hey fc you ignorant troll read the last sentence...
of the quote below... do you understand...
co2 moves around... it just does not pop out next to the ice year.
are you really so stupid you do not understand the earths systems have variables.
you keep telling us you have a degree but you do not act like any scientist I know. no real scientist only spouts propaganda -- they have integrity and acknowledge both sides of the argument.
Where did you get your "science" degree anyway? al gore online college?
of the quote below... do you understand...
co2 moves around... it just does not pop out next to the ice year.
are you really so stupid you do not understand the earths systems have variables.
you keep telling us you have a degree but you do not act like any scientist I know. no real scientist only spouts propaganda -- they have integrity and acknowledge both sides of the argument.
Where did you get your "science" degree anyway? al gore online college?
http://wattsupwiththat.com/2010/12/26/co2-ice-cores-vs-plant-stomata/
Ice cores and GEOCARB provide continuous long-term records; while plant stomata records are discontinuous and limited to fossil stomata that can be accurately aged and calibrated to extant plant taxa. GEOCARB yields a very low frequency record, ice cores have better resolution and stomata can yield very high frequency data. Modern CO2 levels are unspectacular according to GEOCARB, unprecedented according to the ice cores and not anomalous according to plant stomata. So which method provides the most accurate reconstruction of past atmospheric CO2?
The problems with the ice core data are 1) the air-age vs. ice-age delta and 2) the effects of burial depth on gas concentrations.
The age of the layers of ice can be fairly easily and accurately determined. The age of the air trapped in the ice is not so easily or accurately determined. Currently the most common method for aging the air is through the use of âfirn densification modelsâ (FDM). Firn is more dense than snow; but less dense than ice. As the layers of snow and ice are buried, they are compressed into firn and then ice. The depth at which the pore space in the firn closes off and traps gas can vary greatly⦠So the delta between the age of the ice and the ago of the air can vary from as little as 30 years to more than 2,000 years.
The EPICA C core has a delta of over 2,000 years. The pores donât close off until a depth of 99 m, where the ice is 2,424 years old. According to the firn densification model, last yearâs air is trapped at that depth in ice that was deposited over 2,000 years ago.