id	keyword
hom-23	flow
hom-23	north
hom-23	summer
hom-23	year
hom-23	circulation
hom-23	high
hom-23	climate
hom-23	eastern
hom-23	air
hom-23	northern
hom-23	reconstruction
hom-23	data
hom-23	america
hom-23	canada