  We consider determinations of the strange sea in the nucleon based on the QCD
analyses of data collected at the LHC with focus on the recent high-statistics
ATLAS measurement of the $W^\pm$- and $Z$-boson production. We study the effect
of different functional forms for parameterization of the parton distribution
functions and the combination of various data sets in the analysis. We compare
to earlier strange sea determinations and discuss ways to improve them in the
future.
