This good fit encourages us to seek dust deposition − temperature relationships by applying Eq. (pnas.org)
For the NH, we chose a high - resolution Greenland record (32) derived from the North Greenland Ice Core Project (NGRIP) ice core data (75.0 ° N, 42.3 ° W) back to 122.4 ky B.P. and extended it farther back to 340 ky B.P., mainly using Antarctic methane observations and an Antarctic methane − Greenland temperature relationship for the period 122.4 ky B.P. to 0 ky B.P. (ref. (pnas.org)
To illustrate this difference in the CO2 / temperature relationship before and after MIS 16, we calculate mean values for four different time intervals (799 — 650, 650 — 450, 450 — 270 and 270 — 50 kyr bp). (nature.com)