eCite Digital Repository
Internal climate memory in observations and models
Citation
Monselesan, DP and O'Kane, TJ and Risbey, JS and Church, J, Internal climate memory in observations and models, Geophysical Research Letters, 42, (4) pp. 1232-1242. ISSN 0094-8276 (2015) [Refereed Article]
![]() | PDF 2Mb |
Copyright Statement
Copyright 2015 American Geophysical Union
Abstract
Attribution of cause of climate change is hindered by our ability to separate internal low-frequency variability from the forced response in the climate system. We characterize the spatiotemporal characteristics of internal variability by comparing ensemble averages of in-band fractional variances in Coupled Model Intercomparison Project Phase 5 (CMIP5) preindustrial control simulations to estimates from observations and reanalyses. For sea surface temperature and sea level height anomalies both models and observations show that variability on time scales less than 5 years is predominantly in the tropics and has the spatial signature of El Niño–Southern Oscillation. On progressively longer time scales the variance moves to the extratropics and from middle to higher latitudes while displaying spatially coherent features. The CMIP5 models show good agreement in the spatial and temporal apportioning of in-band variance when the variances are normalized.
Item Details
Item Type: | Refereed Article |
---|---|
Keywords: | climate, climate memory, observations, models, climate change, variability, climate modelling, el nino |
Research Division: | Earth Sciences |
Research Group: | Climate change science |
Research Field: | Climate change processes |
Objective Division: | Environmental Policy, Climate Change and Natural Hazards |
Objective Group: | Understanding climate change |
Objective Field: | Climate change models |
UTAS Author: | O'Kane, TJ (Dr Terry O'Kane) |
UTAS Author: | Risbey, JS (Dr James Risbey) |
UTAS Author: | Church, J (Dr John Church) |
ID Code: | 118515 |
Year Published: | 2015 |
Web of Science® Times Cited: | 25 |
Deposited By: | Directorate |
Deposited On: | 2017-07-13 |
Last Modified: | 2017-08-09 |
Downloads: | 153 View Download Statistics |
Repository Staff Only: item control page