On the impact of solar spectral irradiance on the yield of different PV technologies

2015 ◽  
Vol 132 ◽  
pp. 431-442 ◽  
Author(s):  
Daniela Dirnberger ◽  
Gina Blackburn ◽  
Björn Müller ◽  
Christian Reise
Keyword(s):  
Spectral Irradiance ◽  
Solar Spectral Irradiance ◽  
The Impact

The impact of solar spectral irradiance variability on middle atmospheric ozone

2011 ◽  
Vol 38 (13) ◽  
pp. n/a-n/a ◽  
Author(s):  
Aimee W. Merkel ◽  
Jerald W. Harder ◽  
Daniel R. Marsh ◽  
Anne K. Smith ◽  
Juan M. Fontenla ◽  
...  
Keyword(s):  
Spectral Irradiance ◽  
Atmospheric Ozone ◽  
Solar Spectral Irradiance ◽  
The Impact

scholarly journals A comparison of measured and simulated solar network contrast

2009 ◽  
Vol 5 (S264) ◽  
pp. 63-65
Author(s):  
N. Afram ◽  
Y. C. Unruh ◽  
S. K. Solanki ◽  
M. Schüssler ◽  
S. K. Mathew
Keyword(s):  
Scattered Light ◽  
Spectral Irradiance ◽  
Small Scale ◽  
Space Instruments ◽  
Solar Spectral Irradiance ◽  
Magnetic Elements ◽  
Long Term Trends ◽  
Earth’S Climate ◽  
The Impact

AbstractLong-term trends in the solar spectral irradiance are important to determine the impact on Earth's climate. These long-term changes are thought to be caused mainly by changes in the surface area covered by small-scale magnetic elements. The direct measurement of the contrast to determine the impact of these small-scale magnetic elements is, however, limited to a few wavelengths, and is, even for space instruments, affected by scattered light and instrument defocus. In this work we calculate emergent intensities from 3-D simulations of solar magneto-convection and validate the outcome by comparing with observations from Hinode/SOT. In this manner we aim to construct the contrast at wavelengths ranging from the NUV to the FIR.

scholarly journals On the 1/f noise in the UV solar spectral irradiance

2013 ◽  
Vol 114 (3-4) ◽  
pp. 725-727 ◽  
Author(s):  
Costas A. Varotsos ◽  
Irina Melnikova ◽  
Maria N. Efstathiou ◽  
Chris Tzanis
Keyword(s):  
Spectral Irradiance ◽  
Solar Spectral Irradiance

scholarly journals Sensitivity of the tropical stratospheric ozone response to the solar rotational cycle in observations and chemistry-climate model simulations

2017 ◽  
Author(s):  
Rémi Thiéblemont ◽  
Marion Marchand ◽  
Slimane Bekki ◽  
Sébastien Bossay ◽  
Franck Lefèvre ◽  
...  
Keyword(s):  
Solar Cycle ◽  
Climate Model ◽  
Time Window ◽  
Stratospheric Ozone ◽  
Spectral Irradiance ◽  
Naval Research ◽  
Solar Spectral Irradiance ◽  
Model Free ◽  
Ozone Sensitivity ◽  
Ensemble Mean

Abstract. The tropical stratospheric ozone response to solar UV variations associated with the rotational cycle (~ 27 days) is analysed using MLS satellite observations and numerical simulations from the LMDz-Reprobus chemistry-climate model. The model is used in two configurations, as a chemistry-transport model (CTM) where dynamics are nudged toward ERA-Interim reanalysis and as a chemistry-climate model (free-running) (CCM). An ensemble of five 17 year simulations (1991–2007) is performed with the CCM. All simulations are forced by reconstructed time-varying solar spectral irradiance from the Naval Research Laboratory Solar Spectral Irradiance model. We first examine the ozone response to the solar rotational cycle during two 3 year periods which correspond to the declining phases of solar cycle 22 (10/1991–09/1994) and solar cycle 23 (09/200408/2007) when the satellite ozone observations of the two Microwave Limb Sounders (MLS-UARS and MLS-Aura) are available. In the observations, during the first period, ozone and UV flux are found to be correlated between about 10 and 1 hPa with a maximum of 0.29 at ~ 5 hPa; the ozone sensitivity (% change in ozone for 1 % change in UV) peaks at ~ 0.4. Correlation during the second period is weaker and has a peak ozone sensitivity of only 0.2, possibly due to the fact that the solar forcing is weaker during that period. The CTM simulation reproduces most of these observed features, including the differences between the two periods. The CCM ensemble mean results comparatively show much smaller differences between the two periods, suggesting that the amplitude of the rotational ozone signal estimated from MLS observations or the CTM simulation is strongly influenced by other (non-solar) sources of variability, notably dynamics. The analysis of the ensemble of CCM simulations shows that the estimation of the ensemble mean ozone sensitivity does not vary significantly neither with the amplitude of the solar rotational fluctuations, nor with the size of the time window used for the ozone sensitivity retrieval. In contrast, the uncertainty of the ozone sensitivity estimate significantly increases during periods of decreasing amplitude of solar rotational fluctuations (also coinciding with minimum phases of the solar cycle), and for decreasing size of the time window analysis. We found that a minimum of 3 year and 10 year time window is needed for the 1σ uncertainty to drop below 50 % and 20 %, respectively. These uncertainty sources may explain some of the discrepancies found in previous estimates of the ozone response to the solar rotational cycle.

Sign in / Sign up

Export Citation Format

Share Document