The Influence of Solar Variability on the Atmosphere

and Ocean Dynamics

Speaker： Pei-Yu Chueh Adviser： Yu-Heng Tseng

Date： 2010/09/09

Introduction

•Solar variability•Solar signals•The influence of solar forcing / the response of solar forcing

Observation•Atmosphere•Ocean

Model

•The coupled air-sea response mechanism to solar forcing. [Meehl et al., 2003; van Loon et al., 2007]

•The variations in stratospheric ozone in response to solar variability. [Haigh, 1996; Shindell et al., 1999; White, 2006]

Mechanism

Observation-Solar variability

• The variation of 1.4W/m2 observed between the 11-year cycle minimum in 1986 and maximum in 1991 could be deduced potentially to cause a mean increase in global average surface temperature of ca. 0.12 K .[Haigh, 2002]

Observation-Solar signals

[van Loon et al., 2000]

bathythermograph

[White et al., 1997]

Atmosphere Ocean

Mechanism

1. The coupled air-sea response mechanism to solar forcing. – Increased solar– Increased input in cloud free

areas– More vapor (precipitation)– More evaporation

(temperature)– Stronger trades

[Meehl et al., 2003; Van Loon et al., 2007]

Mechanism

2. The variations in stratospheric ozone in response to solar variability. – Solar irradiance – UV – O3 – Stratosphere– Troposphere warming– Heating ocean

[Haigh, 1996; Shindell et al., 1999; White, 2006]

Thank you!

The influence of solar forcing