-based data are in closer agreement

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Evaluation of Solar Spectra and Their Effects on Radiative Transfer and Climate Simulation

Cited by 2 publications

References 14 publications

The effect of chosen extraterrestrial solar spectrum on clear-sky atmospheric absorption and heating rates in the near infrared

The effect of chosen extraterrestrial solar spectrum on clear-sky atmospheric absorption and heating rates in the near infrared

Assessment of the Impact of Solar Spectral Irradiance on Near‐Infrared Clear‐Sky Atmospheric Absorption and Heating Rates

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