Hi
Please, answes all parts if possible thanks
question 5 a) The writer and campaigner George Monbiot wrote the following (in The Guardian Weekly, 10 February 2000): 'Every time someone in the West switches on a kettle, he or she is helping to flood Bangladesh'. What is the link between switching on a kettle and sea level rise? Write down the various steps in the chain of cause and effects as a set of bullet points. [6 Marks] b) With reference to Figure 4 : (i) What proportion (as a percentage) of the Earth's planetary albedo is due to solar radiation reflected by the surface? Which regions of the world are likely to be mainly responsible for this contribution? [4 Marks] (ii) Calculate the difference between the rate of energy gain and the rate of loss for: (i) the Earth's surface; (ii) the atmosphere; and (iii) the whole Earthatmosphere system (i.e. at the top of the atmosphere). What do you conclude about the Earth's global mean surface temperature (GMST)? [4 Marks] (iii) What proportion (as a percentage) of the longwave radiation emitted by the surface is absorbed by the atmosphere? [2 Marks] (iv) Translate the 114 units of longwave radiation emitted by the surface into a rate of energy transfer (in Wm2 ). Explain why your answer is consistent with the fact that the Earth's GMST (which is 236Wm2 ) is higher than its effective radiating temperature (19C). [4 Marks] (v) What three factors could disturb the radiation balance at the top of the atmosphere? [2 Marks] c) One suggested strategy for reducing anthropogenic emissions of methane is to capture the gas generated in landfill sites, and pipe this away for use as a fuel (for local domestic needs, say). But burning methane produces CO2. Why might this still be a sensible option if the overall aim is to reduce the total greenhouse forcing of climate in future? [3 Marks] [Total 25 marks] question 5 a) The writer and campaigner George Monbiot wrote the following (in The Guardian Weekly, 10 February 2000): 'Every time someone in the West switches on a kettle, he or she is helping to flood Bangladesh'. What is the link between switching on a kettle and sea level rise? Write down the various steps in the chain of cause and effects as a set of bullet points. [6 Marks] b) With reference to Figure 4 : (i) What proportion (as a percentage) of the Earth's planetary albedo is due to solar radiation reflected by the surface? Which regions of the world are likely to be mainly responsible for this contribution? [4 Marks] (ii) Calculate the difference between the rate of energy gain and the rate of loss for: (i) the Earth's surface; (ii) the atmosphere; and (iii) the whole Earthatmosphere system (i.e. at the top of the atmosphere). What do you conclude about the Earth's global mean surface temperature (GMST)? [4 Marks] (iii) What proportion (as a percentage) of the longwave radiation emitted by the surface is absorbed by the atmosphere? [2 Marks] (iv) Translate the 114 units of longwave radiation emitted by the surface into a rate of energy transfer (in Wm2 ). Explain why your answer is consistent with the fact that the Earth's GMST (which is 236Wm2 ) is higher than its effective radiating temperature (19C). [4 Marks] (v) What three factors could disturb the radiation balance at the top of the atmosphere? [2 Marks] c) One suggested strategy for reducing anthropogenic emissions of methane is to capture the gas generated in landfill sites, and pipe this away for use as a fuel (for local domestic needs, say). But burning methane produces CO2. Why might this still be a sensible option if the overall aim is to reduce the total greenhouse forcing of climate in future? [3 Marks] [Total 25 marks]