Response to Anomymous Referee 1

Abstract

General comments: This manuscript deals with temporal variations of anthropogenic CO2 in bottom waters in the Southern Ocean. The Southern Ocean is said to take up 40% of anthropogenic CO2 absorbed by the ocean. Thus, investigations of temporal variability of anthropogenic CO2 are very important to evaluate ocean's capacity of absorbing atmospheric CO2, information of which is indispensable for the projection of global warming. In terms of oceanic observation, the Southern Ocean is one of the regions, where the number of measurements, especially for chemical and biological properties, is scare. In this point also, it is worth of being published in the journal. The C1