The upper graph and left axis show annual anomalies and the lower graph and the right axis show decadal average anomalies for the same datasets. The figure compares three analyses of observations.
The black line refers to data from HadCRUT3 from the UK Met Office Hadley Centre and University of East Anglia Climate Research Unit, baseline period 1850–1899 (Brohan et al., 2006).
The green line refers to data from GHCN-M version 3.1.0 from the US National Oceanic and Atmospheric Administration (NOAA) National Climatic Data Centre, baseline period 1880–1899 (Smith et al., 2008).
The blue line refers to data from GISSTemp from the National Aeronautics and Space Administration (NASA) Goddard Institute for Space Studies, baseline period 1880–1899
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1) Brohan, P., Kennedy, J., Harris, I., Tett, S., Jones, P., 2006, 'Uncertainty estimates in regional and global observed temperature changes: a new dataset from 1850', Journal Geophysical Research, 111(D12106).
2) Smith, T., Reynolds, R., Peterson, T. and Lawrimore, J., 2008, 'Improvements to NOAA's historical merged land-ocean surface temperature analysis (1880–2006)', Journal of Climate, 21, 2 283–2 293.
3) Hansen, J., Ruedy, R. and Sato, M., 2010, 'Global surface temperature change', Reviews of Geophysics, 48(RG4004), pp 1–29.
It is largely biodegradable, less polluting to aquatic habitats and just as effective a cleaning agent as less environmentally friendly options. Look for eco-friendly dishwashing detergents, such as those labelled with the European flower eco-label (see www.eco-label.com to find one in your country).
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