NSIDC vs. NANSEN vs. AMSR-E

Guest post by Steven Goddard In my May 1st piece, Dr. Walt Meier at NSIDC hypothesized that differences in algorithm between NSIDC and NANSEN (NORSEX) were causing the gap between the NSIDC interpretation of normal and the NANSEN interpretation of normal, as seen below.  They use different baseline periods which introduces some difference – but…