I am confused by what appear to be significant discrepancies between various data products such as the DMI sea ice volume and Piomas as well as similar reports on ice thickness.
For example, DMI reported just over 20k km^3 around the third week in February, but Piomas looks like just over 17k, which is in line with what Piomas reported at the end of January.
Am I reading something incorrectly? I realize that different methodologies produce different results, but all models are, or should be, compared against actual observations, such as submarine measurements and surface field trips.
So, like a man with two watches who doesn't know the correct time, which one is more accurate?
I guess we will find out when we have our first blue ocean event.
edit: km^3 not km^2