A comparative analysis of the horizontal resolution impacts in - - PowerPoint PPT Presentation

▶
a comparative analysis of the horizontal resolution
SMART_READER_LITE
LIVE PREVIEW

A comparative analysis of the horizontal resolution impacts in - - PowerPoint PPT Presentation

Nov 16, 2023 125 likes •363 views

A comparative analysis of the horizontal resolution impacts in simulated climate over South America Rosmeri Porfrio da Rocha Departamento de Cincias Atmosfricas, USP, Brazil rosmerir@model.iag.usp.br Michelle Simes Reboita UNIFEI

slide-1
SLIDE 1

A comparative analysis of the horizontal resolution impacts in simulated climate over South America

Rosmeri Porfírio da Rocha Departamento de Ciências Atmosféricas, USP, Brazil rosmerir@model.iag.usp.br Michelle Simões Reboita – UNIFEI – Brazil Marta Llopart – UNESP - Brazil

slide-2
SLIDE 2

Motivation

!"#$%"&'"()%*+&)#,+"-&-*.,(+-&/%0+&-/#12&*/%*&*/+&.-+&#3&42+&/#5(6#2*%"&5+-#".7#2&)%8& ()95#0+& */+& -()."%7#2& #3& */+& "#'%7#2& %2,& (2*+2-(*8& #3& '"()%*#"#:('%"& -8-*+)-;& 3#5& +<%)9"+;&.99+5&"+0+"-&=+*-&>?.&+*&%"@;&ABCDE&#5&*/+&:"#$%"&/8,5#"#:('%"&'8'"+&>F+)#58&+*&%"@;& ABCGEH&

&

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

slide-3
SLIDE 3

Objectives

R !"# $%&'(&)$# )*$# +,-&.)# "/# (0+12# 31$# *"4+5"1)&'# 24+6# 0-&.+12# +1# 7$289:# )"# 0+,('&)$#)*$#.'+,&)$#"%$4#;"()*#<,$4+.&#=;<>?## && & & Y/+& /#5(6#2*%"& 5+-#".7#2& '#2*5#"-& #2& MI& '"()%*+& 1(""& $+& ,(-'.--+,& '#2-(,+5(2:Z& & & N+:OPG& -()."%7#2-& .-(2:& AD& %2,& DB& T)& :5(,& -9%'(2:& %2,& 3#.5& '#20+'70+& 9%5%)+*+5(6%7#2-&!&()9%'*-&#2&-()."%*+,&'"()%*+&3#5&ABBD&8+%5&%2,&/(:/&35+[.+2'8& 0%5(%$("(*8@& &

&&

slide-4
SLIDE 4

RegCM4 simulations using 25 and 50 km grid spacing and four convective parameterizations

M()."%7#2-&1+5+&'%55(+,&#.*&.-(2:&7$289:&>N+:(#2%"&O"()%*+& P#,+"&R&0+5-(#2&G@G@DE&#0+5&*/+&6",&+1#."%$4+12#;"()*#<,$4+.&& %2,&%,=%'+2*&#'+%2-&>OLNF\]&-.$,#)%(2E&

@1$#6",&+1#A+)*#)A"# 6+B$4$1)#24+6#0-&.+12C# DE#&16#FD#G,#

F#)%(2&%2,&*#9#:5%9/8&#3&!DB&%2,&!AD&-()."%7#2-@&

IP^& ?VW&

slide-5
SLIDE 5

Data and Methodology

@H0$4%$6#6&)&# 7&+1/&''C# I&+'J#,$&1#%&'($0#/4",C# K#8'+,&)$#L4$6+.M"1#8$1)$4##=8L8>#N#4&+1/&''#6&)&#="1'J# 4&+1#2&(2$#&1&'J0+0#A+)*#24+6#"/#E?D">O## K#P'"H&'#;&)$''+)$#9&--+12#"/#L4$.+-+)&M"1##=P;9&L>C# 6$4+%$6#/4",#0&)$''+)$#=24+6#"/#E?Q">#O# <+4#)$,-$4&)(4$C# 87R#N#E?D#S#E?D#&1&'J0+0## T4&U1)$4+,#=I$$#$)#&'?#FEQQ>#!#+)#*&0#&00+,+'&)$6#F#,# &+4#)$,-$4&)(4$#&16#*(,+6+)J##

;+,('&M"10#6$0+21C## V"4+5"1)&'#24+6#0-&.+12#C#DE#=PDE>#&16#FD#=PFD>#G,# W(,H$4#"/#0+2,&#'$%$'0#_&AS# !"-"24&-*J#&16#'&16K(0$C#`M!M&%2,&!?O&>?#0+"%2,&+*& %"@&ABBBE& U1+M&'#&16#H"(16&4J#."16+M"10#X#;;!C##\5%Ra2*+5()& L$4+"6Z&&ABBD&8+%5&>35#)&BBZBB&`YO&&BCK&F+'KABBG&.27"& BCKb%2KABBcE& & L*J0+.&'#-&4&,$)4+5&M"10C## ;(4/&.$#0.*$,$C#WIYM& Y"(4#."1%$.M%$#-&4&,$)4+5&M"10C#&& &\)%2.+"&>\)%E;& & &!5+""RX5(*-'/&O/%99+""&>!3'E;&& &!5+""RI5%T%1%&M'/.$+5*&>!%-E& & &d%(2RX5(*-'/&>dXE@&

slide-6
SLIDE 6

G50 simulations and observations of mean annual rainfall for 2005

?%5:+&%:5++)+2*&$+*1++2&#$-+50+,&%2,&-()."%*+,&5%(23%""Z&T,&1($'#&16#ZY# # P&0Z&-()."%*+,&-9%7%"&9%Q+52&#3&5%(23%""&,#+-&2#*&5+-+)$"+-&*/+&#$-+50+,&#2+& & P/.Z&%&-)%""&()95#0+)+2*&'#)9%5+,&1(*/&!%-&(2&*/+&5+95#,.'7#2&#3&#$-+50+,&9%Q+52&#3&5%(23%""&

P;9&L# 8L8# T,&1($'#DE#G,# PY8#DE#G,# P<;#DE#G,# ZY#DE#G,#

slide-7
SLIDE 7

! O#))#2&%""&9%5%)+*+5(6%7#2-Z&,58&$(%-&#0+5&0"()*#[4&5+'#&16#R4(2(&J&>1/('/&(-&9%5*&#3&?%&V"%*%&W%-(2&R&?VW&E& (2&!DB&&!&\)%2.+";&!3'&%2,&!%-&-'/+)+-Z&,58&$(%-&,+'5+%-+-&,5%-7'%""8&(2&*/+&!ADH&*/(-&(-&2#*&2#*+,&(2&dX&& ! <,&5"1#H&0+1Z&&\)%2.+"&%*&!DB&/%-&%&"%5:+&1+*&$(%-;&1/('/&,+'5+%-+-&%*&!AD@&& &!3';&!%-&%2,&dX&/%0+&,58&$(%-&(2&!DB&*/%*&,+'5+%-+-&(2&!AD@&&

&

PDE#

Annual (2005 year) rainfall bias: Simulations x CPC

T,&1($'# PY8# P<;# ZY# T,&1($'# PY8# P<;# ZY#

PFD#

slide-8
SLIDE 8

Annual (2005 year) rainfall bias: Simulations x GSMaP

! M()."%7#2-&<&!-P%VZ&M9%7%"&9%Q+52-&#3&5%(23%""&$(%-+-&%5+&-()("%5&*/%*&#3&M()."%7#2-&<&OVO@& F(J+5+2'+-&(2&(2*+2-(*8Z&&,58&$(%-&%5+&"%5:+&#0+5&?VW&(2&*/+&'#)9%5(-#2-&M()."%7#2-&]&!MP%V@& & ! N%(23%""&$(%-+-&/%0+&*/+&-%)+&-(:2%"&(2&!AD;&$.*&(2&)#,."+&*/+8&%5+&-)%""+5&(2&!AD@&&

PFD# PDE#

T,&1($'# PY8# P<;# ZY# T,&1($'# PY8# P<;# ZY#

slide-9
SLIDE 9

Impact of resolution: difference of annual rainfall between 25 and 50 km (G25 minus g50)

T,&1($'## %&2#5*/R-#.*/&,(9#"%5& 5+-9#2-+&%-&3.2'7#2&#3&:5(,&

  • (6+Z&5+,.'+-&*/+&5%(23%""&5%*+&

(2&*/+&*5#9('%"&>()9"8(2:&(2&

  • )%""&1+*&$(%-E&%2,&(2'5+%-+&&

#3&5%(23%""&#0+5&-.$*5#9('-R +<*5%*5#9('-&>(2'".,(2:&(2&?VW& 1(*/&%&,+'5+%-+&#3&*/+&,58& $(%-E&

P/.#&16#P&0#!&-()."%*+&%& :+2+5%"&(2'5+%-+&#3&*/+&5%(23%""& 5%*+&(2&*/+&/(:/+5&5+-#".7#2&

  • ()."%7#2-&>AD&T)E&&

ZY&!&/%-&%& $+/%0(#5&-()("%5&*#& \)%2.+";&$.*&&1(*/&

  • )%""&,(J+5+2'+-&(2&

(2*+2-(*8&$+*1++2& !DB&%2,&!AD&

T,&1($'# PY8# P<;# ZY#

slide-10
SLIDE 10

Annual (2005 year) air temperature bias: Simulations x mean of

  • bservations (EraInterim and CRU)

T,&1($'Z&!AD&,+'5+%-+-& */+&*+)9+5%*.5+&$(%-&(2&%""& ,#)%(2& P/.C#'#",&$(%-&'#0+5-&)#-*&#3& M#.*/&I)+5('%&(2&!DBH&(*&(-& %''+2*.%*+,&(2&!AD& P&0C#(*&(-&2#*+,&%& '/%2:+&#3&*/+& 95+,#)(2%2'+&#3& 1%5)&>!DBE&*#&'#",& $(%-&>!ADE& ZYC#1%5)&$(%-&(2&)#-*& 9%5*&#3&'#272+2*& ,+'5+%-+&(2&dXAD& T,&1($'# PY8# P<;# ZY# T,&1($'# PY8# P<;# ZY#

!DB& !AD&

slide-11
SLIDE 11

Impacts of resolution: difference of annual air temperature in 25 and 50 km (G25 minus G50)

A general behavior of the parameterizations:

  • ver continent the air temperature are lower in G25 than in G50
  • differences between G25 and G50: are larger in Gas and smaller in Emanuel

T,&1($'# PY8# P<;# ZY#

slide-12
SLIDE 12

PFD#S#PDE# T,&1($'C#N+"%70+& '#2*5($.7#2&#3&'#20+'70+&

  • '/+)+&3#5&*#*%"&5%(23%""&

,+'5+%-+&,5%-7'%""8&#0+5& )#-*&9%5*&#3&,#)%(2H& & a*&(2'5+%-+-&#0+5&V%'(4'& L'+%2&>'#20+'70+&-'/+)+& 95#,.'+-&)#5+&5%(23%""&%*& !AD&*/%2&%*&!DBE& & ZYC#'#2*5($.7#2&#3& '#20+'70+&-'/+)+&3#5&*#*%"& 5%(23%""&/%-&%&-)%""&,+'5+%-+& #0+5&MI&%2,&(*&(2'5+%-+&#0+5& V%'(4'&L'+%2&(2&!ADH& & P/.#&16#P&0#!&'#20+'70+&-'/+)+& 5+,.'+-&(*&9%57'(9%7#2&(2&*#*%"&5%(23%""&(2&

  • .$*5#9('-&(2&!AD&

& P&0&!&-()."%*+-&*/+&)#5+&'#20+'70+&5%(2& #0+5&*5#9('%"&V%'(4'&%2,&I*"%27'&L'+%2-&(2& !AD&*/%2&!DBH& &

7$'&M%$#6+B$4$1.$#\#]#=8"1%^)")>PFD#N#=8"1%^)")>PDE_#`#QEE#

U0#)*$4$#&1J#+,-&.)#"/#4$0"'(M"1#H$)A$$1#."1%$.M%$#&16#'&42$#0.&'$# 4&+1/&''#a-&4MM"1bc

!3'& !%-&

slide-13
SLIDE 13

T,&1($'#PFDC#'&42$#6$.4$&0$#"/#."1%$.M%$#4&+1/&''#."1)4+H(M"1#)"#)")&'#6(4+12#A$)# ,"1)*0## # U1#T,&1($'#)*$#.*&12$0#"/#)*$#a-&4MM"1b#"/#4&+1/&''#&4$#0)4"12$4#)*&1#+1#)*$#")*$4# 0.*$,$0#!#,"4$#0$10+M%+)J#)"#)*$#*"4+5"1)&'#24+6#4$0"'(M"1# ##

Annual cycle of the rainfall “partition” (convective/total) ! AMZ

T,&1($'# P<;# PY8# ZY# N%7#2&>'#20K*#*E&

IP^&

slide-14
SLIDE 14

!$,-#="8># <9d# PDE^PFD# eL[# PDE^PFD# WIT# PDE^PFD# \)%& Ac@G&=Ff?F># AA@A&=FQ?g>## AD@C&>AD@BE& !3'& FD?h#>AG@CE& FE?i#>AB@CE&& F:?g#>AS@eE& !%-& Af@c&=FD?g>#& FQ?Q#>AB@cE& F:?h#>AG@BE&& dX& Ag@A&=Fj?f>## AS@B&=FF?j># Ac@G&=Ff?Q># !"#$"%& !"#!$ !%#"$ !"#!$

7&+1/&''#

=,,^6&J> # <9d# PDE^PFD# eL[# PDE^PFD# WIT# PDE^PFD# \)%& f@S&=f?D># A@S&=g?g># G@f&=:?D># !3'& G@B&=:?D># A@f&=g?Q># F?:&>A@fE& !%-& A@g&=g?j># A@e&=g?Q># F?g&>A@gE& dX& D@A&>D@AE& F?EKC@e& F?fKS@B& !'!()*+%,& &#'()#*$ *#!()#!$ !#&(%#+$

Mean annual values for the subregions: AMZ, LPB and NDE

I*&5+:(#2%"&-'%"+Z&& & R 5%(23%""&-()."%*+,&$8&!AD& >5+,E&/%0+&"%5:+&%:5++)+2*& 1(*/&#$-+50+,&0%".+-&*/%2& !DB&>$".+E;&+<'+9*&(2&dX&

  • '/+)+&&

& R&I(5&*+)9+5%*.5+Z&$(%-+-&%5+& 5+"%70+"8&-)%""H& R&!AD>5+,E&#0+59+53#5)&!DB& >$".+E&(2&dX&%2,&\)%2.+"&

  • '/+)+-H&*/+&#99#-(*+&(-&

2#*+,&(2&!%-&%2,&!3'& &

slide-15
SLIDE 15

# <9d# eL[# WIT# \)%& RB@gKRB@C& hC@AKRB@e& RB@SKhB@C& !3'& hB@DKRC@f& hB@GKRB@g& hB@SKRB@G& !%-& hB@DKRA@c& hB@GKRB@g& hB@DKRB@g& dX& B@BKRB@c& RB@CKRB@S& hB@GKRB@S&

&

R ['&.GZ&5%(23%""&(2'5+%-+-&&!&)#5+&'"#.,-&!&-#"%5&5%,(%7#2& ,+'5+%-+-&>2+:%70+&'#55+"%7#2E&!&"#1+5&*+)9+5%*.5+& & R 7$6Z&,(J+5+2*&3++,$%'T-&>5%(23%""&,+'5+%-+-K*+)9+5%*.5+& ,+'5+%-+-E&

I+B$4$1.$0#H$)A$$1#PFD#&16#PDE#=PFD#,+1(0#PDE>C### 4&+1/&''^)$,-$4&)(4$##

slide-16
SLIDE 16

V+2*#/4$k($1.J#%&4+&H+'+)J#"/#4&+1/&''C#6&+'J#&16#3%$# 6&J0#4(11+12#,$&1&

slide-17
SLIDE 17

Daily rainfall: AMZ

Taylor Diagram

Standard Desviation Standard Desviation

2 4 6 2 4 6

2 4 6

!

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 0.95 0.99 Correlation

! ! ! ! ! ! ! ! !

! !

cpc ema50 ema25 gfc50 gfc25 gas50 gas25 kf50 kf25

Taylor Diagram

Standard Desviation Standard Desviation

2 4 6 2 4 6

2 4 6

!

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 0.95 0.99 Correlation

! ! ! ! ! ! ! ! !

! !

gsmap ema50 ema25 gfc50 gfc25 gas50 gas25 kf50 kf25

2 6 10 14 18 22 26 30 34 cpc gsmap ema50 ema25 gfc50 gfc25 gas50 gas25 kf50 kf25 50 100 150 200

X5+[.+2'8&,(-*5($.7#2&#3&,%("8&5%(23%""&>))K,%8E&(2&IP^@& Y%8"#5&F(%:5%)-& !+,$# ."44$'&M"1# H$)A$$1# "H0$4%&M"10# S# 0+,('&M"10Z& &B@c&R&B@g&>-()("%5&0%".+-&3#5&OVO& %2,&!-P%9EH& # ;)&16&46#6$%+&M"1Z&#2+&:5#.9&>!%-&%2,&!3'E& #3& iARG& ))K,%8& %2,& #*/+5& 1(*/& iGRc& >\)%2.+"&%2,&dXE@&Y/(-&#''.5-&(2&!DB&%2,&!ADH& & 7;9TZ&"%5:+5&3#5&\)%2.+"KdX&*/%2&3#5&!3'K!%-& OVO&<&-()."%7#2-& !MP%V&<&-()."%7#2-& a2*+2-+&+0+2*-&>%$#0+&CA&))K,%8E&%5+&-()."%*+,&#2"8&$8& \)%2.+"&%2,&dX&-'/+)+-& '& '& '& '&

0.4 0.5 0.6 C

  • r

r e l a t i

  • n

! !

cpc ema50 ema25 gfc50 gfc25 gas50 gas25 kf50 kf25

slide-18
SLIDE 18

Daily rainfall: LPB

Taylor Diagram

Standard Desviation Standard Desviation

2 4 6 8 2 4 6 8

2 4 6 ! 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 0.95 0.99 C

  • r

r e l a t i

  • n

! ! ! ! ! ! !! !

! !

cpc ema50 ema25 gfc50 gfc25 gas50 gas25 kf50 kf25

Taylor Diagram

Standard Desviation Standard Desviation

2 4 6 8 2 4 6 8

2 4 6

!

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 0.95 0.99 C

  • r

r e l a t i

  • n

! ! ! ! ! ! ! ! !

! !

gsmap ema50 ema25 gfc50 gfc25 gas50 gas25 kf50 kf25

2 6 10 14 18 22 26 30 34 cpc gsmap ema50 ema25 gfc50 gfc25 gas50 gas25 kf50 kf25 50 100 150 200 250 300

X5+[.+2'8&,(-*5($.7#2&#3&,%("8&5%(23%""&>))K,%8E&(2&?VW@& dXAD& %2,& dXDB& -()."%*+& )#5+& +0+2*-& #3& 1+%T& 95+'(9(*%7#2& %2,& "+--& #3& (2*+5)+,(%*+& 0%".+-& >GRg& ))K ,%8E& a2*+2-+&+0+2*-&>%$#0+&CA&))K,%8E&%5+&"+--&35+[.+2*&(2&

  • ()."%7#2&*/%2&(2&#$-+50%7#2-@&&

Y%8"#5&F(%:5%)-& !+,$# ."44$'&M"1# H$)A$$1# "H0$4%&M"10# S# 0+,('&M"10Z& &(-&-()("%5&(2&%""&-()."%7#2-&%2,& $+*1++2& jB@SRB@G& *#& OVO& %2,& jB@GRBc& *#& !-P%9@& ;)&16&46#6$%+&M"1Z&(-&-()("%5&*#&*/+&#$-+50+,& (2& */+& \)%2.+"& -'/+)+& >j& G& ))K,%8E& %2,&

  • )%""+5&(2&#*/+5&-'/+)+-&>jS&))K,%8E@&

OVO&<&-()."%7#2-& !-P%V&<&-()."%7#2-&

0.4 0.5 0.6 C

  • r

r e l a t i

  • n

! !

cpc ema50 ema25 gfc50 gfc25 gas50 gas25 kf50 kf25

'&

slide-19
SLIDE 19

<9d#N#A$)#=@.)"H$4#N#<-4+'>#&16#64J#=9&JK;$-)$,H$4>#0$&0"10#4$&'+0M.&''J#.&-)(4$6#HJ#&''#-&4&,$)$4+5&M"10## # T,&1($'#=24$$1>#&16#ZY#=H'($>#/%0+&-()("%5&$+/%0(#5&,.5(2:&+0+2*-&1(*/&"%5:+&5%(23%""&5%*+& Y()+&'#55+"%7#2&_&B@gc&>OVO&<&!DBE&%2,&E?iF#N#E?iE#=P;9&-#S#PFD># & P/.#&16#P&0#k&%5+&-()("%5&%2,&*/+8&/%0+&,(l'."*&*#&-()."%*+&+<*5+)+&+0+2*-&&>$#*/&!DB&%2,&!ADE& &&&&&&&&&&&&&&&&&&&&&&&&&&7)+&'#55+"%7#2&_B@gc&>OVO&%2,&!DBE&&16##E?hh#KE?iQ#=P;9&-#S#PFD>#

L$-+50%7#2&k&$"%'T&"(2+& & &!DB & & & & & &!AB&

b%2.%58 & & &&&&&b."8& & &&&&&F+'+)$+5&&&&b%2.%58&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&b."8&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&F+'+)$+5&

50 100 150 200 250 300 350 2.5 5 7.5 10 12.5 15 17.5 20 CPC Emanuel Gas Gfc KF 50 100 150 200 250 300 350 2.5 5 7.5 10 12.5 15 17.5 20 GSMaP Emanuel Gas Gfc KF

5 days running mean rainfall (mm/day): AMZ

V5+'(9(*%7#2&>))K,%8E&

slide-20
SLIDE 20

L$-+50%7#2&k&$"%'T&"(2+& & &&&&&&&&&&&!DB & & & & & &&&&&&&&&&&&&&&&&&&&!AD&

b%2.%58 &&&&&&&&&&&&&&&&&&&&&&&&&&&b."8&& &&&&&&&&&&&&&&&&&&&&&&&&&F+'+)$+5&&&&&b%2.%58&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&b."8&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&F+'+)$+5&

eL[#N#4&+1/&''#+0#,"4$#"4#'$00#A$''#6+0)4+H()$6#&'"12#)*$#J$&4#&16#)*$#-&4&,$)$4+5&M"10#.&-)(4$0#)*+0#/$&)(4$0# ########P;9&-#*&0#,"4$#+1)$10$#$%$1)0#)*&1#8L8# # T,&&!&-()."%*+-&(2*+2-+&5%(23%""&& P/.#&16#P&0#!&/%0+&-()("%5&$+/%0(#5& # ZY#!&"%5:+5&,(l'."*&*#&-()."%*+&(2*+2-+&+0+2*-& & !+,$#."44$'&M"1#+0#0,&''$4#+1#eL[#)*&1#+1#<9dC#/4",#,+1+,(,#E?:D#=ZYFD>#)"#,&S+,(,#E?Di#=P&0#&16#P/.>#

50 100 150 200 250 300 350 2 4 6 8 10 12 14 CPC Emanuel Gas Gfc KF 50 100 150 200 250 300 350 2 4 6 8 10 12 14 GSMaP Emanuel Gas Gfc KF

5 days running mean rainfall (mm/day): LPB

slide-21
SLIDE 21

Conclusions

Fine horizontal resolution helps to improve the simulated rainfall intensity and spatial pattern by:

  • Emanuel: decreasing the intensity of rainfall in most part of tropical SA and

increasing it over southeastern SA (LPB) ! biases ,+'5+%-+

  • KF: has a behavior similar to Emanuel, but with small differences of intensity (from

G25 to G250)

  • Gas and Gfc: increase rainfall intensity in most part of SA.
  • Except in Gas ! more realistic simulation of rainfall in G25 is followed by the

decrease (increase) of convective (grid scale) rainfall in most part of domain. Emanuel: stronger decrease of convective rainfall in wet periods over Amazon (!!!);

  • High frequency variability of rainfall is better reproduced by all schemes over AMZ

(correlation > 0.88 for 5 days running mean) than over LPB

<+4#)$,-$4&)(4$Z&5+:(#2%"& $(%-+-&%5+&5+"%70+"8&-)%""H& & & & &%""&-()."%7#2-&(2,('%*+&%&,+'5+%-+&#3&%(5&*+)9+5%*.5+&(2&!AD;&$.*& */(-&,#+-&2#*&()9"('%*+&(2&"%5:+&$(%-+-&>dX&!&5+,.'+-&*/+&1%5)&$(%-E&

slide-22
SLIDE 22

Next

&

  • N+-."*-&1(*/&\)%2.+"&>%2,&dXE&-'/+)+&%*&!AD&%5+&

+2'#.5%:(2:@&m+&T2#1&*/%*&O?Ph\)%2.+"&/+"9&*#&5+,.'+& */+&+<'+--(0+&5%(23%""&#3&\)%2.+"hWIYM&#0+5&*5#9('%"&MI&!& 2+1&-()."%7#2-&(2&!AD'/%2:(2:&35#)&WIYM&*#&O?PG@DH&

  • m+&2++,&*#&"##T&(2&)#5+&,+*%("-&*/+&-()."%7#2-&2+%5&*/+&

I2,+-&P#.2*%(2&>%995#95(%*+,&#$-+50+,&,%*%-+*EH&

  • Y#&*58&5+95#,.'+&*/+-+&5+-."*-&(2&*/+&2+1&N+:OPG&0+5-(#2&

>!5%6(%2#&(-&95#,.'(2:&%&2+1&#2+&2#1EH&

slide-23
SLIDE 23
  • Y/%2T&8#.n&
  • L$5(:%,%n&