Contextual analysis: Ivan - September 2004 .


39 views
Uploaded on:
Category: Sports / Games
Description
Case Study: Ivan - September 2004. Jared Klein – SUNY-Albany. 300 hPa Analyses : 1200 UTC 16 September 2004. Precipitable water (mm), 300 hPa h (dam), wind speed (m s −1 ), and div (10 −5 s −1 ). 300 hPa frontogenesis [K (100 km) − 1 (3 h) − 1 ], θ (K), and wind barbs (kt). 1.0° GFS.
Transcripts
Slide 1

Contextual investigation: Ivan - September 2004 Jared Klein – SUNY-Albany

Slide 2

300 hPa Analyses : 1200 UTC 16 September 2004 Precipitable water (mm), 300 hPa h (dam), wind speed (m s −1 ), and div (10 −5 s −1 ) 300 hPa frontogenesis [K (100 km) − 1 (3 h) − 1 ], θ (K), and wind thorns (kt) 1.0° GFS

Slide 3

300 hPa Analyses : 1200 UTC 17 September 2004 Frontogenesis in fly passageway locale Confluent stream in equatorward fly passage area Precipitable water (mm), 300 hPa h (dam), wind speed (m s −1 ), and div (10 −5 s −1 ) 300 hPa frontogenesis [K (100 km) − 1 (3 h) − 1 ], θ (K), and wind spikes (kt) 1.0° GFS

Slide 4

300 hPa Analyses : 1200 UTC 18 September 2004 Strengthening downstream ULJ and edge Strong frontogenesis in fly passage district Precipitable water (mm), 300 hPa h (dam), wind speed (m s −1 ), and div (10 −5 s −1 ) 300 hPa frontogenesis [K (100 km) − 1 (3 h) − 1 ], θ (K), and wind points (kt) 1.0° GFS

Slide 5

925 hPa Analyses : 1200 UTC 16 September 2004 Pre-existing baroclinic zone Symmetric reflectivity structure WSI radar, 925 hPa θ e (K) and wind spikes (kt) 925 hPa frontogenesis [K (100 km) − 1 (3 h) − 1 ], θ (K), and wind points (kt) 1.0° GFS

Slide 6

925 hPa Analyses : 1200 UTC 17 September 2004 Northeastward augmentation of precip field along baroclinic zone Band of frontogenesis along baroclinic zone WSI radar, 925 hPa θ e (K) and wind spikes (kt) 925 hPa frontogenesis [K (100 km) − 1 (3 h) − 1 ], θ (K), and wind spikes (kt) 1.0° GFS

Slide 7

925 hPa Analyses : 1200 UTC 18 September 2004 Highest reflectivity close nose of LLJ/θ e edge pivot Strong frontogenesis along warm frontal zone WSI radar, 925 hPa θ e (K) and wind spikes (kt) 925 hPa frontogenesis [K (100 km) − 1 (3 h) − 1 ], θ (K), and wind thorns (kt) 1.0° GFS

Slide 8

925 hPa Q Vector Diagnosis : 0000 UTC 18 September 2004 Q n Q n div–con groups inside frontal zone Q s Radar at 1200 UTC 17 September 2004 Radar at 0000 UTC 18 September 2004 Radar at 0000 UTC 18 September 2004 Highest reflectivity close most grounded QG compelling for climb WSI radar Q s div–con couplet inside warm trough–ridge 1.0° GFS Q vectors (10 − 10 K m − 1 s − 1 starting at 2.5 × 10 − 11 ), θ (K) formed in green, and Q div – con (10 − 15 K m − 2 s − 1 ) shaded in cool–warm hues

Slide 9

925 hPa Q Vector Diagnosis : 0600 UTC 18 September 2004 Q n Q s Radar at 1200 UTC 17 September 2004 Radar at 0000 UTC 18 September 2004 Radar at 0600 UTC 18 September 2004 Highest reflectivity close most grounded QG driving for rising WSI radar 1.0° GFS Q vectors (10 − 10 K m − 1 s − 1 starting at 2.5 × 10 − 11 ), θ (K) shaped in green, and Q div – con (10 − 15 K m − 2 s − 1 ) shaded in cool–warm hues

Slide 10

925 hPa Q Vector Diagnosis : 1200 UTC 18 September 2004 Q n Q s Radar at 1200 UTC 17 September 2004 Radar at 0000 UTC 18 September 2004 Radar at 1200 UTC 18 September 2004 Highest reflectivity close most grounded QG constraining for rising WSI radar 1.0° GFS Q vectors (10 − 10 K m − 1 s − 1 starting at 2.5 × 10 − 11 ), θ (K) molded in green, and Q div – con (10 − 15 K m − 2 s − 1 ) shaded in cool–warm hues

Slide 11

Cross Section of F n Magnitude: 0000 UTC 18 September 2004 Deep frontogenesis tilting toward frosty air w/stature 925–500 hPa layer-avg F n vectors (10 − 10 K m − 1 s − 1 ), θ (K) formed in green , and F n div–con (10 − 15 K m − 2 s − 1 ) shaded in cool –warm hues F n size [K (100 km) − 1 (3 h) − 1 ] shaded in green – blue, RH shaded in orange, θ (K) formed in dim, wind points (m s − 1 ), and ω <0 ( µb s − 1 ) molded in red 1.0° GFS

Slide 12

Cross Section of F n Magnitude: 1200 UTC 18 September 2004 Deep frontogenesis tilting toward icy air w/tallness 925–500 hPa layer-avg F n vectors (10 − 10 K m − 1 s − 1 ), θ (K) molded in green , and F n div–con (10 − 15 K m − 2 s − 1 ) shaded in cool –warm hues F n extent [K (100 km) − 1 (3 h) − 1 ] shaded in green – blue, RH shaded in orange, θ (K) shaped in dark, wind thorns (m s − 1 ), and ω <0 ( µb s − 1 ) formed in red 1.0° GFS

Slide 13

NPVU QPE 0000 UTC 18 September 2004 Heaviest 6-h precip along and on chilly side of surface limit 6-h precipitation (in) closure at 0600 UTC 18 September 2004 Flow of tropical air into surface limit F n vectors (10 − 10 K m − 1 s − 1 starting at 1.0 × 10 − 10 ), θ (K) formed in green, streamlines molded in dark, and F n div – con (10 − 14 K m − 2 s − 1 ) shaded in cool–warm hues 0600 UTC 18 September 2004 ~0.6° surface information

Slide 14

NPVU QPE 0600 UTC 18 September 2004 Heaviest 6-h precip along and on icy side of surface limit 6-h precipitation (in) completion at 1200 UTC 18 September 2004 Flow of tropical air into surface limit F n vectors (10 − 10 K m − 1 s − 1 starting at 1.0 × 10 − 10 ), θ (K) molded in green, streamlines shaped in dark, and F n div – con (10 − 14 K m − 2 s − 1 ) shaded in cool–warm hues 1200 UTC 18 September 2004 ~0.6° surface information

Recommended
View more...