Long-term Variation of Upper Stratospheric Circulation in the Northern Hemisphere in December

Kodera, Kunihiko; Yamazaki, Koji

doi:10.2151/jmsj1965.68.1_101

Cited by 49 publications

(25 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As seen in Figure S21 upper stratosphere was first reported based on rocketsonde data by Kodera and Yamazaki (1990). Later investigations of stratospheric data compiled by the former U.S. National Meteorological Center found evidence for a similar dynamical response in the southern winter (Hood et al 1993).…”

Section: Accepted Articlementioning

confidence: 66%

Solar signals in CMIP‐5 simulations: the ozone response

Hood

Misios

Mitchell

et al. 2015

Quart J Royal Meteoro Soc

110

View full text Add to dashboard Cite

A multiple linear regression statistical method is applied to model data taken from the Coupled Model Intercomparison Project, phase 5 (CMIP-5) to estimate the 11-yr solar cycle responses of stratospheric ozone, temperature, and zonal wind during the 1979-2005 period. The analysis is limited to the six CMIP-5 models that resolve the stratosphere (high-top models) and that include interactive ozone chemistry. All simulations assumed a conservative 11-yr solar spectral irradiance (SSI) variation based on the NRL model. These model responses are then compared to corresponding observational estimates derived from two independent satellite ozone profile data sets and from ERA Interim Reanalysis meteorological data. The models exhibit a range of 11-yr responses with three models (CESM1-WACCM, MIROC-ESM-CHEM, and MRI-ESM1) yielding substantial solar-induced ozone changes in the upper stratosphere that compare favorably with available observations. The remaining three models do not, apparently because of differences in the details of their radiation and photolysis rate codes.During winter in both hemispheres, the three models with stronger upper stratospheric ozone responses produce relatively strong latitudinal gradients of ozone and temperature in the upper stratosphere that are associated with accelerations of the polar night jet under solar maximum conditions. This behavior is similar to that found in the satellite ozone and ERA Interim data except that the latitudinal gradients tend to occur at somewhat higher latitudes in the models. The sharp ozone gradients are dynamical in origin and assist in radiatively enhancing the temperature gradients, leading to a stronger zonal wind response. These results suggest that simulation of a realistic solar-induced variation of upper stratospheric ozone, temperature and zonal wind in winter is possible for at least some coupled climate models even if a conservative SSI variation is adopted.

show abstract

Section: Accepted Articlementioning

confidence: 66%

Solar signals in CMIP‐5 simulations: the ozone response

Hood

Misios

Mitchell

et al. 2015

Quart J Royal Meteoro Soc

110

View full text Add to dashboard Cite

show abstract

“…According to present models, the wind increases from solar minimum to maximum are relatively small (<< 5 m/s). Observationally, there is evidence for a zonal wind variation from solar minimum to maximum near the stratopause in December at northern midlatitudes and in June/July at southern midlatitudes [Kodera and Yamazaki, 1990;Hood et al, 1993b]. However, the observed stratopause wind variations are much larger in amplitude than expected theoretically (e.g., 23…”

mentioning

confidence: 91%

The solar cycle variation of total ozone: Dynamical forcing in the lower stratosphere

Hood¹

1997

J. Geophys. Res.

131

122

View full text Add to dashboard Cite

“…Kodera and Yamazaki (1990) and Hood et al (1993) have reported signi®cant zonal wind variations in the Northern Hemisphere winter through the solar cycle. Labitzke and van Loon (1988 used over 30 years of daily observations to obtain a correlation between solar variability and the stratospheric 30 mb geopotential height ®eld.…”

Section: Introductionmentioning

confidence: 99%

“…Haigh (1994Haigh ( , 1996 demonstrated that consistent and statistically signi®cant changes to the Earth's middle atmosphere could be produced, but with amplitudes that were considerably smaller than those that have been reported. Kodera et al (1990) and Balachandran and Rind (1995) were able to achieve the desired amplitude response, but only by assuming unrealistically large ozone and ultraviolet heating variations respectively.…”

Section: Introductionmentioning

confidence: 99%

Solar cycle changes to planetary wave propagation and their influence on the middle atmosphere circulation

Arnold

Robinson

1997

Ann Geophysicae

View full text Add to dashboard Cite

Abstract. Recent observations suggest that there may be a causal relationship between solar activity and the strength of the winter Northern Hemisphere circulation in the stratosphere. A three-dimensional model of the atmosphere between 10±140 km was developed to assess the in¯uence of solar minimum and solar maximum conditions on the propagation of planetary waves and the subsequent changes to the circulation of the stratosphere. Ultraviolet heating in the middle atmosphere was kept constant in order to emphasise the importance of non-linear dynamical coupling. A realistic thermosphere was achieved by relaxing the upper layers to the MSIS-90 empirical temperature model. In the summer hemisphere, strong radiative damping prevents signi®-cant dynamical coupling from taking place. Within the dynamically controlled winter hemisphere, small perturbations are reinforced over long periods of time, resulting in systematic changes to the stratospheric circulation. The winter vortex was signi®cantly weakened during solar maximum and western phase of the quasi-biennial oscillation, in accordance with reported 30 mb geopotential height and total ozone measurements.

show abstract

Long-term Variation of Upper Stratospheric Circulation in the Northern Hemisphere in December

Cited by 49 publications

References 17 publications

Solar signals in CMIP‐5 simulations: the ozone response

Solar signals in CMIP‐5 simulations: the ozone response

The solar cycle variation of total ozone: Dynamical forcing in the lower stratosphere

Solar cycle changes to planetary wave propagation and their influence on the middle atmosphere circulation

Contact Info

Product

Resources

About