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Last saturation applications to the ...

Hurley, John Vincent.

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Last saturation applications to the humidity of the subtropical middle troposphere.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Last saturation applications to the humidity of the subtropical middle troposphere./
作者:	Hurley, John Vincent.
面頁冊數:	119 p.
附註:	Source: Dissertation Abstracts International, Volume: 72-04, Section: B, page: .
Contained By:	Dissertation Abstracts International72-04B.
標題:	Geophysics. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3440146
ISBN:	9781124466149

Last saturation applications to the humidity of the subtropical middle troposphere.
Hurley, John Vincent.

Last saturation applications to the humidity of the subtropical middle troposphere. - 119 p.

Source: Dissertation Abstracts International, Volume: 72-04, Section: B, page: .

Thesis (Ph.D.)--The University of New Mexico, 2010.

I completed atmospheric transport modeling studies into distributions of subtropical water vapor, to identify the mechanisms by which humidity varies over distinct temporal scales: inter-annual time-scales associated with the El Nino -- Southern Oscillation, over the next century in response to global warming, and over periods of about 2 to 7 days. The latter study on 2 to 7 day variability is a modeling component of a field campaign from October -- November, 2008, involving continuous in-situ measurement of water vapor stable isotope compositions at the Mauna Loa Observatory, Hawaii. These studies were conducted from a last saturation perspective, considering humidity and water vapor isotope composition of sub-saturated air to have effectively been set by the conditions at which the air parcels last encountered saturation.

ISBN: 9781124466149Subjects--Topical Terms:

535228
Geophysics.

Last saturation applications to the humidity of the subtropical middle troposphere.
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245 1 0 $a Last saturation applications to the humidity of the subtropical middle troposphere.
300 $a 119 p.
500 $a Source: Dissertation Abstracts International, Volume: 72-04, Section: B, page: .
500 $a Adviser: Joseph Galewsky.
502 $a Thesis (Ph.D.)--The University of New Mexico, 2010.
520 $a I completed atmospheric transport modeling studies into distributions of subtropical water vapor, to identify the mechanisms by which humidity varies over distinct temporal scales: inter-annual time-scales associated with the El Nino -- Southern Oscillation, over the next century in response to global warming, and over periods of about 2 to 7 days. The latter study on 2 to 7 day variability is a modeling component of a field campaign from October -- November, 2008, involving continuous in-situ measurement of water vapor stable isotope compositions at the Mauna Loa Observatory, Hawaii. These studies were conducted from a last saturation perspective, considering humidity and water vapor isotope composition of sub-saturated air to have effectively been set by the conditions at which the air parcels last encountered saturation.
520 $a During El Nino northern winter, the free troposphere over the subtropical north Pacific is both drier and warmer than during La Nina. For instance, during El Nino (La Nina) northern winter, 57% (49%) of the air at 20°N and 633 hPa over the north Pacific was last saturated poleward of 20°N and above 500 hPa. ENSO humidity variability can be explained in terms of changes in the location of last saturation, and not by changes in the temperature field.
520 $a Modeled specific humidity at the subtropical relative humidity minimum is projected to increase by about 0.2-0.3 g/kg, by the end of this century, in the simulations completed for the Intergovernmental Panel on Climate Change (IPCC) Fourth Assessment Report (AR4). Most of this projected increase can be attributed to last saturation within what will be a warmer free troposphere. The increase in specific humidity is partially offset by a poleward and upward shift of baroclinic instability and saturation patterns that effectively yield drier air to the RH minimum via isentropic transport.
520 $a Two to 7 day variability of nighttime water vapor deltaD values at the National Oceanic and Atmospheric Administration's Mauna Loa Observatory, Hawaii, range from -365&permil; to -137&permil;. Last saturation of air at Mauna Loa Observatory occurs primarily in the extra-tropical middle-upper troposphere, along mid-latitude baroclinic zones, and secondarily near Hawaii within mesoscale convective systems. Two to 7 day periods of lower (higher) water vapor deltaD values at MLO correspond to extra-tropical (near-Hawaii) last saturation.
590 $a School code: 0142.
650 4 $a Geophysics. $3 535228
650 4 $a Climate Change. $3 894284
650 4 $a Atmospheric Sciences. $3 1019179
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710 2 $a The University of New Mexico. $b Earth and Planetary Sciences. $3 1677846
773 0 $t Dissertation Abstracts International $g 72-04B.
790 1 0 $a Galewsky, Joseph, $e advisor
790 1 0 $a Sharp, Zachary D. $e committee member
790 1 0 $a Gutzler, David S. $e committee member
790 1 0 $a Fawcett, Peter J. $e committee member
790 1 0 $a Minschwaner, Kenneth R. $e committee member
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792 $a 2010
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