update predictor variables

[fawda123]

Create and/or get the following:

• temperature anomaly data - divide temp records for all sites by mean
• combine ammonia, nitrite, nitrate into DIN
• create nutrient ratio variables - N:P, Si:N
• get approximate residency times at each site, JS is looking into it
• upwelling index https://www.pfeg.noaa.gov/products/PFEL/modeled/indices/upwelling/NA/data_download.html

[fawda123]

Residence times in ignore/HABMAP stations circulation patterns.xlsx, perhaps do categorically and assume SCRIPPS is short since open

[fawda123]

upwelling data added here 65bd267

two upwelling stations were used (10/11), the closest upwelling station was matched to each time series station

bight_habs/R/dat_proc.R

Line 106 in 65bd267

stat = st_nearest_feature(., locs)

From website, indices are in units of cubic meters per second along each 100 meters of coastline