Array of dimension year x longitude by latitude. Binary indicate of whether sea ice concentration of at least 15% was observed. Computed from NASA Boostrap sea ice concentration product (Comiso 2017).
data(obs_9_2005_2007)array
Comiso, J., 2017: Bootstrap sea ice concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS. version 3. Boulder, Colorado USA: NASA National Snow and Ice Data Center Distributed Active Archive Center. doi: https://doi.org/10.5067/7Q8HCCWS4I0R