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WebsterCR_Science_2003 †

Webster, C.R. and A.J.Heymsfield, Water isotope ratios D/H, 18O/16O, 17O/16O in and out of clouds map degydration pathways, Science, 302, 1742-1745, 2003.

• Category: Upperair Isotopes
• Tool(s): Observation
• Summary: CRYSTAL-FACE対流圏上部・圏界面・成層圏下部の水安定同位体比観測論文。
• Read Date: 2006-08-14

Messages †

• 何度も読んだが、再読。
• 対流性の雲を横切るとき、同位体比は跳ね上がる。
  • 対流圏起源の氷(deltaD=-130‰)が多く(80%以上)含まれることが原因。
  • Cirrusを横切っても、Mixing Ratioは上昇するが、同位体比は変わらない。
• 氷の同位体比を用いて、起源分離が可能。氷粒の全部蒸発(deltaD=-130‰、22%)と水蒸気のaloft(deltaD=-800‰、78%)。
  • 後者の根拠が分からない。Rayleigh？？

Details †

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Memo †