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Record #123691:
Water vapor feedback and the ice age snowline record / De-zheng Sun, Richard S. Lindzen.
Title: | Water vapor feedback and the ice age snowline record / De-zheng Sun, Richard S. Lindzen. |
Author(s): | Sun, De-zheng. Lindzen, Richard S. |
Date: | 1993. |
In: | Annales Geophysicae. (1993.), Vol. 11(2-3) (1993) |
Abstract: | Uses radiative-convective model to investigate changes of water vapour above convective boundary layer that can be consistent with vertical structure of tropical tropospheric temperature indicated by mountain snowline record, i.e. steeper lapse rate in low atmosphere (or equivalent reduction in static stability) requiring concomitant reduction in radiative cooling rate. Profiles observed in CLIMAP have much more convective available potential energy than present profiles, which can lead to enhanced production of hydrometeors in middle and upper troposphere whose re-evaporation can moisturize free troposphere. Show that moisture change leads to strong negative feedback which reduces response to doubling of CO₂. Discusses apparent contradictions between present results and existing studies suggesting positive water-vapour feedback. |
Notes: | Annales Geophysicae. Vol. 11(2-3) :204-215 (1993). |
Keywords: | 551.58 -- Climatology. 551.583.3 -- Climatic changes, Quaternary. 519.673 -- Modelling. E9 -- Glaciology: meteorology and climatology. |
SPRI record no.: | 123691 |
LDR 01638naa#a2200000#a#4500 001 SPRI-123691 005 20240328141316.0 007 ta 008 240328s1993####xx#a##|##|###|0||#0|eng#d 035 ## ‡aSPRI-123691 040 ## ‡aUkCU-P‡beng‡eaacr 100 1# ‡aSun, De-zheng. 245 10 ‡aWater vapor feedback and the ice age snowline record /‡cDe-zheng Sun, Richard S. Lindzen. 260 ## ‡a[S.l.] :‡b[s.n.],‡c1993. 300 ## ‡ap. 204-215 :‡bdiags., tables. 500 ## ‡aAnnales Geophysicae. Vol. 11(2-3) :204-215 (1993). 520 3# ‡aUses radiative-convective model to investigate changes of water vapour above convective boundary layer that can be consistent with vertical structure of tropical tropospheric temperature indicated by mountain snowline record, i.e. steeper lapse rate in low atmosphere (or equivalent reduction in static stability) requiring concomitant reduction in radiative cooling rate. Profiles observed in CLIMAP have much more convective available potential energy than present profiles, which can lead to enhanced production of hydrometeors in middle and upper troposphere whose re-evaporation can moisturize free troposphere. Show that moisture change leads to strong negative feedback which reduces response to doubling of CO₂. Discusses apparent contradictions between present results and existing studies suggesting positive water-vapour feedback. 650 07 ‡a551.58 -- Climatology.‡2udc 650 07 ‡a551.583.3 -- Climatic changes, Quaternary.‡2udc 650 07 ‡a519.673 -- Modelling.‡2udc 650 07 ‡aE9 -- Glaciology: meteorology and climatology.‡2local 700 1# ‡aLindzen, Richard S. 773 0# ‡7nnas ‡tAnnales Geophysicae. ‡gVol. 11(2-3) (1993) ‡wSPRI-68198 917 ## ‡aUnenhanced record from Muscat, imported 2019 948 3# ‡a20240328