Investigation of the Mei-yu Front Using a New Deformation Frontogenesis Function
合集下载
- 1、下载文档前请自行甄别文档内容的完整性,平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益,请联系客服反馈,我们会尽快为您处理(人工客服工作时间:9:00-18:30)。
3 U S Nat i o na l Sc i e n c e F ou n dat i o n ,Ar l i n gt o n V A 2 2 23 0 ,US A
.
( Re c e i v e d 1 J u l y 2 0 1 4 ; r e v i s e d 7 S e p t e mb e r 2 0 1 4 ; a c c e p t e d 1 5 S e p t e mb e r 2 0 1 4 )
C h i n e s e A c a d e m y o f S c i e n c e s , B e i j i n g 1 0 0 0 2 9 S t a t e K e y L a b o r a t o r y o f S e v e r e We a t h e  ̄C h i n e s e A c a d e m y o f Me t e o r o l o g i c a l S c i e n c e s , B e i j i n g 1 0 0 0 8 1
AB S TRACT
A n e w f r o n t o g e n e s i s f u n c t i o n i s d e v e l o p e d a n d a n a l y z e d o n t h e b a s i s o f a l o c a l c h a n g e r a t e o f t h e a b s o l u t e h o r i z o n t a 1
ADVANCES I N ATM OS PHERI C S CI ENCES , VOL. 3 2 , M AY 2 01 5 , 6 3 5 — 6 47
Biblioteka Baidu
I n v e s t i g a t i o n o f t h e Me i - y u Fr o n t Us i n g a Ne w De f o r ma t i o n
Fr 0 nt 0 g e ne s i s Func t i o n
YAN G Sh u a i . GAO S h o u t i n g 1 - 一a n d Ch u n g u LU3
.
L a b o r a t o r y C “ P c f f f D P h y s i c s a n d S e v e r e S t o r ms , I n s t i t u t e o f A t mo s p h e r i c P h y s i c s ,
gr a d i e n t o f t he r e s ul t a n t de f o r ma t i on.Di f f e r e n t rom f t h e t r a d i t i o na l f r o nt og e ne s i s f u nc t i o n.t he n e wl y d ef i ne d d ef or ma t i o n f r on t o ge n e s i s i s d e r i ve d f r o m t h e v i e wpo i nt of d yn a mi cs r a t he r t ha n t he r mo d yn a mi c s . Thus .i t i s m or e i n t u i t i v e f or t he s t ud y of f r on t o ge n e s i s be c a u s e t h e co m pa c t i on of i s o l i ne s o f b o t h t empe r a t ur e a nd mo i s t u r e ca n b e di r e c t l y i n d uc e d b y t h e c ha n ge of a lo f w ie f l d . Thi s n e w f r o nt og e ne s i s f u n c t i o n i s p a r t i c ul a r l y us e f ul f 0 r s t ud y i n g t he me i — v u f r o n t i n C: hi na be c a u s e me i — yu r a i n ba n ds t y pi c a l l y c o ns i s t of a mu c h s t r o ng e r m oi s t u r e gr a d i e n t t h a n t e mp e r a t u r e g r a d i e nt , a n d i n vo l v e l rge a d ef or ma t i o n low. An f a n a l y s i s o f r e a 1 me i — v u f r o n t a l r a i nf a l 1 e v e n t s i n di c a t es t h a t t h e d e f o r ma t i on f r ont o ge n e s i s f u nc t i o n wor k s r e ma r k a bl y we l 1 . p r od u c i n g a c l ea r e r me i — v u f r o nt t h a n t he t r a di t i o na l f r on t o g en e s i s f un c t i on ba s e d o n a me a s u r e of t he po t e nt i a l t e m pe r a t ur e g r a di e nt .M o r e i m po r t a n t l y , t h e d e f o r ma t i on f r o n t o ge n e s i s s ho ws c l o s e c o r r e l a t i o n wi t h t he s ub s e qu e nt
.
( Re c e i v e d 1 J u l y 2 0 1 4 ; r e v i s e d 7 S e p t e mb e r 2 0 1 4 ; a c c e p t e d 1 5 S e p t e mb e r 2 0 1 4 )
C h i n e s e A c a d e m y o f S c i e n c e s , B e i j i n g 1 0 0 0 2 9 S t a t e K e y L a b o r a t o r y o f S e v e r e We a t h e  ̄C h i n e s e A c a d e m y o f Me t e o r o l o g i c a l S c i e n c e s , B e i j i n g 1 0 0 0 8 1
AB S TRACT
A n e w f r o n t o g e n e s i s f u n c t i o n i s d e v e l o p e d a n d a n a l y z e d o n t h e b a s i s o f a l o c a l c h a n g e r a t e o f t h e a b s o l u t e h o r i z o n t a 1
ADVANCES I N ATM OS PHERI C S CI ENCES , VOL. 3 2 , M AY 2 01 5 , 6 3 5 — 6 47
Biblioteka Baidu
I n v e s t i g a t i o n o f t h e Me i - y u Fr o n t Us i n g a Ne w De f o r ma t i o n
Fr 0 nt 0 g e ne s i s Func t i o n
YAN G Sh u a i . GAO S h o u t i n g 1 - 一a n d Ch u n g u LU3
.
L a b o r a t o r y C “ P c f f f D P h y s i c s a n d S e v e r e S t o r ms , I n s t i t u t e o f A t mo s p h e r i c P h y s i c s ,
gr a d i e n t o f t he r e s ul t a n t de f o r ma t i on.Di f f e r e n t rom f t h e t r a d i t i o na l f r o nt og e ne s i s f u nc t i o n.t he n e wl y d ef i ne d d ef or ma t i o n f r on t o ge n e s i s i s d e r i ve d f r o m t h e v i e wpo i nt of d yn a mi cs r a t he r t ha n t he r mo d yn a mi c s . Thus .i t i s m or e i n t u i t i v e f or t he s t ud y of f r on t o ge n e s i s be c a u s e t h e co m pa c t i on of i s o l i ne s o f b o t h t empe r a t ur e a nd mo i s t u r e ca n b e di r e c t l y i n d uc e d b y t h e c ha n ge of a lo f w ie f l d . Thi s n e w f r o nt og e ne s i s f u n c t i o n i s p a r t i c ul a r l y us e f ul f 0 r s t ud y i n g t he me i — v u f r o n t i n C: hi na be c a u s e me i — yu r a i n ba n ds t y pi c a l l y c o ns i s t of a mu c h s t r o ng e r m oi s t u r e gr a d i e n t t h a n t e mp e r a t u r e g r a d i e nt , a n d i n vo l v e l rge a d ef or ma t i o n low. An f a n a l y s i s o f r e a 1 me i — v u f r o n t a l r a i nf a l 1 e v e n t s i n di c a t es t h a t t h e d e f o r ma t i on f r ont o ge n e s i s f u nc t i o n wor k s r e ma r k a bl y we l 1 . p r od u c i n g a c l ea r e r me i — v u f r o nt t h a n t he t r a di t i o na l f r on t o g en e s i s f un c t i on ba s e d o n a me a s u r e of t he po t e nt i a l t e m pe r a t ur e g r a di e nt .M o r e i m po r t a n t l y , t h e d e f o r ma t i on f r o n t o ge n e s i s s ho ws c l o s e c o r r e l a t i o n wi t h t he s ub s e qu e nt