Climate responses to SATIRE and SIM-based spectral solar forcing in a 3D atmosphere-ocean coupled GCM

Wen, Guoyong; Cahalan, Robert F.; Rind, David; Jonas, J.; Pilewskie, P.; Wu, Dong L.; Krivova, N. A.

doi:10.1051/swsc/2017009

Cited by 7 publications

(5 citation statements)

References 59 publications

(123 reference statements)

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“…In the climate system, the processes that take place are due to the combination of two main factors: the solar external factor and its own internal mechanism. The complexity of this combination is difficult to quantify in space-time by deterministic-explicit or stochasticdynamic models [1,2]. The relationship between the internal and external determinant factors in the evolution of the terrestrial climate system remains quite unknown, despite recent and increasingly sophisticated modeling.…”

Section: Introductionmentioning

confidence: 99%

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Quantification of the Direct Solar Impact on Some Components of the Hydro-Climatic System

Mares

Dobrică

et al. 2021

Entropy

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This study addresses the causal links between external factors and the main hydro-climatic variables by using a chain of methods to unravel the complexity of the direct sun–climate link. There is a gap in the literature on the description of a complete chain in addressing the structures of direct causal links of solar activity on terrestrial variables. This is why the present study uses the extensive facilities of the application of information theory in view of recent advances in different fields. Additionally, by other methods (e.g., neural networks) we first tested the existent non-linear links of solar–terrestrial influences on the hydro-climate system. The results related to the solar impact on terrestrial phenomena are promising, which is discriminant in the space-time domain. The implications prove robust for determining the causal measure of climate variables under direct solar impact, which makes it easier to consider solar activity in climate models by appropriate parametrizations. This study found that hydro-climatic variables are sensitive to solar impact only for certain frequencies (periods) and have a coherence with the Solar Flux only for some lags of the Solar Flux (in advance).

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Section: Introductionmentioning

confidence: 99%

“…Thus, the sensitivity of some climate hydro-climatic processes may not represent true responses when a physical parameter does not respond linearly with the solar forcing [2]. In turn, even hydro-climatic processes have nonlinear links between them [3].…”

Section: Introductionmentioning

confidence: 99%

Quantification of the Direct Solar Impact on Some Components of the Hydro-Climatic System

Mares

Dobrică

et al. 2021

Entropy

View full text Add to dashboard Cite

show abstract

“…In the climate system the processes that take place are due to the combination of two main factors the solar external factor and its own internal mechanism. The complexity of this combination is difficult to quantify space-time by deterministicexplicit or stochastic-dynamic models [1,2]. The relationship between the internal and external determinants factors in the evolution of the terrestrial climate system remains quite unknown, despite the recent and increasingly sophisticated modeling.…”

Section: Introductionmentioning

confidence: 99%

“…There are also cases when it is not possible to adequately capture climate responses to solar forcing even through robust models coupled ocean-atmosphere of general circulation. Thus the sensitivity of some climate hydroclimatic processes may not represent true responses when a physical parameter does not respond linearly with the solar forcing [2] . In turn even hydroclimatic processes between them have nonlinear links [3].…”

Section: Introductionmentioning

confidence: 99%

Quantification of the Direct Solar Impact on Some Components of the Hydroclimatic System

Mares¹,

Mares²,

Dobrica³

et al. 2021

Preprint

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This study addresses the causal links between external factors and the main hydro-climatic variables. There is a gap in the literature on the description of a complete chain in addressing the structures of direct causal links of solar activity on the terrestrial variables. This is why, the present study uses the extensive facilities of the application of information theory in view of recent advances in different fields. Also, by other methods (e.g. neural networks) first are tested the existence non-linear links of solar-terrestrial influences on hydro-climate system. The results are promising related to the solar impact on terrestrial phenomena which is discriminant in space-time domain. The implications prove robust for determining the causal measure of climate variables under direct solar impact which makes it easier to consider solar activity in climate models, by appropriate parametrizations. This study found that hydro-climatic variables are sensitive to solar impact only for certain frequencies (periods) and these have a coherence with the Solar-Flux only for some lags of the Solar-Flux (in advance).

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“…Chemistry-climate model simulations show that different input data sets might have significant influences on the responses and therefore implications of Earth's atmosphere (e.g. Ermolli et al, 2013;Wen et al, 2017). The time series of SIM is continued by an improved SIM instrument as part of NASA's Total and Spectral Solar Irradiance Sensor (TSIS-1, since late 2017) mounted at the International Space Station (ISS) (Pilewskie et al, 2018) and in a compact version on CubeSat as Compact Spectral Irradiance Monitor (CSIM) launched in December 2018 (Harber, 2019).…”

Section: Introductionmentioning

confidence: 99%

Optimised degradation correction for SCIAMACHY satellite solar measurements from 330 to 1600 nm by using its internal white light source

Hilbig¹,

Bramstedt²,

Weber³

et al. 2019

Preprint

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Abstract. SCIAMACHY (SCanning Imaging Absorption spectroMeter for Atmospheric CHartographY) on-board the European Environmental Satellite (Envisat) provided spectrally resolved measurements in the wavelength range from 0.24 to 2.4 μm by looking into the Earth’s atmosphere using different viewing geometries (limb, nadir, solar and lunar occultation). These observations were used to derive a multitude of parameters, in particular atmospheric trace gas amounts. In addition to radiance measurements solar spectral irradiances (SSI) were measured on a daily basis. The instrument was operating for nearly a decade, from August 2002 to April 2012. Due to the harsh space environment, it suffered from continuous optical degradation. As part of recent radiometric calibration activities an optical (physical) model was introduced that describes the behaviour of the scanner unit of SCIAMACHY with time (Krijger et al., 2014). This model approach accounts for optical degradation by assuming contamination layers on optical surfaces in the scanner unit. The variation of layer thicknesses of the various optical components is determined from the combination of solar measurements from different monitoring light paths available for SCIAMACHY. In this paper, we present an optimisation of this degradation correction approach, which in particular improves the solar spectral data. An essential part of the modification is the use of measurements from SCIAMACHY’s internal white light source (WLS) in combination with direct solar measurements. The WLS, as an independent light source, gives, therefore, an opportunity to better separate instrument variations and natural solar variability. However, the WLS emission depends on its burning time and is changing with time as well. To use these measurements in the optimised degradation correction, the change of the WLS emission in space needs to be characterised first. The changes of the WLS with accumulated burning time are in good agreement with detailed laboratory lamp studies by Sperling et al. (1996). Although the optimised degradation corrected SCIAMACHY SSI show still some instrumental issues when compared to SSI measurements from other instruments and model reconstructions, our study demonstrates the potential for the use of an internal WLS for degradation monitoring.

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Climate responses to SATIRE and SIM-based spectral solar forcing in a 3D atmosphere-ocean coupled GCM

Cited by 7 publications

References 59 publications

Quantification of the Direct Solar Impact on Some Components of the Hydro-Climatic System

Quantification of the Direct Solar Impact on Some Components of the Hydro-Climatic System

Quantification of the Direct Solar Impact on Some Components of the Hydroclimatic System

Optimised degradation correction for SCIAMACHY satellite solar measurements from 330 to 1600 nm by using its internal white light source

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