0 |
Surface Mixed Layer (ML) |
0 m to base of surface mixed layer (MLD,
defined as density >= σθ surface+ 0.125 kg
m-3
|
0 m to base of surface mixed layer (MLD, defined
as density >= σθ surface+ 0.125 kg
m-3
|
0 m to base of surface mixed layer (MLD, defined
as density >= σθ surface+ 0.125 kg
m-3
|
1 |
Upper Stratified Euphotic Zone |
MLD to top of DCM layer |
MLD to
top of DCM layer |
MLD to top of DCM layer |
2 |
Deep Chlorophyll Maximum (DCM) |
Portion of Chl-a profile
>= 0.35 of Chl-a max |
Portion of Chl-a profile
>= 0.35 of Chl-a max |
Portion of Chl-a profile
>= 0.35 of Chl-a max |
3 |
Winter Mode Water layer |
Base of DCM to density of local winter MLD
(σθ =26.32) |
Base of DCM to density of local winter MLD
(σθ =26.32) |
Base of DCM to density of local winter MLD
(σθ =26.32) |
4 |
Ventilated Thermocline Layer 4 |
Base of WMW to σθ
26.50 |
Base of WMW to σθ 26.50 |
Base of WMW to
σθ 26.50 |
5 |
5 |
σθ 26.50 to 26.70 |
σθ 26.50 to
26.70 |
σθ 26.50 to 26.70 |
6 |
6 |
σθ 26.70 to 26.90 |
σθ 26.70 to
26.90 |
σθ 26.70 to 26.90 |
7 |
7 |
σθ 26.90 to 27.10 |
σθ 26.90 to
27.10 |
σθ 26.90 to 27.10 |
8 |
8 (Deep O2 minimum) |
σθ 27.10 to
27.30 |
σθ 27.10 to 27.30 |
σθ 27.10 to
27.30 |
9 |
9 |
σθ 27.30 to 27.50 |
σθ 27.30 to
27.50 |
σθ 27.30 to 27.50 |
10 |
10 |
σθ 27.50 to 27.90 |
σθ 27.50
to 27.90 |
σθ 27.50 to 27.90 |
Season
|
Definition
|
Year 1 (ends)
|
Year 2 (ends)
|
Year 3 (ends)
|
Mixed
|
MLD > DCM layer
|
01-Apr-2016
|
10-Apr-2017
|
05-Apr-2018
|
Spring
|
MLD abruptly shoals to ~100m
|
31-May-2016
|
26-Apr-2017
|
26-Apr-2018
|
Stratified
|
MLD shallower than top of DCM
|
01-Oct-2016
|
16-Oct-2017
|
01-Oct-2018
|
Fall
|
First entrainment of DCM into ML
|
01-Dec-2016
|
01-Jan-2018
|
01-Jan-2019
|