Sentences with phrase «hemispheric values»

While atmospheric GEM concentrations reconstructed from Summit firn air are higher than mean hemispheric values, they reproduce GEM levels observed shipboard between 40 ° and 50 ° N (see Fig.

To avoid the better sampled northern hemisphere from dominating the temperature record, scientists take the average of the two hemispheric values.

Together, the hemispheric values provide an estimate of global average temperature.

Not exact matches

Furthermore, if we look at the SH non-smoothed annual datafile and accept that the years 1944 - 1945 were the beginning of a trend - shift for global temperatures, we see that in these years the southern hemispheric average temperature was about 14.02 C and 13.96 C, respectively (assuming a 14C value for the» 61 - ’90 SH average, I don't have any better value but it doesn't matter very much).

Their qualitative approach precluded any quantitative summary of the evidence at precise times, limiting the value of their review as a basis for comparison of the relative magnitude of mean hemispheric 20th - century warmth (Mann and Jones, 2003; Osborn and Briffa, 2006).