the effect of the complex coastline in the houston area john nielsen-gammon texas a&m university
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The Effect of the Complex Coastline in the Houston Area
John Nielsen-Gammon
Texas A&M University
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Land Use ClassificationStephen Stetson,
Global Environmental Management, Inc.
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GOES satellite data assimilation project with R. McNider, A. Pour Biazar, and S.-O Han
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from Baker et al. (2001, J. Hydrom.)
ENHANCEMENT
REDUCTION
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from Gibson and Vonder Haar (1990 MWR)
Cloud (2 PM CST)
Cold Cloud
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from Marshall et al. (2004 MWR)
pre-1900 1993
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N2 xx + (f2 – 2) zz = - Qx
• Hyperbolic (wavelike solutions) if (f2 – 2) < 0
• This happens within 30o of equator
• Aspect ratio of energy propagation and phase lines given by L/H = H/ (f2 – 2)1/2
(from Rotunno 1983)
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18 UTC 8/30/00
Wind, temperature (F), dew point (F), ozone (ppbV)
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19 UTC 8/30/00
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20 UTC 8/30/00
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21 UTC 8/30/00
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22 UTC 8/30/00
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23 UTC 8/30/00
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00 UTC 8/31/00
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14 UTC 8/25/00
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16 UTC 8/25/00
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18 UTC 8/25/00
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20 UTC 8/25/00
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22 UTC 8/25/00
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00 UTC 8/26/00
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Observed winds, Aug 25-29, 2000
Liberty Aug 25,27,28,29 445 m
3P
12N
9A
6A
3A
12M9P
6P
-3
-2
-1
0
1
2
3
4
5
6
7
8
-3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
U component
V c
om
po
ne
nt
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Scientific Issues
• Convergence associated with complex coastline
• Nonlinear interaction with urban heat island
• Sea breeze front depth and convective initiation
• Role of large-scale inertial cycle and upward-propagating inertia-gravity waves