Sentences with phrase «atmospheric measurements often»

Carrying out atmospheric measurements often entails having to consider how representative measurements taken in a single location are, and whether local conditions, such as landforms, affect observations.

Not exact matches

The statement that only 55 % of human CO2 emissions have been removed by the biosphere / biosphere is something you'll have to prove, which is hard because as far as I'm aware human CO2 does not posses an isotopic signature that can be easily differentiated from natural sources — the arguments you often hear on Skeptical Science are measurements in changes of the C12 / C13 / C14 atmospheric mass, not individual CO2 molecules, which can be misleading.

Measurements of δ13C depletion have often been cited as anthropogenic «fingerprints,» proving human culpability for the rise in atmospheric CO2 over the last 200 years or so......