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Record #172351:
- #172351
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MARC recordNorth Pacific seasonality and the glaciation of North America 2.7 million years ago / Gerald H. Haug, and 10 others.
| Title: | North Pacific seasonality and the glaciation of North America 2.7 million years ago / Gerald H. Haug, and 10 others. |
| Author(s): | Haug, Gerald H. |
| Date: | 2005. |
| In: | Nature. (2005.), Vol. 433(7028) (2005) |
| Abstract: | Examines role of precipitation originating from sub-Arctic Pacific in onset of northern hemisphere glaciation 2.7 Myr ago. Presents alkenone unsaturation ratios from sediment core and reviews paleoceanographic data relevant to North Pacific changes 2.4 to 3.2 Myr ago. These indicate late sea surface summer temperatures (SSTs) rose at c 2.7 Myr in response to stratification increase. Winter SSTs dropped, floating ice increased and glacial climate conditions ensued. Describes experiments using Earth system model CLIMBER-2 to examine effects of seasonality and stratification changes. Suggests observed summer warming extended into autumn, providing water vapour to northern North America and allowing initiation of glaciation. |
| Notes: | Nature. Vol. 433(7028) :821-825 (2005). |
| Keywords: | 551.461.8 -- Palaeo-oceanography. 551.464 -- Sea water, chemical properties. 551.465.4 -- Oceanography, stratification. 551.463.6 -- Sea water, thermal properties and heat flux. 547 -- Chemistry, organic. 551.583.7 -- Palaeoclimatology. 582.261 -- Diatomaceae. 551.77 -- Cenozoic. 551.782.2 -- Pliocene. 551.35 -- Marine sediments. 551.352/.353 -- Marine sediments, deep sea. 551.332.25 -- Glacio-marine deposits. 551.32 -- Glaciology. 551.324 -- Land ice. 551.324.24 -- Ice sheets and caps. 551.326.7 -- Sea ice. 551.326.1 -- Floating ice, distribution and movement. 551.336 -- Ice ages. 551.338 -- Ice ages, theories of causation. 551.578.4 -- Ice needles, sleet, falling snow and graupel. 551.324.431 -- Land ice, accumulation. 551.588.5 -- Climate, relationship with ice. 519.673 -- Modelling. E9 -- Glaciology: meteorology and climatology. (-062.1) -- Northern hemisphere. |
| SPRI record no.: | 172351 |
LDR 02668naa#a2200000#a#4500 001 SPRI-172351 005 20231130014005.0 007 ta 008 231130s2005####xx#ab#|##|###|0||#0|eng#d 035 ## ‡aSPRI-172351 040 ## ‡aUkCU-P‡beng‡eaacr 100 1# ‡aHaug, Gerald H. 245 10 ‡aNorth Pacific seasonality and the glaciation of North America 2.7 million years ago /‡cGerald H. Haug, and 10 others. 260 ## ‡a[S.l.] :‡b[s.n.],‡c2005. 300 ## ‡ap. 821-825 :‡bdiags., maps. 500 ## ‡aNature. Vol. 433(7028) :821-825 (2005). 520 3# ‡aExamines role of precipitation originating from sub-Arctic Pacific in onset of northern hemisphere glaciation 2.7 Myr ago. Presents alkenone unsaturation ratios from sediment core and reviews paleoceanographic data relevant to North Pacific changes 2.4 to 3.2 Myr ago. These indicate late sea surface summer temperatures (SSTs) rose at c 2.7 Myr in response to stratification increase. Winter SSTs dropped, floating ice increased and glacial climate conditions ensued. Describes experiments using Earth system model CLIMBER-2 to examine effects of seasonality and stratification changes. Suggests observed summer warming extended into autumn, providing water vapour to northern North America and allowing initiation of glaciation. 530 ## ‡aAlso issued online ‡uurn:doi:10.1038/nature03332‡uhttps://dx.doi.org/10.1038/nature03332 650 07 ‡a551.461.8 -- Palaeo-oceanography.‡2udc 650 07 ‡a551.464 -- Sea water, chemical properties.‡2udc 650 07 ‡a551.465.4 -- Oceanography, stratification.‡2udc 650 07 ‡a551.463.6 -- Sea water, thermal properties and heat flux.‡2udc 650 07 ‡a547 -- Chemistry, organic.‡2udc 650 07 ‡a551.583.7 -- Palaeoclimatology.‡2udc 650 07 ‡a582.261 -- Diatomaceae.‡2udc 650 07 ‡a551.77 -- Cenozoic.‡2udc 650 07 ‡a551.782.2 -- Pliocene.‡2udc 650 07 ‡a551.35 -- Marine sediments.‡2udc 650 07 ‡a551.352/.353 -- Marine sediments, deep sea.‡2udc 650 07 ‡a551.332.25 -- Glacio-marine deposits.‡2udc 650 07 ‡a551.32 -- Glaciology.‡2udc 650 07 ‡a551.324 -- Land ice.‡2udc 650 07 ‡a551.324.24 -- Ice sheets and caps.‡2udc 650 07 ‡a551.326.7 -- Sea ice.‡2udc 650 07 ‡a551.326.1 -- Floating ice, distribution and movement.‡2udc 650 07 ‡a551.336 -- Ice ages.‡2udc 650 07 ‡a551.338 -- Ice ages, theories of causation.‡2udc 650 07 ‡a551.578.4 -- Ice needles, sleet, falling snow and graupel.‡2udc 650 07 ‡a551.324.431 -- Land ice, accumulation.‡2udc 650 07 ‡a551.588.5 -- Climate, relationship with ice.‡2udc 650 07 ‡a519.673 -- Modelling.‡2udc 650 07 ‡aE9 -- Glaciology: meteorology and climatology.‡2local 651 #7 ‡a(-062.1) -- Northern hemisphere.‡2udc 773 0# ‡7nnas ‡tNature. ‡gVol. 433(7028) (2005) ‡wSPRI-1046 916 ## ‡a2005/06/05 -- RF 917 ## ‡aUnenhanced record from Muscat, imported 2019 948 3# ‡a20231130 ‡bRF