Summary - CURRENT ANALYSIS Uses sources from a variety of...

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Description of the Method of Analysis Defined in the late 1970’s for the comparison of 1-D global models Earlier method covers 20 º - 90 º latitudes (Rationale presumed) Southern Hemisphere were sufficient for temperature change Global cooling after 1940 was small and .4 º C rise between 1880’s and 1970’s. Analysis method documented in Hansen and Lebedeff for stations separated by 1200 km. They were able to create a data set and obtained quantitative estimates of the error and global model, which was shown to have a realistic spatial and temporal variability. This error is the only addressed one due to incomplete spatial coverage of measurements. Other sources of error include meteorological stations. Many other such techniques have been implemented. Largest agreement in warming is it’s spatial distribution which grows large at desolate locations and with a different global pattern. The general rule to follow which includes warming suggests N.H > S.H. H.L > L.L and larger over land than ocean.
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Unformatted text preview: CURRENT ANALYSIS Uses sources from a variety of places Graphs and tables are updated around the 10th of each month. Two step gathering i) Multiple records combine into one ii) Urban and peri-urban stations are adjusted so that long term trend matches the mean. Global temperature index is obtained by comparing meteorological measurements with the sea surface Analyses is limited to the period since 1880 because of poor spatial coverage. Plots of Regional Maps In order to see the effects of peak cooling during the 1940s we need to choose a particular range around that interval of time and investigate the behavior of the climate system during the particular interval. This is very similar to the principle of trichotomy in mathematical analysis, here we examine the boundaries outside the given equality and obtain relations on either side following which we conclude a particular result based on the how each side behaves. ....
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Summary - CURRENT ANALYSIS Uses sources from a variety of...

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