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Surface climate response associated with Southern Annular Mode changes
| PI: |
Andrea Carril |
| Institution: |
Instituto Nazionale di Geofisica e Vulcanologia |
| Additional Investigators: |
Claudio Menendez |
| Abstract: |
Simulations: Pre-industrial control, 20C3M, SRES A2, SRES A1B
Background: The Southern Annular Mode (SAM) is the dominant mode of climate variability in polar to middle-latitude regions. An assessment of the impact of SAM related variability over the regional response pre-impose a deep knowledge of this mode of circulation and its variability, particularly on the time-scale of decades to centuries. Recent results suggest that the response of the SAM to increasing CO2 displays a robust upward trend in transient greenhouse warming integrations. However, even though this basic agreement, questions remain about the timing and magnitude of the trends, and the spread among models and integrations. The relationship of southern South America and neighboring oceans climate with SAM wind forcing is potentially strong.
Objective: We propose to investigate the regional changes in the surface climatology that occur when the SAM index exceeds determined thresholds (corresponding to extreme cases of both negative and positive phases). The response to climate change will also be examined.
Model Data required:
Table A1a: pr, tas, mrso, snd, prsn, prc, uas, vas
Table A1c: zg
Table A4: fd, etr, gsl, hwdi, tn90, r10, cdd, r5d, sdii, r95t
Table O1a: hfogo
Table O1c: tos, sic, sit |
| Publications: |
- Carril A. F., C. G. Menéndez and A. Navarra, 2005: "Climate response associated with the Southern Annular Mode in the surroundings of Antarctic Peninsula: A multimodel ensemble analysis". Geophys. Res. Lett., 32, doi:10.1029/2005GL023581. Abstract. Edit.
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