[Met_help] [rt.rap.ucar.edu #81486] History for TRMM data
Minna Win via RT
met_help at ucar.edu
Mon Aug 14 11:17:09 MDT 2017
----------------------------------------------------------------
Initial Request
----------------------------------------------------------------
Dear MET help staff
I am trying to convert TRMM data in ASCII form with the R script
"trmm2nc.R". However, I cannot download the data from the links you provide
on the observations website (
http://disc.sci.gsfc.nasa.gov/precipitation/tovas)
I know I can download data from other sites (Mirador, giovanni, etc).
However, I can't find an Ascii option. Probably I'm overlooking something.
Could you please provide a link where I can download the data in the Ascii
format required by the R script ?
Thank you
Best regards,
Victor
----------------------------------------------------------------
Complete Ticket History
----------------------------------------------------------------
Subject: TRMM data
From: Minna Win
Time: Wed Aug 09 11:37:33 2017
Hello Victor,
Thank you for bringing this to our attention. It looks like NASA has
done
some reorganizing of their TRMM website. We contacted the project
scientist to determine whether this data is still available and (if
still
available) where it can be retrieved. We will keep you updated as
soon as
we have more information. Thank you for your patience and for your
interest in MET.
Regards,
Minna
---------------
Minna Win
NCAR
Research Applications Lab
Phone: 303-497-8423
Fax: 302-497-8401
On Sat, Aug 5, 2017 at 2:49 AM, Victor Almanza via RT
<met_help at ucar.edu>
wrote:
>
> Fri Aug 04 20:49:56 2017: Request 81486 was acted upon.
> Transaction: Ticket created by victor.al.vlz at gmail.com
> Queue: met_help
> Subject: TRMM data
> Owner: Nobody
> Requestors: victor.al.vlz at gmail.com
> Status: new
> Ticket <URL:
https://rt.rap.ucar.edu/rt/Ticket/Display.html?id=81486 >
>
>
> Dear MET help staff
>
> I am trying to convert TRMM data in ASCII form with the R script
> "trmm2nc.R". However, I cannot download the data from the links you
provide
> on the observations website (
> http://disc.sci.gsfc.nasa.gov/precipitation/tovas)
>
> I know I can download data from other sites (Mirador, giovanni,
etc).
> However, I can't find an Ascii option. Probably I'm overlooking
something.
>
> Could you please provide a link where I can download the data in the
Ascii
> format required by the R script ?
>
> Thank you
>
> Best regards,
>
> Victor
>
>
------------------------------------------------
Subject: TRMM data
From: John Halley Gotway
Time: Wed Aug 09 12:08:50 2017
Hi Victor,
I see that you're trying to access TRMM data. Yes, I believe that
NASA has
updated the method by which it is distributing TRMM data and ascii is
likely no longer available. We should probably remove that Rscript.
Honestly, it's difficult to keep up with all the changes NASA makes in
their data distribution! But presumably you are interested in using
TRMM
data in MET.
A second option would be reading the TRMM binary files instead.
However, I
ran into problems on that route as well!
I retrieved some TRMM binary data here...
(1) Go to this page https://pmm.nasa.gov/data-access/downloads/trmm
Register for PPS is you haven't already done so.
(2) On the for "Binary 34b2x" click on the orange download button.
(3) Ultimately, I downloaded the file named 3B42RT.2016061512
<(201)%20606-1512>.7.bin.gz from this page:
https://pps.gsfc.nasa.gov/tmpa/?directory=/pub/TMPA/TRMMreal
time/mergeIRMicro/2016/06/15
I was playing around with the Rscript and got it to read the data, but
didn't get coherent output in the resulting NetCDF file.
John
On Fri, Aug 4, 2017 at 8:49 PM, Victor Almanza via RT
<met_help at ucar.edu>
wrote:
>
> Fri Aug 04 20:49:56 2017: Request 81486 was acted upon.
> Transaction: Ticket created by victor.al.vlz at gmail.com
> Queue: met_help
> Subject: TRMM data
> Owner: Nobody
> Requestors: victor.al.vlz at gmail.com
> Status: new
> Ticket <URL:
https://rt.rap.ucar.edu/rt/Ticket/Display.html?id=81486 >
>
>
> Dear MET help staff
>
> I am trying to convert TRMM data in ASCII form with the R script
> "trmm2nc.R". However, I cannot download the data from the links you
provide
> on the observations website (
> http://disc.sci.gsfc.nasa.gov/precipitation/tovas)
>
> I know I can download data from other sites (Mirador, giovanni,
etc).
> However, I can't find an Ascii option. Probably I'm overlooking
something.
>
> Could you please provide a link where I can download the data in the
Ascii
> format required by the R script ?
>
> Thank you
>
> Best regards,
>
> Victor
>
>
------------------------------------------------
Subject: TRMM data
From: Victor Almanza
Time: Wed Aug 09 13:39:52 2017
Hi Minna,
Thank you very much for your help on this. I wait, there is no big
rush.
Have a nice day,
Victor
On Wed, Aug 9, 2017 at 10:37 AM, Minna Win via RT <met_help at ucar.edu>
wrote:
> Hello Victor,
>
> Thank you for bringing this to our attention. It looks like NASA
has done
> some reorganizing of their TRMM website. We contacted the project
> scientist to determine whether this data is still available and (if
still
> available) where it can be retrieved. We will keep you updated as
soon as
> we have more information. Thank you for your patience and for your
> interest in MET.
>
>
> Regards,
> Minna
>
> ---------------
> Minna Win
> NCAR
> Research Applications Lab
> Phone: 303-497-8423
> Fax: 302-497-8401
>
>
> On Sat, Aug 5, 2017 at 2:49 AM, Victor Almanza via RT
<met_help at ucar.edu>
> wrote:
>
> >
> > Fri Aug 04 20:49:56 2017: Request 81486 was acted upon.
> > Transaction: Ticket created by victor.al.vlz at gmail.com
> > Queue: met_help
> > Subject: TRMM data
> > Owner: Nobody
> > Requestors: victor.al.vlz at gmail.com
> > Status: new
> > Ticket <URL:
https://rt.rap.ucar.edu/rt/Ticket/Display.html?id=81486 >
> >
> >
> > Dear MET help staff
> >
> > I am trying to convert TRMM data in ASCII form with the R script
> > "trmm2nc.R". However, I cannot download the data from the links
you
> provide
> > on the observations website (
> > http://disc.sci.gsfc.nasa.gov/precipitation/tovas)
> >
> > I know I can download data from other sites (Mirador, giovanni,
etc).
> > However, I can't find an Ascii option. Probably I'm overlooking
> something.
> >
> > Could you please provide a link where I can download the data in
the
> Ascii
> > format required by the R script ?
> >
> > Thank you
> >
> > Best regards,
> >
> > Victor
> >
> >
>
>
------------------------------------------------
Subject: TRMM data
From: Victor Almanza
Time: Wed Aug 09 15:06:49 2017
Hi John,
I hope you are doing well.
Thank you for the detailed reply and your time on this. It is very
helpful.
I agree, it's a fast pace, but I think all of you in the MET team do
an
outstanding job.
As you said, it is likely that ASCII is no longer available. I also
tried
with OpenDAP, but the format is very different.
In these days, I registered for PPS and tried some of the links they
provide.
In that regard, maybe they changed the headers on the binary files ??
I think I better wait to use the binary files.
My workaround was to download TRMM data in NetCDF format, and used
NCO+sed/awk to create an ASCII file in the same format I found on the
MET-help forum. Fortunately I found examples for both the 3-day and
daily
formats which helped me to create the headers in the file. Then I ran
the R
script for ASCII focusing on the daily files and so far the resulting
file
in the MET's NetCDF intermediate format is consistent with the one I
downloaded. I still have to run MET to make sure it works.
The only issue I found was that I needed the version 3.0.1 of R. For
some
reason, I had trouble with the ***prec="single"*** part in the script.
Since I am interested also in monthly averages of precipitation, my
question is:
1) is it correct to use a monthly average file from NASA and use the
workaround I described to create a MET-ready precipitation file to
evaluate
the monthly-averaged model outputs I have ? As a note I am using
hourly
accumulations, which I can further sum/add up if needed (with
pcp_combine).
It would be one single file of observations against one single file of
model results, after regridding the model output to the lat/lon grid
of the
NASA observations.
I am thinking that I may only need to change the attributes. However I
don't have clear the time period I should use in the header of the
ASCII
file and hence in the intermediate MET netcdf file. For the units, I
am
thinking to use 24 hrs, since NASA provides them in (mm/day)
What do you suggest ?
Thank you very much again for your time.
Best regards,
Victor
On Wed, Aug 9, 2017 at 11:08 AM, John Halley Gotway via RT <
met_help at ucar.edu> wrote:
> Hi Victor,
>
> I see that you're trying to access TRMM data. Yes, I believe that
NASA has
> updated the method by which it is distributing TRMM data and ascii
is
> likely no longer available. We should probably remove that Rscript.
>
> Honestly, it's difficult to keep up with all the changes NASA makes
in
> their data distribution! But presumably you are interested in using
TRMM
> data in MET.
>
> A second option would be reading the TRMM binary files instead.
However, I
> ran into problems on that route as well!
>
> I retrieved some TRMM binary data here...
>
> (1) Go to this page https://pmm.nasa.gov/data-access/downloads/trmm
> Register for PPS is you haven't already done so.
>
> (2) On the for "Binary 34b2x" click on the orange download button.
>
> (3) Ultimately, I downloaded the file named 3B42RT.2016061512
> <(201)%20606-1512>.7.bin.gz from this page:
> https://pps.gsfc.nasa.gov/tmpa/?directory=/pub/TMPA/TRMMreal
> time/mergeIRMicro/2016/06/15
>
> I was playing around with the Rscript and got it to read the data,
but
> didn't get coherent output in the resulting NetCDF file.
>
> John
>
>
> On Fri, Aug 4, 2017 at 8:49 PM, Victor Almanza via RT
<met_help at ucar.edu>
> wrote:
>
> >
> > Fri Aug 04 20:49:56 2017: Request 81486 was acted upon.
> > Transaction: Ticket created by victor.al.vlz at gmail.com
> > Queue: met_help
> > Subject: TRMM data
> > Owner: Nobody
> > Requestors: victor.al.vlz at gmail.com
> > Status: new
> > Ticket <URL:
https://rt.rap.ucar.edu/rt/Ticket/Display.html?id=81486 >
> >
> >
> > Dear MET help staff
> >
> > I am trying to convert TRMM data in ASCII form with the R script
> > "trmm2nc.R". However, I cannot download the data from the links
you
> provide
> > on the observations website (
> > http://disc.sci.gsfc.nasa.gov/precipitation/tovas)
> >
> > I know I can download data from other sites (Mirador, giovanni,
etc).
> > However, I can't find an Ascii option. Probably I'm overlooking
> something.
> >
> > Could you please provide a link where I can download the data in
the
> Ascii
> > format required by the R script ?
> >
> > Thank you
> >
> > Best regards,
> >
> > Victor
> >
> >
>
>
------------------------------------------------
Subject: TRMM data
From: Julie Prestopnik
Time: Thu Aug 10 09:06:04 2017
Hi Victor. John is out of the office but will be back next week. He
is
more qualified to answer your questions. I anticipate you will hear
more
from him next week when he is back in the office.
Julie
On Wed, Aug 9, 2017 at 3:06 PM, Victor Almanza via RT
<met_help at ucar.edu>
wrote:
>
> <URL: https://rt.rap.ucar.edu/rt/Ticket/Display.html?id=81486 >
>
> Hi John,
>
> I hope you are doing well.
>
> Thank you for the detailed reply and your time on this. It is very
helpful.
> I agree, it's a fast pace, but I think all of you in the MET team do
an
> outstanding job.
>
> As you said, it is likely that ASCII is no longer available. I also
tried
> with OpenDAP, but the format is very different.
>
> In these days, I registered for PPS and tried some of the links they
> provide.
> In that regard, maybe they changed the headers on the binary files
??
> I think I better wait to use the binary files.
>
> My workaround was to download TRMM data in NetCDF format, and used
> NCO+sed/awk to create an ASCII file in the same format I found on
the
> MET-help forum. Fortunately I found examples for both the 3-day and
daily
> formats which helped me to create the headers in the file. Then I
ran the R
> script for ASCII focusing on the daily files and so far the
resulting file
> in the MET's NetCDF intermediate format is consistent with the one I
> downloaded. I still have to run MET to make sure it works.
>
> The only issue I found was that I needed the version 3.0.1 of R. For
some
> reason, I had trouble with the ***prec="single"*** part in the
script.
>
> Since I am interested also in monthly averages of precipitation, my
> question is:
>
> 1) is it correct to use a monthly average file from NASA and use the
> workaround I described to create a MET-ready precipitation file to
evaluate
> the monthly-averaged model outputs I have ? As a note I am using
hourly
> accumulations, which I can further sum/add up if needed (with
pcp_combine).
> It would be one single file of observations against one single file
of
> model results, after regridding the model output to the lat/lon grid
of the
> NASA observations.
>
> I am thinking that I may only need to change the attributes. However
I
> don't have clear the time period I should use in the header of the
ASCII
> file and hence in the intermediate MET netcdf file. For the units, I
am
> thinking to use 24 hrs, since NASA provides them in (mm/day)
>
> What do you suggest ?
>
> Thank you very much again for your time.
>
> Best regards,
>
> Victor
>
> On Wed, Aug 9, 2017 at 11:08 AM, John Halley Gotway via RT <
> met_help at ucar.edu> wrote:
>
> > Hi Victor,
> >
> > I see that you're trying to access TRMM data. Yes, I believe that
NASA
> has
> > updated the method by which it is distributing TRMM data and ascii
is
> > likely no longer available. We should probably remove that
Rscript.
> >
> > Honestly, it's difficult to keep up with all the changes NASA
makes in
> > their data distribution! But presumably you are interested in
using TRMM
> > data in MET.
> >
> > A second option would be reading the TRMM binary files instead.
> However, I
> > ran into problems on that route as well!
> >
> > I retrieved some TRMM binary data here...
> >
> > (1) Go to this page https://pmm.nasa.gov/data-
access/downloads/trmm
> > Register for PPS is you haven't already done so.
> >
> > (2) On the for "Binary 34b2x" click on the orange download button.
> >
> > (3) Ultimately, I downloaded the file named 3B42RT.2016061512
> > <(201)%20606-1512>.7.bin.gz from this page:
> > https://pps.gsfc.nasa.gov/tmpa/?directory=/pub/TMPA/TRMMreal
> > time/mergeIRMicro/2016/06/15
> >
> > I was playing around with the Rscript and got it to read the data,
but
> > didn't get coherent output in the resulting NetCDF file.
> >
> > John
> >
> >
> > On Fri, Aug 4, 2017 at 8:49 PM, Victor Almanza via RT
<met_help at ucar.edu
> >
> > wrote:
> >
> > >
> > > Fri Aug 04 20:49:56 2017: Request 81486 was acted upon.
> > > Transaction: Ticket created by victor.al.vlz at gmail.com
> > > Queue: met_help
> > > Subject: TRMM data
> > > Owner: Nobody
> > > Requestors: victor.al.vlz at gmail.com
> > > Status: new
> > > Ticket <URL:
https://rt.rap.ucar.edu/rt/Ticket/Display.html?id=81486
> >
> > >
> > >
> > > Dear MET help staff
> > >
> > > I am trying to convert TRMM data in ASCII form with the R script
> > > "trmm2nc.R". However, I cannot download the data from the links
you
> > provide
> > > on the observations website (
> > > http://disc.sci.gsfc.nasa.gov/precipitation/tovas)
> > >
> > > I know I can download data from other sites (Mirador, giovanni,
etc).
> > > However, I can't find an Ascii option. Probably I'm overlooking
> > something.
> > >
> > > Could you please provide a link where I can download the data in
the
> > Ascii
> > > format required by the R script ?
> > >
> > > Thank you
> > >
> > > Best regards,
> > >
> > > Victor
> > >
> > >
> >
> >
>
>
------------------------------------------------
Subject: TRMM data
From: Victor Almanza
Time: Thu Aug 10 10:23:00 2017
Hi Julie
Thank you very much.
Best regards,
Victor
On Thu, Aug 10, 2017 at 8:06 AM, Julie Prestopnik via RT
<met_help at ucar.edu>
wrote:
> Hi Victor. John is out of the office but will be back next week.
He is
> more qualified to answer your questions. I anticipate you will hear
more
> from him next week when he is back in the office.
>
> Julie
>
> On Wed, Aug 9, 2017 at 3:06 PM, Victor Almanza via RT
<met_help at ucar.edu>
> wrote:
>
> >
> > <URL: https://rt.rap.ucar.edu/rt/Ticket/Display.html?id=81486 >
> >
> > Hi John,
> >
> > I hope you are doing well.
> >
> > Thank you for the detailed reply and your time on this. It is very
> helpful.
> > I agree, it's a fast pace, but I think all of you in the MET team
do an
> > outstanding job.
> >
> > As you said, it is likely that ASCII is no longer available. I
also tried
> > with OpenDAP, but the format is very different.
> >
> > In these days, I registered for PPS and tried some of the links
they
> > provide.
> > In that regard, maybe they changed the headers on the binary files
??
> > I think I better wait to use the binary files.
> >
> > My workaround was to download TRMM data in NetCDF format, and used
> > NCO+sed/awk to create an ASCII file in the same format I found on
the
> > MET-help forum. Fortunately I found examples for both the 3-day
and daily
> > formats which helped me to create the headers in the file. Then I
ran
> the R
> > script for ASCII focusing on the daily files and so far the
resulting
> file
> > in the MET's NetCDF intermediate format is consistent with the one
I
> > downloaded. I still have to run MET to make sure it works.
> >
> > The only issue I found was that I needed the version 3.0.1 of R.
For some
> > reason, I had trouble with the ***prec="single"*** part in the
script.
> >
> > Since I am interested also in monthly averages of precipitation,
my
> > question is:
> >
> > 1) is it correct to use a monthly average file from NASA and use
the
> > workaround I described to create a MET-ready precipitation file to
> evaluate
> > the monthly-averaged model outputs I have ? As a note I am using
hourly
> > accumulations, which I can further sum/add up if needed (with
> pcp_combine).
> > It would be one single file of observations against one single
file of
> > model results, after regridding the model output to the lat/lon
grid of
> the
> > NASA observations.
> >
> > I am thinking that I may only need to change the attributes.
However I
> > don't have clear the time period I should use in the header of the
ASCII
> > file and hence in the intermediate MET netcdf file. For the units,
I am
> > thinking to use 24 hrs, since NASA provides them in (mm/day)
> >
> > What do you suggest ?
> >
> > Thank you very much again for your time.
> >
> > Best regards,
> >
> > Victor
> >
> > On Wed, Aug 9, 2017 at 11:08 AM, John Halley Gotway via RT <
> > met_help at ucar.edu> wrote:
> >
> > > Hi Victor,
> > >
> > > I see that you're trying to access TRMM data. Yes, I believe
that NASA
> > has
> > > updated the method by which it is distributing TRMM data and
ascii is
> > > likely no longer available. We should probably remove that
Rscript.
> > >
> > > Honestly, it's difficult to keep up with all the changes NASA
makes in
> > > their data distribution! But presumably you are interested in
using
> TRMM
> > > data in MET.
> > >
> > > A second option would be reading the TRMM binary files instead.
> > However, I
> > > ran into problems on that route as well!
> > >
> > > I retrieved some TRMM binary data here...
> > >
> > > (1) Go to this page https://pmm.nasa.gov/data-
access/downloads/trmm
> > > Register for PPS is you haven't already done so.
> > >
> > > (2) On the for "Binary 34b2x" click on the orange download
button.
> > >
> > > (3) Ultimately, I downloaded the file named 3B42RT.2016061512
> > > <(201)%20606-1512>.7.bin.gz from this page:
> > > https://pps.gsfc.nasa.gov/tmpa/?directory=/pub/TMPA/TRMMreal
> > > time/mergeIRMicro/2016/06/15
> > >
> > > I was playing around with the Rscript and got it to read the
data, but
> > > didn't get coherent output in the resulting NetCDF file.
> > >
> > > John
> > >
> > >
> > > On Fri, Aug 4, 2017 at 8:49 PM, Victor Almanza via RT <
> met_help at ucar.edu
> > >
> > > wrote:
> > >
> > > >
> > > > Fri Aug 04 20:49:56 2017: Request 81486 was acted upon.
> > > > Transaction: Ticket created by victor.al.vlz at gmail.com
> > > > Queue: met_help
> > > > Subject: TRMM data
> > > > Owner: Nobody
> > > > Requestors: victor.al.vlz at gmail.com
> > > > Status: new
> > > > Ticket <URL: https://rt.rap.ucar.edu/rt/
> Ticket/Display.html?id=81486
> > >
> > > >
> > > >
> > > > Dear MET help staff
> > > >
> > > > I am trying to convert TRMM data in ASCII form with the R
script
> > > > "trmm2nc.R". However, I cannot download the data from the
links you
> > > provide
> > > > on the observations website (
> > > > http://disc.sci.gsfc.nasa.gov/precipitation/tovas)
> > > >
> > > > I know I can download data from other sites (Mirador,
giovanni, etc).
> > > > However, I can't find an Ascii option. Probably I'm
overlooking
> > > something.
> > > >
> > > > Could you please provide a link where I can download the data
in the
> > > Ascii
> > > > format required by the R script ?
> > > >
> > > > Thank you
> > > >
> > > > Best regards,
> > > >
> > > > Victor
> > > >
> > > >
> > >
> > >
> >
> >
>
>
------------------------------------------------
Subject: TRMM data
From: Minna Win
Time: Thu Aug 10 12:22:11 2017
Hello Victor,
I received this from NASA:
https://disc.gsfc.nasa.gov/datasets/TRMM_3B42_Daily_V7/
summary?keywords=3b42%20daily
https://disc.gsfc.nasa.gov/datasets/TRMM_3B42_V7/summary?
keywords=3b42%203%20hourly
and follow the directions from here to get activate access to the TRMM
data:
https://disc.gsfc.nasa.gov/earthdata-login
after you register to EarthData, which is mandatory to access the
data.
We will need to update our web page to reflect this change. I hope
this
data works for you.
Regards,
Minna
---------------
Minna Win
NCAR
Research Applications Lab
Phone: 303-497-8423
Fax: 302-497-8401
On Thu, Aug 10, 2017 at 4:23 PM, Victor Almanza via RT
<met_help at ucar.edu>
wrote:
>
> <URL: https://rt.rap.ucar.edu/rt/Ticket/Display.html?id=81486 >
>
> Hi Julie
>
> Thank you very much.
>
> Best regards,
>
> Victor
>
> On Thu, Aug 10, 2017 at 8:06 AM, Julie Prestopnik via RT <
> met_help at ucar.edu>
> wrote:
>
> > Hi Victor. John is out of the office but will be back next week.
He is
> > more qualified to answer your questions. I anticipate you will
hear more
> > from him next week when he is back in the office.
> >
> > Julie
> >
> > On Wed, Aug 9, 2017 at 3:06 PM, Victor Almanza via RT
<met_help at ucar.edu
> >
> > wrote:
> >
> > >
> > > <URL: https://rt.rap.ucar.edu/rt/Ticket/Display.html?id=81486 >
> > >
> > > Hi John,
> > >
> > > I hope you are doing well.
> > >
> > > Thank you for the detailed reply and your time on this. It is
very
> > helpful.
> > > I agree, it's a fast pace, but I think all of you in the MET
team do an
> > > outstanding job.
> > >
> > > As you said, it is likely that ASCII is no longer available. I
also
> tried
> > > with OpenDAP, but the format is very different.
> > >
> > > In these days, I registered for PPS and tried some of the links
they
> > > provide.
> > > In that regard, maybe they changed the headers on the binary
files ??
> > > I think I better wait to use the binary files.
> > >
> > > My workaround was to download TRMM data in NetCDF format, and
used
> > > NCO+sed/awk to create an ASCII file in the same format I found
on the
> > > MET-help forum. Fortunately I found examples for both the 3-day
and
> daily
> > > formats which helped me to create the headers in the file. Then
I ran
> > the R
> > > script for ASCII focusing on the daily files and so far the
resulting
> > file
> > > in the MET's NetCDF intermediate format is consistent with the
one I
> > > downloaded. I still have to run MET to make sure it works.
> > >
> > > The only issue I found was that I needed the version 3.0.1 of R.
For
> some
> > > reason, I had trouble with the ***prec="single"*** part in the
script.
> > >
> > > Since I am interested also in monthly averages of precipitation,
my
> > > question is:
> > >
> > > 1) is it correct to use a monthly average file from NASA and use
the
> > > workaround I described to create a MET-ready precipitation file
to
> > evaluate
> > > the monthly-averaged model outputs I have ? As a note I am using
hourly
> > > accumulations, which I can further sum/add up if needed (with
> > pcp_combine).
> > > It would be one single file of observations against one single
file of
> > > model results, after regridding the model output to the lat/lon
grid of
> > the
> > > NASA observations.
> > >
> > > I am thinking that I may only need to change the attributes.
However I
> > > don't have clear the time period I should use in the header of
the
> ASCII
> > > file and hence in the intermediate MET netcdf file. For the
units, I am
> > > thinking to use 24 hrs, since NASA provides them in (mm/day)
> > >
> > > What do you suggest ?
> > >
> > > Thank you very much again for your time.
> > >
> > > Best regards,
> > >
> > > Victor
> > >
> > > On Wed, Aug 9, 2017 at 11:08 AM, John Halley Gotway via RT <
> > > met_help at ucar.edu> wrote:
> > >
> > > > Hi Victor,
> > > >
> > > > I see that you're trying to access TRMM data. Yes, I believe
that
> NASA
> > > has
> > > > updated the method by which it is distributing TRMM data and
ascii is
> > > > likely no longer available. We should probably remove that
Rscript.
> > > >
> > > > Honestly, it's difficult to keep up with all the changes NASA
makes
> in
> > > > their data distribution! But presumably you are interested in
using
> > TRMM
> > > > data in MET.
> > > >
> > > > A second option would be reading the TRMM binary files
instead.
> > > However, I
> > > > ran into problems on that route as well!
> > > >
> > > > I retrieved some TRMM binary data here...
> > > >
> > > > (1) Go to this page https://pmm.nasa.gov/data-
access/downloads/trmm
> > > > Register for PPS is you haven't already done so.
> > > >
> > > > (2) On the for "Binary 34b2x" click on the orange download
button.
> > > >
> > > > (3) Ultimately, I downloaded the file named 3B42RT.2016061512
> > > > <(201)%20606-1512>.7.bin.gz from this page:
> > > > https://pps.gsfc.nasa.gov/tmpa/?directory=/pub/TMPA/TRMMreal
> > > > time/mergeIRMicro/2016/06/15
> > > >
> > > > I was playing around with the Rscript and got it to read the
data,
> but
> > > > didn't get coherent output in the resulting NetCDF file.
> > > >
> > > > John
> > > >
> > > >
> > > > On Fri, Aug 4, 2017 at 8:49 PM, Victor Almanza via RT <
> > met_help at ucar.edu
> > > >
> > > > wrote:
> > > >
> > > > >
> > > > > Fri Aug 04 20:49:56 2017: Request 81486 was acted upon.
> > > > > Transaction: Ticket created by victor.al.vlz at gmail.com
> > > > > Queue: met_help
> > > > > Subject: TRMM data
> > > > > Owner: Nobody
> > > > > Requestors: victor.al.vlz at gmail.com
> > > > > Status: new
> > > > > Ticket <URL: https://rt.rap.ucar.edu/rt/
> > Ticket/Display.html?id=81486
> > > >
> > > > >
> > > > >
> > > > > Dear MET help staff
> > > > >
> > > > > I am trying to convert TRMM data in ASCII form with the R
script
> > > > > "trmm2nc.R". However, I cannot download the data from the
links you
> > > > provide
> > > > > on the observations website (
> > > > > http://disc.sci.gsfc.nasa.gov/precipitation/tovas)
> > > > >
> > > > > I know I can download data from other sites (Mirador,
giovanni,
> etc).
> > > > > However, I can't find an Ascii option. Probably I'm
overlooking
> > > > something.
> > > > >
> > > > > Could you please provide a link where I can download the
data in
> the
> > > > Ascii
> > > > > format required by the R script ?
> > > > >
> > > > > Thank you
> > > > >
> > > > > Best regards,
> > > > >
> > > > > Victor
> > > > >
> > > > >
> > > >
> > > >
> > >
> > >
> >
> >
>
>
------------------------------------------------
Subject: TRMM data
From: Victor Almanza
Time: Thu Aug 10 15:07:23 2017
Hi Minna
Thanks for the links. I registered and am trying to subset some files.
They are in NetCDF format (*.nc4). I think I need to process them to
have
them in a MET-ready format.
In any event, I will keep on looking at the options to download them.
Thanks again for your help,
Best regards,
Victor
On Thu, Aug 10, 2017 at 11:22 AM, Minna Win via RT <met_help at ucar.edu>
wrote:
> Hello Victor,
>
> I received this from NASA:
>
>
> https://disc.gsfc.nasa.gov/datasets/TRMM_3B42_Daily_V7/
> summary?keywords=3b42%20daily
>
> https://disc.gsfc.nasa.gov/datasets/TRMM_3B42_V7/summary?
> keywords=3b42%203%20hourly
>
>
>
> and follow the directions from here to get activate access to the
TRMM
> data:
>
> https://disc.gsfc.nasa.gov/earthdata-login
>
>
> after you register to EarthData, which is mandatory to access the
data.
>
> We will need to update our web page to reflect this change. I hope
this
> data works for you.
>
> Regards,
> Minna
>
>
>
>
> ---------------
> Minna Win
> NCAR
> Research Applications Lab
> Phone: 303-497-8423
> Fax: 302-497-8401
>
>
> On Thu, Aug 10, 2017 at 4:23 PM, Victor Almanza via RT
<met_help at ucar.edu>
> wrote:
>
> >
> > <URL: https://rt.rap.ucar.edu/rt/Ticket/Display.html?id=81486 >
> >
> > Hi Julie
> >
> > Thank you very much.
> >
> > Best regards,
> >
> > Victor
> >
> > On Thu, Aug 10, 2017 at 8:06 AM, Julie Prestopnik via RT <
> > met_help at ucar.edu>
> > wrote:
> >
> > > Hi Victor. John is out of the office but will be back next
week. He
> is
> > > more qualified to answer your questions. I anticipate you will
hear
> more
> > > from him next week when he is back in the office.
> > >
> > > Julie
> > >
> > > On Wed, Aug 9, 2017 at 3:06 PM, Victor Almanza via RT <
> met_help at ucar.edu
> > >
> > > wrote:
> > >
> > > >
> > > > <URL: https://rt.rap.ucar.edu/rt/Ticket/Display.html?id=81486
>
> > > >
> > > > Hi John,
> > > >
> > > > I hope you are doing well.
> > > >
> > > > Thank you for the detailed reply and your time on this. It is
very
> > > helpful.
> > > > I agree, it's a fast pace, but I think all of you in the MET
team do
> an
> > > > outstanding job.
> > > >
> > > > As you said, it is likely that ASCII is no longer available. I
also
> > tried
> > > > with OpenDAP, but the format is very different.
> > > >
> > > > In these days, I registered for PPS and tried some of the
links they
> > > > provide.
> > > > In that regard, maybe they changed the headers on the binary
files ??
> > > > I think I better wait to use the binary files.
> > > >
> > > > My workaround was to download TRMM data in NetCDF format, and
used
> > > > NCO+sed/awk to create an ASCII file in the same format I found
on the
> > > > MET-help forum. Fortunately I found examples for both the 3-
day and
> > daily
> > > > formats which helped me to create the headers in the file.
Then I ran
> > > the R
> > > > script for ASCII focusing on the daily files and so far the
resulting
> > > file
> > > > in the MET's NetCDF intermediate format is consistent with the
one I
> > > > downloaded. I still have to run MET to make sure it works.
> > > >
> > > > The only issue I found was that I needed the version 3.0.1 of
R. For
> > some
> > > > reason, I had trouble with the ***prec="single"*** part in the
> script.
> > > >
> > > > Since I am interested also in monthly averages of
precipitation, my
> > > > question is:
> > > >
> > > > 1) is it correct to use a monthly average file from NASA and
use the
> > > > workaround I described to create a MET-ready precipitation
file to
> > > evaluate
> > > > the monthly-averaged model outputs I have ? As a note I am
using
> hourly
> > > > accumulations, which I can further sum/add up if needed (with
> > > pcp_combine).
> > > > It would be one single file of observations against one single
file
> of
> > > > model results, after regridding the model output to the
lat/lon grid
> of
> > > the
> > > > NASA observations.
> > > >
> > > > I am thinking that I may only need to change the attributes.
However
> I
> > > > don't have clear the time period I should use in the header of
the
> > ASCII
> > > > file and hence in the intermediate MET netcdf file. For the
units, I
> am
> > > > thinking to use 24 hrs, since NASA provides them in (mm/day)
> > > >
> > > > What do you suggest ?
> > > >
> > > > Thank you very much again for your time.
> > > >
> > > > Best regards,
> > > >
> > > > Victor
> > > >
> > > > On Wed, Aug 9, 2017 at 11:08 AM, John Halley Gotway via RT <
> > > > met_help at ucar.edu> wrote:
> > > >
> > > > > Hi Victor,
> > > > >
> > > > > I see that you're trying to access TRMM data. Yes, I
believe that
> > NASA
> > > > has
> > > > > updated the method by which it is distributing TRMM data and
ascii
> is
> > > > > likely no longer available. We should probably remove that
> Rscript.
> > > > >
> > > > > Honestly, it's difficult to keep up with all the changes
NASA makes
> > in
> > > > > their data distribution! But presumably you are interested
in
> using
> > > TRMM
> > > > > data in MET.
> > > > >
> > > > > A second option would be reading the TRMM binary files
instead.
> > > > However, I
> > > > > ran into problems on that route as well!
> > > > >
> > > > > I retrieved some TRMM binary data here...
> > > > >
> > > > > (1) Go to this page https://pmm.nasa.gov/data-
> access/downloads/trmm
> > > > > Register for PPS is you haven't already done so.
> > > > >
> > > > > (2) On the for "Binary 34b2x" click on the orange download
button.
> > > > >
> > > > > (3) Ultimately, I downloaded the file named
3B42RT.2016061512
> > > > > <(201)%20606-1512>.7.bin.gz from this page:
> > > > > https://pps.gsfc.nasa.gov/tmpa/?directory=/pub/TMPA/TRMMreal
> > > > > time/mergeIRMicro/2016/06/15
> > > > >
> > > > > I was playing around with the Rscript and got it to read the
data,
> > but
> > > > > didn't get coherent output in the resulting NetCDF file.
> > > > >
> > > > > John
> > > > >
> > > > >
> > > > > On Fri, Aug 4, 2017 at 8:49 PM, Victor Almanza via RT <
> > > met_help at ucar.edu
> > > > >
> > > > > wrote:
> > > > >
> > > > > >
> > > > > > Fri Aug 04 20:49:56 2017: Request 81486 was acted upon.
> > > > > > Transaction: Ticket created by victor.al.vlz at gmail.com
> > > > > > Queue: met_help
> > > > > > Subject: TRMM data
> > > > > > Owner: Nobody
> > > > > > Requestors: victor.al.vlz at gmail.com
> > > > > > Status: new
> > > > > > Ticket <URL: https://rt.rap.ucar.edu/rt/
> > > Ticket/Display.html?id=81486
> > > > >
> > > > > >
> > > > > >
> > > > > > Dear MET help staff
> > > > > >
> > > > > > I am trying to convert TRMM data in ASCII form with the R
script
> > > > > > "trmm2nc.R". However, I cannot download the data from the
links
> you
> > > > > provide
> > > > > > on the observations website (
> > > > > > http://disc.sci.gsfc.nasa.gov/precipitation/tovas)
> > > > > >
> > > > > > I know I can download data from other sites (Mirador,
giovanni,
> > etc).
> > > > > > However, I can't find an Ascii option. Probably I'm
overlooking
> > > > > something.
> > > > > >
> > > > > > Could you please provide a link where I can download the
data in
> > the
> > > > > Ascii
> > > > > > format required by the R script ?
> > > > > >
> > > > > > Thank you
> > > > > >
> > > > > > Best regards,
> > > > > >
> > > > > > Victor
> > > > > >
> > > > > >
> > > > >
> > > > >
> > > >
> > > >
> > >
> > >
> >
> >
>
>
------------------------------------------------
Subject: TRMM data
From: Minna Win
Time: Mon Aug 14 11:17:09 2017
Updated observation_data.php to reflect change in NASA links to TRMM
data and removed (broken) links to binary FTP, which is no longer
available.
------------------------------------------------
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