0-160 m nitrate climatology at station ALOHA

Monthly climatology and plus/minus one standard deviation for 0-160 m nitrate at station ALOHA (1988-2008). There is no statistically significant seasonal variability. The standard deviation is about half the mean so that there is a lot of variability from year to year.

Figure 1: Climatology of the 0-160 m vertical averaged nitrate from the HOT data.