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Collects .csv files from NOAA, and binds them together into a single data.frame. Data across years, with extent and area of ice.
.csv
sea_ice_tabular(...)
A data.frame with columns:
year (integer)
mo (integer)
data.type (character)
region (character)
extent (numeric)
area (numeric)
Curl options passed on to crul::verb-GET - beware that curl options are passed to each http request, for each of 24 requests.
An example file, for January, North pole: https://sidads.colorado.edu/DATASETS/NOAA/G02135/north/monthly/data/N_01_extent_v3.0.csv
https://sidads.colorado.edu/DATASETS/NOAA/G02135/north/monthly/data/N_01_extent_v3.0.csv
a value in any cell of -9999 indicates missing data
sea_ice()
if (FALSE) { df <- sea_ice_tabular() df }
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