Add MOM6 surface temperature page

Author: BBeltz1

chapters/surface_temp_mom6.Rmd

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+# Sea Surface Temperature - Ocean Model {#surface_temp_mom6}
+
+**Description**: The data presented here are seasonal sea surface temperature anomalies for the period 1993-2019 from the MOM6 hindcast ocean model for the Northwest Atlantic. Also shown here are 10-year forecasts of sea surface temperature anomalies (2023-2033) from the MOM6 decadal forecast ocean model for the Northwest Atlantic.
+
+**Found in**: State of the Ecosystem - Indicator Catalog (2025) 
+
+**Indicator category**: Synthesis of published information, Database pull with analysis
+
+**Contributor(s)**: Laura Gruenburg, Vimal Koul, Andrew Ross
+  
+**Data steward**: Laura Gruenburg <[email protected]>
+  
+**Point of contact**: Laura Gruenburg <[email protected]>
+  
+**Public availability statement**: Source data are publicly available.
+
+## Methods
+
+### Data Sources
+
+Data from the Modular Ocean Model Version 6 for the Northwest Atlantic (MOM6-NWA12, Ross et al., 2023) hindcast are available through the Climate Ecosystems Fisheries Initiative web portal (https://psl.noaa.gov/cefi_portal/).  Data from the decadal forecast version of the MOM6-NWA12 model described in Koul et al. (2024) are available from zenodo (https://zenodo.org/records/10412704). 
+
+### Data Analysis
+
+Hindcast sea surface temperature was downloaded at a daily temporal scale for the time period 1993-2019.  This data was averaged seasonally (Winter: January, February, March; Spring: April, May, June; Summer: July, August, September; Fall: October, November, December) and spatially within three EPUs - the Mid Atlantic Bight (MAB), the Gulf of Maine (GOM) and Georges Bank (GB).  A seasonal climatology was created for each EPU by averaging seasonal values over the base period 1993-2019.  Seasonal anomalies were created for each EPU by subtracting this seasonal climatology from the seasonal sea surface temperature time series.
+
+Decadal forecast data for annual sea surface temperature anomalies by EPU is presented as in Figure 3 of Koul et al. (2024).  In this instance the climatology period is 1993-2021.
+
+### Data Processing 
+
+
+**catalog link**
+<https://noaa-edab.github.io/catalog/surface_temp_mom6.html>