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Record #126535:

Air flow and dry deposition of non-sea salt sulfate in polar firn: paleoclimatic implications / J. Cunningham, E.D. Waddington.

Title: Air flow and dry deposition of non-sea salt sulfate in polar firn: paleoclimatic implications / J. Cunningham, E.D. Waddington.
Author(s): Cunningham, J.
Waddington, E. D.
Date: 1993.
Abstract: At Vostok, Antarctica, nss concentration shows increase in glacial-period ice of 20 to 46% that cannot be attributed to changes in accumulation rate. Additional nss may be due to enhanced dry deposition of nss by topographic wind pumping during windy glacial periods. Volume flux of air into snow due to barometric pressure changes and air flow over surface microrelief is modelled. Gormley--Kennedy equation describes approximately how aerosols advected into snowpack are removed from air by diffusion to snow matrix. Barometric pressure and wind-speed data from several polar sites were used to quantify vertical volume flux of air and mass flux of nss. Model results indicate that air flow over small sastrugi is dominant dry deposition mechanism for nss. Palaeo-wind speed and surface roughness can affect aerosol record in ice cores.
Notes:

Offprint: Atmospheric Environment. Vol. 27A(17-18) :2943-2956.

Keywords: 551.578.46 -- Snow cover and snow patches.
54 -- Chemistry.
551.324.84 -- Land ice, impurities.
551.324 -- Land ice.
551.510.41 -- Atmosphere, chemical properties.
551.510.42 -- Atmospheric impurities, dust and aerosols.
E10 -- Glaciology: snow and avalanches.
(*2) -- Polar regions.
Location(s): SCO: SPRI-SHF: 551.510.41
SPRI record no.: 126535

MARCXML

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100 1# ‡aCunningham, J.
245 10 ‡aAir flow and dry deposition of non-sea salt sulfate in polar firn :‡bpaleoclimatic implications /‡cJ. Cunningham, E.D. Waddington.
260 ## ‡a[S.l.] :‡b[s.n.],‡c1993.
300 ## ‡ap. 2943-2956 :‡bdiags., tables.
500 ## ‡aOffprint: Atmospheric Environment. Vol. 27A(17-18) :2943-2956.
520 3# ‡aAt Vostok, Antarctica, nss concentration shows increase in glacial-period ice of 20 to 46% that cannot be attributed to changes in accumulation rate. Additional nss may be due to enhanced dry deposition of nss by topographic wind pumping during windy glacial periods. Volume flux of air into snow due to barometric pressure changes and air flow over surface microrelief is modelled. Gormley--Kennedy equation describes approximately how aerosols advected into snowpack are removed from air by diffusion to snow matrix. Barometric pressure and wind-speed data from several polar sites were used to quantify vertical volume flux of air and mass flux of nss. Model results indicate that air flow over small sastrugi is dominant dry deposition mechanism for nss. Palaeo-wind speed and surface roughness can affect aerosol record in ice cores.
650 07 ‡a551.578.46 -- Snow cover and snow patches.‡2udc
650 07 ‡a54 -- Chemistry.‡2udc
650 07 ‡a551.324.84 -- Land ice, impurities.‡2udc
650 07 ‡a551.324 -- Land ice.‡2udc
650 07 ‡a551.510.41 -- Atmosphere, chemical properties.‡2udc
650 07 ‡a551.510.42 -- Atmospheric impurities, dust and aerosols.‡2udc
650 07 ‡aE10 -- Glaciology: snow and avalanches.‡2local
651 #7 ‡a(*2) -- Polar regions.‡2udc
700 1# ‡aWaddington, E. D.
852 7# ‡2camdept‡bSCO‡cSPRI-SHF‡h551.510.41‡9Create 1 item record‡0Migrate
917 ## ‡aUnenhanced record from Muscat, imported 2019
948 3# ‡a20221002