MERCATOR OCEAN JOURNA: 
SEPTEMBER 2021 
forecast model system (previously described). The present 
NEMO-PISCES 3.6 code includes a new formulation for 
permanent burial to the sediment). Nutrient inputs were 
also updated, using now the Global NEWS 2 (Mayorga et 
al., 2010) and additional nutrient at rivers (inputs from EEA 
data sources). The carbon cycle modelling was improved 
by including the anthropogenic forcing in the surface CO, 
pressure. Also, suplementary variables related to carbon 
cycle (such as spCO,, pH and DIC) are now provided. 
Additionally, the IBI BIO MY solution has been enhanced, 
with all variables showing a general improvement in open 
ocean, but with very strong impacts on the simulation 
accuracy of coastal/shelf nutrients and chlorophyl. For 
more details, please refer to McGovern et al. (2020). 
IB NRT: Cantinental shelt PO4 
Ta 
+ 
Karl 
© 
5° 
0.5 
0 
[1 *B 
- AZ 
A 
äC 
W 
75 
1.50 
: 
® 0 
a] 
26 
1.25 
7150 
15 
1.00 
a, 
ICH” 
vr 
iz 
1.75 
> 
1.51 
5 
1.75 
'o oO 1.00 
— 
© 075 
(50 
5 
Ob 
{7 
0.00 
0 
MO 
ICE. 
ar 
Ha 
2 
15 
20 
5 
LO 
IB MYı Chlorophyll RMSD 
7} = 
74 
— 2015 
— 2018 
—— 93320 
3 
1. 
bi 
wi 
„ye 
7004 
OO 
+12 
2016 
2070 
‚gure zZ: |mprovements on IBI BIO Products. (a) and (b) Continental shelf nutrients {(PO4) in NRT products (2018 and 2020 system releases) 
zompared to ICES observational data. (c) Clorophyll-a RMSD between MY products (2015, 2018 and 2020 system releases) and satellite ocean 
zolour product (Copernicus Marine Service products 009 090 and 009 091).