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Hi Andrew,<br>
<br>
Actually, if you can redefine the longitudes in your control file
from (-180:180) to (0:360)<br>
that would solve the dateline issue. In this case you could have
aave(sstanom,lon=160,lon=210....<br>
to resolve to 160E to 150W. <br>
<br>
In order to go beyond 360 (e.g., lon=340,lon=390), your data set has
to be continuous in<br>
the sense that 361 (or whatever) is a legitimate extension. For
example, if you start at 0<br>
and go to 359 increment by 1, the next point would be 360 (0), then
361 (1), etc. To check<br>
you can try make a global plot of some variable, and set the
longitude range from 0 to 720;<br>
in this case you should either see a twice-global plot.<br>
<br>
Jim<br>
<br>
<div class="moz-cite-prefix">On 9/24/15 12:24 AM, Andrew Friedman
wrote:<br>
</div>
<blockquote
cite="mid:CAHmzcBiX1zU3K7w-RHqPFfmb4CzRYGyM6F+2ogvTBj=8QXkkQg@mail.gmail.com"
type="cite">
<div dir="ltr">
<div>
<div>
<div>Thank you for these clarifications, Jim.<br>
<br>
</div>
<div>To follow up:<br>
</div>
<div>To use your suggested option (2), "define nino4 =
aave(sstanom,lon=340,lon=390,lat=-5,lat=5)"<br>
<br>
</div>
<div>Would I first need to redefine the longitude values<br>
</div>
</div>
'set lon 0 360' ?<br>
<br>
</div>
<div>Best,<br>
</div>
Andrew</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Thu, Sep 24, 2015 at 4:45 AM, James
T. Potemra <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:jimp@hawaii.edu" target="_blank">jimp@hawaii.edu</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000"> Hi Abdus/Andrew,<br>
<br>
I'd be cautious of your nino4 as defined. I presume your
data are defined -180 to 180, where eastern longitudes are
0 to 180 and western longitudes are -180 to 0. In your
line:<br>
<br>
"define nino4=aave(sstanom,lon=-150,lon=160,lat=-5,lat=5)”<br>
<br>
the longitudes are in fact ascending (-150 is less than
160), however I believe this will create a mean from 150W
eastward all the way around to 160E (again, assuming your
longitudes are defined -180 to 180), a mean over 310
longitudes. Instead you want 160E to 150E, or a mean over
50 longitudes. I further think Andrew's suggestion<br>
<br>
"define nino4=aave(sstanom,lon=160,lon=-150,lat=-5,lat=5)”<br>
<br>
will give an operation error (min lon > max lon).<br>
<br>
Instead you could try either:<br>
<br>
1. define two different boxes across the dateline:<br>
define nino4a = aave(sstanom,lon=160,lon=180,lat=-5,lat=5)<br>
define nino4b =
aave(sstanom,lon=-180,lon=-150,lat=-5,lat=5)<br>
define nino4 = ( 20 * nino4a + 30 * nino4b ) / 50.0<br>
<br>
2. if the file is global and continuous, you might be
able to use<br>
define nino4 = aave(sstanom,lon=340,lon=390,lat=-5,lat=5)<br>
<br>
Jim
<div>
<div class="h5"><br>
<br>
<div>On 9/22/15 4:41 PM, MD ABDUS SATTAR wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">Hi Andrew
<div>Thanks!</div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Wed, Sep 23, 2015 at
5:58 AM, Andrew Friedman <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:andfried@gmail.com"
target="_blank"><a class="moz-txt-link-abbreviated" href="mailto:andfried@gmail.com">andfried@gmail.com</a></a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0
0 0 .8ex;border-left:1px #ccc
solid;padding-left:1ex">Hi Abdus,<br>
<br>
I think that you are setting up the anomalies
correctly. However, you may have a problem
with your NINO4 domain:<br>
> "define
nino4=aave(sstanom,lon=-150,lon=160,lat=-5,lat=5)”<br>
<br>
<a moz-do-not-send="true"
href="https://climatedataguide.ucar.edu/climate-data/nino-sst-indices"
rel="noreferrer" target="_blank">https://climatedataguide.ucar.edu/climate-data/nino-sst-indices</a><br>
<br>
In GrADS, longitudes need to be ascending.<br>
<br>
I think that you want to reverse your
longitudes so you have<br>
<br>
"define
nino4=aave(sstanom,lon=160,lon=-150,lat=-5,lat=5)”
OR "define
nino4=aave(sstanom,lon=160,lon=210,lat=-5,lat=5)”<br>
<br>
Best, Andrew<br>
<span><br>
> On Sep 22, 2015, at 7:57 AM, MD ABDUS
SATTAR <<a moz-do-not-send="true"
href="mailto:md-abdus.sattar@students.mq.edu.au"
target="_blank">md-abdus.sattar@students.mq.edu.au</a>>
wrote:<br>
><br>
> Dear Andrew<br>
> Thank you very much for your previous
suggestion. Now, I can prepare El Nino
series as well as temporal correlation.
However, I am not confident enough whether I
am right or wrong. I use the following
script for correlating El Nino 4 index with
sea level pressure (Jan 1979 to Dec2014).
Please confirm me the following command.<br>
> "reinit"<br>
> "sdfopen \Temp\<a
moz-do-not-send="true"
href="http://sst7914.mnmean.v4.nc"
rel="noreferrer" target="_blank">sst7914.mnmean.v4.nc</a>"<br>
> "set t 1 12"<br>
> "define avesst=ave(sst1,t+0,t=432,12)"<br>
> "modify avesst seasonal"<br>
> "set t 1 432"<br>
> "define sstanom=sst1-avesst"<br>
><br>
> "define
nino4=aave(sstanom,lon=-150,lon=160,lat=-5,lat=5)"<br>
><br>
> "sdfopen
\Users\mq43879691\documents\test2\<a
moz-do-not-send="true"
href="http://mslp.mon.mean.nc"
rel="noreferrer" target="_blank">mslp.mon.mean.nc</a>"<br>
> "set lon 0 360"<br>
> "set lat -90 90"<br>
> "set t 1"<br>
> "d tcorr(nino4,mslp.2,t=1,t=432)"<br>
><br>
> Output:<br>
</span>> <image.png><br>
<div>
<div>><br>
> How can perform lead or lag
correlation?<br>
><br>
> Best regards<br>
> Abdus<br>
><br>
> On Tue, Sep 15, 2015 at 6:48 AM,
Andrew Friedman <<a
moz-do-not-send="true"
href="mailto:andfried@gmail.com"
target="_blank"><a class="moz-txt-link-abbreviated" href="mailto:andfried@gmail.com">andfried@gmail.com</a></a>>
wrote:<br>
> Hi Abdus,<br>
><br>
> Your timeseries is static because
your boundaries for ssta do not have a
time-varying dimension.<br>
><br>
> There are different commands,
depending on what you’re trying to do.<br>
><br>
> Are you trying to create a monthly
ssta climatology? If so, check out the
instructions for the command ‘modify’: <a
moz-do-not-send="true"
href="http://www.iges.org/grads/gadoc/gradcomdmodify.html"
rel="noreferrer" target="_blank"><a class="moz-txt-link-freetext" href="http://www.iges.org/grads/gadoc/gradcomdmodify.html">http://www.iges.org/grads/gadoc/gradcomdmodify.html</a></a><br>
><br>
> Or are you trying to create a running
mean timeseries of ssta? In that case, try
something like ssta=ave(sst,t-11,t+0).<br>
><br>
> Best,<br>
> Andrew<br>
><br>
><br>
> On Sep 13, 2015, at 8:01 AM, MD ABDUS
SATTAR <<a moz-do-not-send="true"
href="mailto:md-abdus.sattar@students.mq.edu.au"
target="_blank">md-abdus.sattar@students.mq.edu.au</a>>
wrote:<br>
><br>
> > Hi Andrew<br>
> > I was trying to set tloop, but
still facing difficulties. I prepared the
script as:<br>
> > "reinit"<br>
> > "sdfopen
\Users\mq43879691\documents\test2\<a
moz-do-not-send="true"
href="http://sst.mnmean.v4.nc"
rel="noreferrer" target="_blank">sst.mnmean.v4.nc</a>"<br>
> > "set t 1 1937"<br>
> > "define
ssta=ave(sst,t=1501,t=1933,12)"<br>
> ><br>
> > "set lat 25"<br>
> > "set lon 50"<br>
> > "set lev 0"<br>
> > "set t 1501 1933"<br>
> ><br>
> ><br>
> > "d
tloop(aave(ssta,lon=100,lon=170,lat=-5,lat=5))"<br>
> ><br>
> > "d
tloop(aave(sst,lon=100,lon=170,lat=-5,lat=5))"<br>
> ><br>
> > I can display time series of El
Nino by using sst value ("d
tloop(aave(sst,lon=100,lon=170,lat=-5,lat=5))").
However, I would like use to ssta ("d
tloop(aave(ssta,lon=100,lon=170,lat=-5,lat=5))")
and when I use this the following map is
found. Could you please suggest me in this
regards?<br>
> ><br>
> ><br>
> ><br>
> > <image.png><br>
> ><br>
> ><br>
> > Thanking you<br>
> ><br>
> > Abdus<br>
> ><br>
> ><br>
> ><br>
> > On Fri, Sep 11, 2015 at 4:18 PM,
Andrew Friedman <<a
moz-do-not-send="true"
href="mailto:andfried@gmail.com"
target="_blank"><a class="moz-txt-link-abbreviated" href="mailto:andfried@gmail.com">andfried@gmail.com</a></a>>
wrote:<br>
> > Hi Abdus,<br>
> > You may need to use ‘tloop’ with
aave: <a moz-do-not-send="true"
href="http://www.iges.org/grads/gadoc/gradfunctloop.html"
target="_blank">http://www.iges.org/grads/gadoc/gradfunctloop.html</a><br>
> > Andrew<br>
> ><br>
> > On Sep 11, 2015, at 7:05 AM, MD
ABDUS SATTAR <<a moz-do-not-send="true"
href="mailto:md-abdus.sattar@students.mq.edu.au" target="_blank">md-abdus.sattar@students.mq.edu.au</a>>
wrote:<br>
> ><br>
> > > Dear GrADS Team<br>
> > > I am trying to calculate
time series of El Nino SST anomaly in
January for a specific time period.<br>
> > ><br>
> > > I wrote my script as:<br>
> > ><br>
> > > "reinit"<br>
> > > "sdfopen
\Users\mq43879691\documents\test2\<a
moz-do-not-send="true"
href="http://sst.mnmean.v4.nc"
rel="noreferrer" target="_blank">sst.mnmean.v4.nc</a>"<br>
> > > "set lon 100"<br>
> > > "set lat 25"<br>
> > > "set z 1"<br>
> > > "set t 1 600"<br>
> > ><br>
> > > "define
ssta=ave(sst,t=1,t=600,12)"<br>
> > ><br>
> > > "define elnino =
aave(ssta,lon=100,lon=170,lat=-5,lat=5)"<br>
> > ><br>
> > > "d elnino"<br>
> > ><br>
> > > The GrADS did not know show
anything by this script. On the other
hand, when I display only ssta setting lon
50 100 and lat 0 25; then it shows the
ssta. Can anybody help me in this regards?<br>
> > ><br>
> > > I look forward to your
suggestion.<br>
> > ><br>
> > > Regards<br>
> > > Abdus<br>
> > > --<br>
> > > Md. Abdus Sattar<br>
> > > PhD Student<br>
> > > Department of Environmental
Sciences<br>
> > > Level 2, Australian Hearing
Hub Building<br>
> > ><br>
> > > Faculty of Science and
Engineering<br>
> > > Macquarie University<br>
> > > NSW 2109 Australia<br>
> > ><br>
> > ><br>
> > > Cell: <a
moz-do-not-send="true"
href="tel:%2B61404400401"
value="+61404400401" target="_blank">+61404400401</a><br>
> > > Email: <a
moz-do-not-send="true"
href="mailto:md-abdus.sattar@students.mq.edu.au"
target="_blank"><a class="moz-txt-link-abbreviated" href="mailto:md-abdus.sattar@students.mq.edu.au">md-abdus.sattar@students.mq.edu.au</a></a><br>
> > ><br>
> > > AND<br>
> > ><br>
> > > Assistant Professor<br>
> > > Department of Disaster Risk
Management (DRM)<br>
> > > Faculty of Disaster
Management<br>
> > > Patuakhali Science and
Technology University, Dumki, Patuakhali,
Bangladesh<br>
> > ><br>
> > > Cell: <a
moz-do-not-send="true"
href="tel:%2B8801716851612"
value="+8801716851612" target="_blank">+8801716851612</a><br>
> > > Email: <a
moz-do-not-send="true"
href="mailto:abdus.sattar@pstu.ac.bd"
target="_blank"><a class="moz-txt-link-abbreviated" href="mailto:abdus.sattar@pstu.ac.bd">abdus.sattar@pstu.ac.bd</a></a><br>
> > >
_______________________________________________<br>
> > > gradsusr mailing list<br>
> > > <a moz-do-not-send="true"
href="mailto:gradsusr@gradsusr.org"
target="_blank">gradsusr@gradsusr.org</a><br>
> > > <a moz-do-not-send="true"
href="http://gradsusr.org/mailman/listinfo/gradsusr" rel="noreferrer"
target="_blank">http://gradsusr.org/mailman/listinfo/gradsusr</a><br>
> ><br>
> ><br>
> >
_______________________________________________<br>
> > gradsusr mailing list<br>
> > <a moz-do-not-send="true"
href="mailto:gradsusr@gradsusr.org"
target="_blank">gradsusr@gradsusr.org</a><br>
> > <a moz-do-not-send="true"
href="http://gradsusr.org/mailman/listinfo/gradsusr"
rel="noreferrer" target="_blank">http://gradsusr.org/mailman/listinfo/gradsusr</a><br>
> ><br>
> ><br>
> ><br>
> > --<br>
> > Md. Abdus Sattar<br>
> > PhD Student<br>
> > Department of Environmental
Sciences<br>
> > Level 2, Australian Hearing Hub
Building<br>
> ><br>
> > Faculty of Science and
Engineering<br>
> > Macquarie University<br>
> > NSW 2109 Australia<br>
> ><br>
> ><br>
> > Cell: <a moz-do-not-send="true"
href="tel:%2B61404400401"
value="+61404400401" target="_blank">+61404400401</a><br>
> > Email: <a
moz-do-not-send="true"
href="mailto:md-abdus.sattar@students.mq.edu.au"
target="_blank"><a class="moz-txt-link-abbreviated" href="mailto:md-abdus.sattar@students.mq.edu.au">md-abdus.sattar@students.mq.edu.au</a></a><br>
> ><br>
> > AND<br>
> ><br>
> > Assistant Professor<br>
> > Department of Disaster Risk
Management (DRM)<br>
> > Faculty of Disaster Management<br>
> > Patuakhali Science and
Technology University, Dumki, Patuakhali,
Bangladesh<br>
> ><br>
> > Cell: <a moz-do-not-send="true"
href="tel:%2B8801716851612"
value="+8801716851612" target="_blank">+8801716851612</a><br>
> > Email: <a
moz-do-not-send="true"
href="mailto:abdus.sattar@pstu.ac.bd"
target="_blank"><a class="moz-txt-link-abbreviated" href="mailto:abdus.sattar@pstu.ac.bd">abdus.sattar@pstu.ac.bd</a></a><br>
> >
_______________________________________________<br>
> > gradsusr mailing list<br>
> > <a moz-do-not-send="true"
href="mailto:gradsusr@gradsusr.org"
target="_blank">gradsusr@gradsusr.org</a><br>
> > <a moz-do-not-send="true"
href="http://gradsusr.org/mailman/listinfo/gradsusr"
rel="noreferrer" target="_blank">http://gradsusr.org/mailman/listinfo/gradsusr</a><br>
><br>
><br>
>
_______________________________________________<br>
> gradsusr mailing list<br>
> <a moz-do-not-send="true"
href="mailto:gradsusr@gradsusr.org"
target="_blank">gradsusr@gradsusr.org</a><br>
> <a moz-do-not-send="true"
href="http://gradsusr.org/mailman/listinfo/gradsusr"
rel="noreferrer" target="_blank">http://gradsusr.org/mailman/listinfo/gradsusr</a><br>
><br>
><br>
><br>
> --<br>
> Md. Abdus Sattar<br>
> PhD Student<br>
> Department of Environmental Sciences<br>
> Level 2, Australian Hearing Hub
Building<br>
><br>
> Faculty of Science and Engineering<br>
> Macquarie University<br>
> NSW 2109 Australia<br>
><br>
><br>
> Cell: <a moz-do-not-send="true"
href="tel:%2B61404400401"
value="+61404400401" target="_blank">+61404400401</a><br>
> Email: <a moz-do-not-send="true"
href="mailto:md-abdus.sattar@students.mq.edu.au"
target="_blank">md-abdus.sattar@students.mq.edu.au</a><br>
><br>
> AND<br>
><br>
> Assistant Professor<br>
> Department of Disaster Risk
Management (DRM)<br>
> Faculty of Disaster Management<br>
> Patuakhali Science and Technology
University, Dumki, Patuakhali, Bangladesh<br>
><br>
> Cell: <a moz-do-not-send="true"
href="tel:%2B8801716851612"
value="+8801716851612" target="_blank">+8801716851612</a><br>
> Email: <a moz-do-not-send="true"
href="mailto:abdus.sattar@pstu.ac.bd"
target="_blank">abdus.sattar@pstu.ac.bd</a><br>
>
_______________________________________________<br>
> gradsusr mailing list<br>
> <a moz-do-not-send="true"
href="mailto:gradsusr@gradsusr.org"
target="_blank">gradsusr@gradsusr.org</a><br>
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href="http://gradsusr.org/mailman/listinfo/gradsusr"
rel="noreferrer" target="_blank">http://gradsusr.org/mailman/listinfo/gradsusr</a><br>
<br>
<br>
_______________________________________________<br>
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</div>
</blockquote>
</div>
<br>
<br clear="all">
<div><br>
</div>
-- <br>
<div>
<div dir="ltr">
<div>
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">Md. Abdus Sattar
<div>PhD Student</div>
<div>Department of Environmental
Sciences</div>
<div><span
style="font-family:arial,helvetica,sans-serif;font-size:12px;line-height:15px">Level
2, Australian Hearing Hub
Building</span><br
style="font-size:12.8000001907349px">
<span
style="font-size:12.8000001907349px"><br>
</span></div>
<div><span
style="font-size:12.8000001907349px">Faculty
of Science and Engineering<br>
Macquarie University<br>
</span><span
style="font-size:12.8000001907349px">NSW
2109 Australia</span><br>
</div>
<div><br>
</div>
<div><br>
</div>
<div>Cell: <a
moz-do-not-send="true"
href="tel:%2B61404400401"
value="+61404400401"
target="_blank">+61404400401</a></div>
<div>Email: <a
moz-do-not-send="true"
href="mailto:md-abdus.sattar@students.mq.edu.au"
target="_blank"><a class="moz-txt-link-abbreviated" href="mailto:md-abdus.sattar@students.mq.edu.au">md-abdus.sattar@students.mq.edu.au</a></a></div>
<div><br>
</div>
<div><b>AND</b></div>
<div><br>
</div>
<div>
<div
style="font-size:12.8000001907349px">Assistant
Professor</div>
<div
style="font-size:12.8000001907349px">Department
of Disaster Risk Management
(DRM)</div>
</div>
<div><span
style="background-color:rgb(243,243,243)">Faculty
of Disaster Management</span></div>
<div>Patuakhali Science and
Technology University, Dumki,
Patuakhali, Bangladesh</div>
<div><br>
</div>
<div>Cell: <a
moz-do-not-send="true"
href="tel:%2B8801716851612"
value="+8801716851612"
target="_blank">+8801716851612</a></div>
<div>Email: <a
moz-do-not-send="true"
href="mailto:abdus.sattar@pstu.ac.bd"
target="_blank"><a class="moz-txt-link-abbreviated" href="mailto:abdus.sattar@pstu.ac.bd">abdus.sattar@pstu.ac.bd</a></a></div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
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<pre wrap="">_______________________________________________
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<a class="moz-txt-link-abbreviated" href="mailto:gradsusr@gradsusr.org">gradsusr@gradsusr.org</a>
<a class="moz-txt-link-freetext" href="http://gradsusr.org/mailman/listinfo/gradsusr">http://gradsusr.org/mailman/listinfo/gradsusr</a>
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