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Volumn 23, Issue 7-8, 2004, Pages 803-813

New estimations of precipitation and surface sublimation in East Antarctica from snow accumulation measurements

Author keywords

[No Author keywords available]

Indexed keywords

ESTIMATION METHOD; PRECIPITATION ASSESSMENT; SNOW ACCUMULATION; SUBLIMATION;

EID: 19944433045     PISSN: 09307575     EISSN: 14320894     Source Type: Journal    
DOI: 10.1007/s00382-004-0462-5     Document Type: Article
Times cited : (106)

References (66)
  • 1
    • 0024257429 scopus 로고
    • Concerning the deposition and diagenesis of strata in polar firn
    • Alley RB (1988) Concerning the deposition and diagenesis of strata in polar firn. J Glaciol 34(118):283-290
    • (1988) J. Glaciol. , vol.34 , Issue.118 , pp. 283-290
    • Alley, R.B.1
  • 3
    • 0002940972 scopus 로고
    • Winds on the ice slopes of Antarctica
    • Pergamon Press New York
    • FK Ball 1960 Winds on the ice slopes of Antarctica In: Antarctic meteorology. Pergamon Press New York pp9-16
    • (1960) Antarctic Meteorology , pp. 9-16
    • Ball, F.K.1
  • 4
    • 0032410124 scopus 로고    scopus 로고
    • The contribution of snowdrift sublimation to the surface mass balance of Antarctica
    • Bintanja R (1998) The contribution of snowdrift sublimation to the surface mass balance of Antarctica. Ann Glaciol 27:251-259
    • (1998) Ann. Glaciol. , vol.27 , pp. 251-259
    • Bintanja, R.1
  • 5
    • 0033428690 scopus 로고    scopus 로고
    • On the glaciological, meteorological, and climatological significance of Antarctic blue ice areas
    • 10.1029/1999RG900007
    • Bintanja R (1999) On the glaciological, meteorological, and climatological significance of Antarctic blue ice areas. Rev Geophys 37(3):337-359 10.1029/1999RG900007
    • (1999) Rev. Geophys. , vol.37 , Issue.3 , pp. 337-359
    • Bintanja, R.1
  • 6
    • 0034925621 scopus 로고    scopus 로고
    • Observations of snowdrift over Antarctic snow and blue-ice surfaces
    • Bintanja R, Lilienthal H, Tug H (2001) Observations of snowdrift over Antarctic snow and blue-ice surfaces. Ann Glaciol 32:168-174
    • (2001) Ann. Glaciol. , vol.32 , pp. 168-174
    • Bintanja, R.1    Lilienthal, H.2    Tug, H.3
  • 7
    • 0035724174 scopus 로고    scopus 로고
    • A simple parameterization for snowdrift sublimation over Antarctic snow surface
    • Bintanja R, Reijmer CH (2001) A simple parameterization for snowdrift sublimation over Antarctic snow surface. J Geophys Res 106(D23):31,739-31,748
    • (2001) J. Geophys. Res. , vol.106 , Issue.D23
    • Bintanja, R.1    Reijmer, C.H.2
  • 8
    • 0002782236 scopus 로고
    • Accumulation in the region of Wilkes, Wilkes Land, Antarctica
    • Black HP, Budd W (1964) Accumulation in the region of Wilkes, Wilkes Land, Antarctica. J Glaciol 5(37):3-15
    • (1964) J. Glaciol. , vol.5 , Issue.37 , pp. 3-15
    • Black, H.P.1    Budd, W.2
  • 9
    • 0024189595 scopus 로고
    • Snowfall in high southern latitudes
    • Bromwich DH (1988) Snowfall in high southern latitudes. Rev Geophys 26(1):149-168
    • (1988) Rev. Geophys. , vol.26 , Issue.1 , pp. 149-168
    • Bromwich, D.H.1
  • 11
    • 1842627700 scopus 로고    scopus 로고
    • Snowcover in Antarctica: Physical and morphological features of surface layers
    • Cagnati A, Valt M, Casacchia R, Salvatori R (2003) Snowcover in Antarctica: Physical and morphological features of surface layers. Terra Antartica Rep 8:5-10
    • (2003) Terra. Antartica Rep. , vol.8 , pp. 5-10
    • Cagnati, A.1    Valt, M.2    Casacchia, R.3    Salvatori, R.4
  • 12
    • 0031947086 scopus 로고    scopus 로고
    • Spatial and temporal variability of Antarctic precipitation from atmospheric methods
    • 10.1175/1520-0442(1998)011<0334:SATVOA>2.0.CO;2
    • Cullather RI, Bromwich DH, Van Woert ML (1998) Spatial and temporal variability of Antarctic precipitation from atmospheric methods. J Climate 11:334-367 10.1175/1520-0442(1998)011<0334:SATVOA>2.0.CO;2
    • (1998) J. Climate , vol.11 , pp. 334-367
    • Cullather, R.I.1    Bromwich, D.H.2    Van Woert, M.L.3
  • 14
    • 0025622486 scopus 로고
    • The parameterization of the annual surface temperature and mass balance of Antarctica
    • Fortuin JPF, Oerlemans J (1990) The parameterization of the annual surface temperature and mass balance of Antarctica. Ann Glaciol 14:78-84
    • (1990) Ann. Glaciol. , vol.14 , pp. 78-84
    • Fortuin, J.P.F.1    Oerlemans, J.2
  • 15
    • 0036299849 scopus 로고    scopus 로고
    • Ice dynamics and climatic surface parameters in East Antarctica from Terra Nova Bay to Talos Dome and Dome C: ITASE Italian Traverses
    • Frezzotti M, Flora O (2002) Ice dynamics and climatic surface parameters in East Antarctica from Terra Nova Bay to Talos Dome and Dome C: 0ITASE Italian Traverses. Terra Antartica 9(1):47-54
    • (2002) Terra Antartica , vol.9 , Issue.1 , pp. 47-54
    • Frezzotti, M.1    Flora, O.2
  • 16
    • 33646525998 scopus 로고    scopus 로고
    • Snow megadune in Antarctica: Sedimentary structure and genesis
    • Doi: 10.1029/2001JD000673
    • Frezzotti M, Gandolfi S, Urbini S (2002a) Snow megadune in Antarctica: sedimentary structure and genesis. J Geophys Res 107(D18):4,344. Doi: 10.1029/2001JD000673
    • (2002) J. Geophys. Res. , vol.107 , Issue.D18
    • Frezzotti, M.1    Gandolfi, S.2    Urbini, S.3
  • 17
    • 0036339557 scopus 로고    scopus 로고
    • Snow dune and glazed surface in Antarctica: New field and remote sensing data
    • Frezzotti M, Gandolfi S, La Marca F, Urbini S (2002b) Snow dune and glazed surface in Antarctica: New field and remote sensing data. Ann Glaciol 34:81-88
    • (2002) Ann. Glaciol. , vol.34 , pp. 81-88
    • Frezzotti, M.1    Gandolfi, S.2    La Marca, F.3    Urbini, S.4
  • 19
    • 0020436493 scopus 로고
    • The role of sublimation and condensation in the formation of ice sheet surface at Mizuho Station, Antarctica
    • Fujii Y, Kusunoki K (1982) The role of sublimation and condensation in the formation of ice sheet surface at Mizuho Station, Antarctica. J Geophys Res 87(C6):4,293-4,300
    • (1982) J. Geophys. Res. , vol.87 , Issue.C6
    • Fujii, Y.1    Kusunoki, K.2
  • 20
    • 0031734459 scopus 로고    scopus 로고
    • Simulation of blowing snow over the Antarctic ice sheet
    • Gallée H (1998) Simulation of blowing snow over the Antarctic ice sheet. Ann Glaciol 26:203-206
    • (1998) Ann. Glaciol. , vol.26 , pp. 203-206
    • Gallée, H.1
  • 21
    • 0035313111 scopus 로고    scopus 로고
    • Impact of snow drift on the Antarctic Ice Sheet surface mass balance: Possible sensitivity to snow-surface properties
    • 10.1023/A:1018776422809
    • Gallée H, Guyomarch G, Brun E (2001) Impact of snow drift on the Antarctic Ice Sheet surface mass balance: Possible sensitivity to snow-surface properties. Boundary-Layer Meteorol 99:1-19 10.1023/A:1018776422809
    • (2001) Boundary-Layer Meteorol. , vol.99 , pp. 1-19
    • Gallée, H.1    Guyomarch, G.2    Brun, E.3
  • 22
    • 0029538708 scopus 로고
    • ECMWF analyses and predictions of surface climate of Greenland and Antarctica
    • Genthon C, Braun A (1995) ECMWF analyses and predictions of surface climate of Greenland and Antarctica. J Climate 8(10):2,324-2,332
    • (1995) J. Climate , vol.8 , Issue.10
    • Genthon, C.1    Braun, A.2
  • 23
    • 0000582395 scopus 로고    scopus 로고
    • Convergence and disposal of energy and moisture on the Antarctic polar cap from ECMWF reanalyses and forecasts
    • Genthon C, Krinner G (1998) Convergence and disposal of energy and moisture on the Antarctic polar cap from ECMWF reanalyses and forecasts. J Climate 11:1,703-1,716
    • (1998) J. Climate , vol.11
    • Genthon, C.1    Krinner, G.2
  • 24
    • 0034778280 scopus 로고    scopus 로고
    • The Antarctic surface mass balance and systematic biases in GCMs
    • Genthon C, Krinner G (2001) The Antarctic surface mass balance and systematic biases in GCMs. J Geophys Res 106:20,653-20,664
    • (2001) J. Geophys. Res. , vol.106
    • Genthon, C.1    Krinner, G.2
  • 25
    • 0026488621 scopus 로고
    • Atmospheric net transport of water vapor and latent heat across 70°S
    • Giovinetto MB, Bromwich DH, Wendler G (1992) Atmospheric net transport of water vapor and latent heat across 70°S. J Geophys Res 97(D1):917-930
    • (1992) J. Geophys. Res. , vol.97 , Issue.D1 , pp. 917-930
    • Giovinetto, M.B.1    Bromwich, D.H.2    Wendler, G.3
  • 26
    • 0025583662 scopus 로고
    • Dependence of Antarctic surface mass balance on temperature, elevation, and distance to open ocean
    • Giovinetto MB, Waters NM, Bentley CR (1990) Dependence of Antarctic surface mass balance on temperature, elevation, and distance to open ocean. J Geophys Res 95(D4):3,517-3,531
    • (1990) J. Geophys. Res. , vol.95 , Issue.D4
    • Giovinetto, M.B.1    Waters, N.M.2    Bentley, C.R.3
  • 27
    • 0034496989 scopus 로고    scopus 로고
    • Spatial distribution of net surface accumulation on the Antarctic ice sheet
    • Giovinetto MB, Zwally HJ (2000) Spatial distribution of net surface accumulation on the Antarctic ice sheet. Ann Glaciol 3:171-178
    • (2000) Ann. Glaciol. , vol.3 , pp. 171-178
    • Giovinetto, M.B.1    Zwally, H.J.2
  • 28
  • 29
    • 0000919555 scopus 로고
    • On the accumulation and seasonal stratification of snow at the South Pole
    • Gow AJ (1965) On the accumulation and seasonal stratification of snow at the South Pole. J Glaciol 5:467-477
    • (1965) J. Glaciol. , vol.5 , pp. 467-477
    • Gow, A.J.1
  • 30
    • 0021066046 scopus 로고
    • Climatic information over the last century deduced from a detailed isotopic record in the South Pole snow
    • Jouzel J, Merlivat L, Petit JR, Lorius C (1983) Climatic information over the last century deduced from a detailed isotopic record in the South Pole snow. J Geophys Res 88(C4):2,693-2,703
    • (1983) J. Geophys. Res. , vol.88 , Issue.C4
    • Jouzel, J.1    Merlivat, L.2    Petit, J.R.3    Lorius, C.4
  • 31
    • 0034856880 scopus 로고    scopus 로고
    • The seasonal cycle of sublimation at Halley, Antarctica
    • King JC, Anderson PS, Mann GW (2001) The seasonal cycle of sublimation at Halley, Antarctica. J Glaciol 47(156):1-8
    • (2001) J. Glaciol. , vol.47 , Issue.156 , pp. 1-8
    • King, J.C.1    Anderson, P.S.2    Mann, G.W.3
  • 32
    • 0003909655 scopus 로고    scopus 로고
    • Cambridge University Press, Atmospheric and Space Science Series, Cambridge
    • King JC, Turner J (1997) Antarctic meteorology and climatology. Cambridge University Press, Atmospheric and Space Science Series, Cambridge, p 408
    • (1997) Antarctic Meteorology and Climatology , pp. 408
    • King, J.C.1    Turner, J.2
  • 34
    • 84872984712 scopus 로고
    • Katabatic snow storms in stable atmospheric conditions at Mizuho Station, Antarctica
    • Kobayashi S, Ishikawa N, Ohata T (1985) Katabatic snow storms in stable atmospheric conditions at Mizuho Station, Antarctica. Ann Glaciol 6:229-231
    • (1985) Ann. Glaciol. , vol.6 , pp. 229-231
    • Kobayashi, S.1    Ishikawa, N.2    Ohata, T.3
  • 35
    • 0021883348 scopus 로고
    • The effect of blowing snow on katabatic winds in Antarctica
    • Kodama Y, Wendler G, Gosink J (1985) The effect of blowing snow on katabatic winds in Antarctica. Ann Glaciol 6:59-62
    • (1985) Ann. Glaciol. , vol.6 , pp. 59-62
    • Kodama, Y.1    Wendler, G.2    Gosink, J.3
  • 36
    • 0002015117 scopus 로고
    • A stratigraphic methods of determining the snow accumulation rate at Plateau Station, Antarctica, and application to South Pole - Queen Maud Land traverse 2, 1965-1966
    • Crary AP (ed) Antarctic Snow and Ice Studies II American Geophysical Union, Washington
    • Koerner RM (1971) A stratigraphic methods of determining the snow accumulation rate at Plateau Station, Antarctica, and application to South Pole - Queen Maud Land traverse 2, 1965-1966. In: Crary AP (ed) Antarctic snow and ice studies II. American Geophysical Union, Washington. Antarctic Res Ser 16:225-238
    • (1971) Antarctic Res. Ser. , vol.16 , pp. 225-238
    • Koerner, R.M.1
  • 38
    • 12744249888 scopus 로고
    • Contributions to the glaciology of the Antarctic
    • Loewe F (1970) Contributions to the glaciology of the Antarctic. J Glaciol 2(19):657-665
    • (1970) J. Glaciol. , vol.2 , Issue.19 , pp. 657-665
    • Loewe, F.1
  • 40
    • 0000280138 scopus 로고    scopus 로고
    • Antarctic's role pursued in global climate change
    • Mayewski PA, Goodwin ID (1999) Antarctic's role pursued in global climate change. Eos Trans 80:398-400
    • (1999) Eos. Trans. , vol.80 , pp. 398-400
    • Mayewski, P.A.1    Goodwin, I.D.2
  • 41
    • 0022193921 scopus 로고
    • The dependence of Antarctic accumulation rates on surface temperature and elevation
    • Muszynski I, Birchfield GE (1985) The dependence of Antarctic accumulation rates on surface temperature and elevation. Tellus 37A:204-208
    • (1985) Tellus , vol.37 A , pp. 204-208
    • Muszynski, I.1    Birchfield, G.E.2
  • 42
    • 17044389417 scopus 로고    scopus 로고
    • Atmospheric signals and characteristics of accumulation in Dronning Maud Land, Antarctica
    • Noone D, Turner J, Mulvaney R (1999) Atmospheric signals and characteristics of accumulation in Dronning Maud Land, Antarctica. J Geophys Res 104(D16):19,191-19,211
    • (1999) J. Geophys. Res. , vol.104 , Issue.D16
    • Noone, D.1    Turner, J.2    Mulvaney, R.3
  • 43
    • 0000166586 scopus 로고
    • Continental scale of the Antarctic katabatic wind regime
    • 10.1175/1520-0442(1991)004<0135:CSSOTA>2.0.CO;2
    • Parish TR, Bromwich DH (1991) Continental scale of the Antarctic katabatic wind regime. J Climate 4(2):135-146 10.1175/1520-0442(1991)004<0135:CSSOTA>2.0.CO;2
    • (1991) J. Climate , vol.4 , Issue.2 , pp. 135-146
    • Parish, T.R.1    Bromwich, D.H.2
  • 44
    • 0001642380 scopus 로고
    • Accumulation in Terre Adélie, Antarctica: Effect of meteorological parameters
    • Pettré P, Pinglot JF, Pourchet M, Reynaud L (1986) Accumulation in Terre Adélie, Antarctica: Effect of meteorological parameters. J Glaciol 32:486-500
    • (1986) J. Glaciol. , vol.32 , pp. 486-500
    • Pettré, P.1    Pinglot, J.F.2    Pourchet, M.3    Reynaud, L.4
  • 45
    • 0008054516 scopus 로고
    • Accumulation on the south Pole-Queen Maud Land Traverse, 1964-1968
    • 1:CAS:528:DyaE38XislagtQ%3D%3D Crary AP (ed) Antarctic Snow and Ice Studies II American Geophysical Union, Washington
    • Picciotto E, Crozaz G, De Breuk W (1971) Accumulation on the south Pole-Queen Maud Land Traverse, 1964-1968. In: Crary AP (ed) Antarctic snow and ice studies II. American Geophysical Union, Washington. Antarctic Res Series 16:257-291 1:CAS:528:DyaE38XislagtQ%3D%3D
    • (1971) Antarctic Res. Series , vol.16 , pp. 257-0291
    • Picciotto, E.1    Crozaz, G.2    De Breuk, W.3
  • 46
    • 0024845130 scopus 로고
    • A process-based model of snow drifting
    • Pomeroy JW (1989) A process-based model of snow drifting. Ann Glaciol 13:237-240
    • (1989) Ann. Glaciol. , vol.13 , pp. 237-240
    • Pomeroy, J.W.1
  • 49
    • 0036332911 scopus 로고    scopus 로고
    • Random fluctuations of snow accumulation over Antarctica and their relation to sea level change
    • 10.1007/s00382-002-0226-z
    • Rémy F, Testut L, Legrésy B (2002) Random fluctuations of snow accumulation over Antarctica and their relation to sea level change. Climate Dyn 19:267-276 10.1007/s00382-002-0226-z
    • (2002) Climate Dyn. , vol.19 , pp. 267-276
    • Rémy, F.1    Testut, L.2    Legrésy, B.3
  • 51
    • 0037199953 scopus 로고    scopus 로고
    • Mass balance of polar ice sheets
    • Rignot E, Thomas RH (2002) Mass balance of polar ice sheets. Science 297:1,502-1,506
    • (2002) Science , vol.297
    • Rignot, E.1    Thomas, R.H.2
  • 53
    • 0002651591 scopus 로고
    • Sensible and latent heat flux estimates in Antarctica
    • Bromwich DH, Stearns CR (eds) Antarctic meteorology and climatology: studies based on automatic weather stations Washington. American Geophysical Union
    • Stearns CR, Weidner GA (1993) Sensible and latent heat flux estimates in Antarctica. In: Bromwich DH, Stearns CR (eds) Antarctic meteorology and climatology: Studies based on automatic weather stations. American Geophysical Union, Washington. Antarctic Res Ser 61:109-138
    • (1993) Antarctic Res. Ser. , vol.61 , pp. 109-138
    • Stearns, C.R.1    Weidner, G.A.2
  • 54
    • 0001448108 scopus 로고
    • Glaciological work of the 1959-1960 US Victoria Land Traverse
    • Stuart AW, Heine AJ (1961) Glaciological work of the 1959-1960 US Victoria Land Traverse. J Glaciol 997-1002
    • (1961) J. Glaciol. , pp. 997-1002
    • Stuart, A.W.1    Heine, A.J.2
  • 55
    • 0003205307 scopus 로고
    • A bare ice field in East Queen Maud Land, Antarctica, caused by horizontal divergence of snow
    • Takahashi S, Naruse R, Masayoshi N, Mae S (1988) A bare ice field in East Queen Maud Land, Antarctica, caused by horizontal divergence of snow. Ann Glaciol 11:150-160
    • (1988) Ann. Glaciol. , vol.11 , pp. 150-160
    • Takahashi, S.1    Naruse, R.2    Masayoshi, N.3    Mae, S.4
  • 56
    • 0033563928 scopus 로고    scopus 로고
    • Spatial and temporal variability of net snow accumulation over the Antarctic from ECMWF re-analysis project data
    • 10.1002/(SICI)1097-0088(19990615)19:7<697::AID-JOC392>3.3.CO;2-V
    • Turner J, Connolley WM, Leonard S, Marshal GJ, Vaughan DG (1999) Spatial and temporal variability of net snow accumulation over the Antarctic from ECMWF re-analysis project data. Int J Climatol 19:697-724 10.1002/(SICI)1097-0088(19990615)19:7<697::AID-JOC392>3.3.CO;2-V
    • (1999) Int. J. Climatol. , vol.19 , pp. 697-724
    • Turner, J.1    Connolley, W.M.2    Leonard, S.3    Marshal, G.J.4    Vaughan, D.G.5
  • 58
    • 0031396593 scopus 로고    scopus 로고
    • Spatial and temporal variation of sublimation on Antarctica: Result of a high-resolution general circulation model
    • 0van der Broeke M (1997) Spatial and temporal variation of sublimation on Antarctica: Result of a high-resolution general circulation model. J Geophys Res 102:29,765-29,777
    • (1997) J. Geophys. Res. , vol.102
    • van der Broeke, M.1
  • 60
    • 0036689460 scopus 로고    scopus 로고
    • The spatial and temporal variability of the surface mass balance in Antarctica: Result from a regional atmospheric climate model
    • van Lipzig NPM, van Meijgaard E, Oerlemans J (2002) The spatial and temporal variability of the surface mass balance in Antarctica: Result from a regional atmospheric climate model. Int J Climatol 22:1,197-1,217
    • (2002) Int. J. Climatol. , vol.22
    • van Lipzig, N.P.M.1    van Meijgaard, E.2    Oerlemans, J.3
  • 61
    • 0033117499 scopus 로고    scopus 로고
    • Reassessment of net surface mass balance in Antarctica
    • 10.1175/1520-0442(1999)012<0933:RONSMB>2.0.CO;2
    • Vaughan DG, Bamber JL, Giovinetto M, Russell J, Cooper PR (1999) Reassessment of net surface mass balance in Antarctica. J Climate 12:933-946 10.1175/1520-0442(1999)012<0933:RONSMB>2.0.CO;2
    • (1999) J. Climate , vol.12 , pp. 933-946
    • Vaughan, D.G.1    Bamber, J.L.2    Giovinetto, M.3    Russell, J.4    Cooper, P.R.5
  • 62
    • 0000915370 scopus 로고
    • Distribution of surface features of snow cover in Mizuho Plateau
    • 1:CAS:528:DyaE1cXltlaqtrs%3D
    • Watanabe O (1978) Distribution of surface features of snow cover in Mizuho Plateau. Mem Natl Inst Polar Res Spec Issue 7:154-181 1:CAS:528:DyaE1cXltlaqtrs%3D
    • (1978) Mem. Natl. Inst. Polar Res. Spec. Issue , vol.71 , pp. 154-181
    • Watanabe, O.1
  • 63
    • 0001920380 scopus 로고
    • Katabatic winds in Adélie Coast
    • Bromwich DH, Stearns CR (eds) Antarctic meteorology and climatology: Studies based on automatic weather stations American Geophysical Union, Washington
    • Wendler G, André JC Pettré P, Gosink J, Parish T (1993) Katabatic winds in Adélie Coast. In: Bromwich DH, Stearns CR (eds) Antarctic meteorology and climatology: Studies based on automatic weather stations. American Geophysical Union, Washington. Antarctic Res Ser 61:23-46
    • (1993) Antarctic Res. Ser. , vol.61 , pp. 23-46
    • Wendler, G.1    André, J.C.2    Pettré, P.3    Gosink, J.4    Parish, T.5
  • 64
    • 0002803806 scopus 로고
    • Effect of inversion winds on topographic detail and mass balance on inland ice sheets
    • Whillans IM (1975) Effect of inversion winds on topographic detail and 0mass balance on inland ice sheets. J Glaciol 14(70):85-90
    • (1975) J. Glaciol. , vol.14 , Issue.70 , pp. 85-90
    • Whillans, I.M.1
  • 66
    • 0030439026 scopus 로고    scopus 로고
    • Orographic clouds in north Victoria Land from AVHRR images
    • Zibordi G, Frezzotti M (1996) Orographic clouds in north Victoria Land from AVHRR images. Polar rec 32(183):317-324
    • (1996) Polar Rec. , vol.32 , Issue.183 , pp. 317-324
    • Zibordi, G.1    Frezzotti, M.2


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