iri/ldeo climate data library...2017/07/06 · ‣provide an overview of the iri/ldeo climate data...
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IRI/LDEO Climate Data Library
Massimiliano PasquiInstitute of Biometeorology, CNR-National Research Council Rome, Italy
TUTORIAL
‣provide an overview of the IRI/LDEO Climate Data Library resources;
‣provide a basic skill for identify a data set, make geographical and temporal selection on it, manipulate it;
‣ show the large amount of analysis tools available;
‣provide guidelines for downloading data and/or analysis.
AboutA step–by–step Tutorial
This online exercise is aimed to:
Exercise: Targetdataset | spatial domani | time window
TARGET DATA SET
the “Monthly Sea Surface Temperature Analysis” (Reynolds Smith Optimal Interpolation v.2) maintained by the National Centers for Environmental Prediction (NCEP) of the NOAA*
* National Oceanic And Atmospheric Administration
the Mediterranean basin
TARGET SPATIAL DOMAIN
August time series from 1982 to 2014
TIME WINDOW
IRID
LWhat is IRIDL? IRI DATA LIBRARY
http://iridl.ldeo.columbia.edu
Massimiliano Pasqui - CNR-IBIMET - IRI/LDEO Climate data Library Tutorial
IRIDL LDEO
A powerful and freely accessible online data repository and analysis tool that allows a user to view, analyze, and download hundreds of terabytes of climate-related data through a standard web browser.
“The IRI Data Library
‣access any number of datasets;
‣create analyses of data ranging from simple averaging to more advanced EOF analyses using the Ingrid Data Analysis Language;
‣monitor present climate conditions with maps and analyses in the Maproom;
‣create visual representations of data, including animations;
‣download data in a variety of commonly-used formats, including GIS-compatible formats.
‣ there are also a couple of efficient tools: the Search Bar and the Help Resources
Massimiliano Pasqui - CNR-IBIMET - IRI/LDEO Climate data Library Tutorial
A powerful free tool
‣access any number of datasets;
‣create analyses of data ranging from simple averaging to more advanced EOF analyses using the Ingrid Data Analysis Language;
‣monitor present climate conditions with maps and analyses in the Maproom;
‣create visual representations of data, including animations;
‣download data in a variety of commonly-used formats, including GIS-compatible formats.
‣ there are also a couple of efficient tools: the Search Bar and the Help Resources
Massimiliano Pasqui - CNR-IBIMET - IRI/LDEO Climate data Library Tutorial
A powerful free tool
‣access any number of datasets;
‣create analyses of data ranging from simple averaging to more advanced EOF analyses using the Ingrid Data Analysis Language;
‣monitor present climate conditions with maps and analyses in the Maproom;
‣create visual representations of data, including animations;
‣download data in a variety of commonly-used formats, including GIS-compatible formats.
‣ there are also a couple of efficient tools: the Search Bar and the Help Resources
Massimiliano Pasqui - CNR-IBIMET - IRI/LDEO Climate data Library Tutorial
A powerful free tool
‣access any number of datasets;
‣create analyses of data ranging from simple averaging to more advanced EOF analyses using the Ingrid Data Analysis Language;
‣monitor present climate conditions with maps and analyses in the Maproom;
‣create visual representations of data, including animations;
‣download data in a variety of commonly-used formats, including GIS-compatible formats.
‣ there are also a couple of efficient tools: the Search Bar and the Help Resources
Massimiliano Pasqui - CNR-IBIMET - IRI/LDEO Climate data Library Tutorial
A powerful free tool
‣access any number of datasets;
‣create analyses of data ranging from simple averaging to more advanced EOF analyses using the Ingrid Data Analysis Language;
‣monitor present climate conditions with maps and analyses in the Maproom;
‣create visual representations of data, including animations;
‣download data in a variety of commonly-used formats, including GIS-compatible formats.
‣ there are also a couple of efficient tools: the Search Bar and the Help Resources
Massimiliano Pasqui - CNR-IBIMET - IRI/LDEO Climate data Library Tutorial
A powerful free tool
‣access any number of datasets;
‣create analyses of data ranging from simple averaging to more advanced EOF analyses using the Ingrid Data Analysis Language;
‣monitor present climate conditions with maps and analyses in the Maproom;
‣create visual representations of data, including animations;
‣download data in a variety of commonly-used formats, including GIS-compatible formats.
‣ there are also a couple of efficient tools: the Search Bar and the Help Resources
Massimiliano Pasqui - CNR-IBIMET - IRI/LDEO Climate data Library Tutorial
A powerful free tool
CustomSearchwithintheIRIDL.
http://iridl.ldeo.columbia.edu
APowerfulhelpresourcesrepository!
Massimiliano Pasqui - CNR-IBIMET - IRI/LDEO Climate data Library Tutorial
IRIDL LDEO
Massimiliano Pasqui - CNR-IBIMET - IRI/LDEO Climate data Library Tutorial
… we want identify Reynolds Smith Optimal Interpolation v.2 anomaly over the Mediterranean basin for August, from 1982 to 2014, maintained by NCEP – NOAA …
Massimiliano Pasqui - CNR-IBIMET - IRI/LDEO Climate data Library Tutorial
Searchdatabysource
1
SearchfortheNOAAlink
Massimiliano Pasqui - CNR-IBIMET - IRI/LDEO Climate data Library Tutorial
Now follow step by step the following passages: 1. Search for the NOAA link 2. Select the NCEP link 3. Select the EMC link 4. Select the CMB link 5. Select the GLOBAL link 6. Select the Reyn_SmithOIv2 link 7. Select monthly 8. Select the SeaSurfaceTemperature Anomaly link
Finally, the dataset is selected!Massimiliano Pasqui - CNR-IBIMET - IRI/LDEO Climate data Library Tutorial
Step by step
This is the page you should have in front of you
Massimiliano Pasqui - CNR-IBIMET - IRI/LDEO Climate data Library Tutorial
ViewerandOpDonstoselectoradd
SequenDallinksofalltheselectedopDons!
GeneralInfoontheselectedDataset
OtherInfoontheselectedDataset
DatasetReferences
How to read the dataset page
SelectnowtheViewerlink
Massimiliano Pasqui - CNR-IBIMET - IRI/LDEO Climate data Library Tutorial
Mapping the dataset In order to map data with specific settings a powerful tool is provided by the “Views” tab:
The Views tab opens different Data Views Options
Selectthecolorswithcoaststab
Massimiliano Pasqui - CNR-IBIMET - IRI/LDEO Climate data Library Tutorial
SelectTime
After this selection a new page will be opened: the Data Viewer Page, where geographical and time settings could be applied by changing values.
Massimiliano Pasqui - CNR-IBIMET - IRI/LDEO Climate data Library Tutorial
Youcanchangetheplotgeographic
domainhere:
SelectVariableRange
Viewer selection - You can change values in the specific box to modify geographical domain or reference time. Once you have changed the values, to apply them click on the refresh red button.
Massimiliano Pasqui - CNR-IBIMET - IRI/LDEO Climate data Library Tutorial
Data-SelecDonlink
Massimiliano Pasqui - CNR-IBIMET - IRI/LDEO Climate data Library Tutorial
Data selection Now go back to the Dataset Page, by clicking the link on the top of the page (where the is the name of the selected dataset), or simply going back in the browser history.
Once you are here, click on the link Data SelecDon, next to the Viewer link on the top of the page, as shown below:
SelectedNewRanges
AppliedDataselecDon
Geographical&TimeDomain
Data selection In the Geographical and Time Domain Select the New Ranges, as follow: X Longitude 39.5W to 49.5E Y Latitude 30.5N to 49.5N T Time Aug 1982 to Aug 2014
Now you can Apply data selection by clicking on Restrict Ranges
NewrangesappearswiththeirspecificaDonsinthegreybox
Closingthe
selecDon
Massimiliano Pasqui - CNR-IBIMET - IRI/LDEO Climate data Library Tutorial
Stop Selection
Now you can click on Stop Selection, after verifying the data entered.
Nowclickthe“Expert
Mode”link
Performed
selecDonsappear
asnew
concatenated
links!
Expert mode
Here you can see the selection as new bundled links! You can change the parameters in another way, as shown below
Massimiliano Pasqui - CNR-IBIMET - IRI/LDEO Climate data Library Tutorial
Command box - Expert mode The “expert mode” is an alternative way to see and modified options directly in the command box.
…andchoose
“colorswith
coasts”
Nowclickon
theplot
Massimiliano Pasqui - CNR-IBIMET - IRI/LDEO Climate data Library Tutorial
Views mode
Changethespecific
monthandclickon
the“Refresh”
bu_on.
Massimiliano Pasqui - CNR-IBIMET - IRI/LDEO Climate data Library Tutorial
Change the temporal range Now the dataset has a new geographical and temporal ranges.
The SST monthly anomaly for August 2014
Massimiliano Pasqui - CNR-IBIMET - IRI/LDEO Climate data Library Tutorial
Step by step to set the Data Filters
Nowclickon
theaddress
Massimiliano Pasqui - CNR-IBIMET - IRI/LDEO Climate data Library Tutorial
…andnowclick
ontheDatafilters
Againanychoiceisaweb-linkopDon.NowyouhavetoselecttheXYopDonforaspaceaverageovertheenDredomainpreviously
selected.
ClickonViews
Gototheplot
Now you should see this Graph
Here the SST monthly anomaly time series averaged over the selected domain. This time series shows only the August data from 1982 to 2014.
Nowclick
againonthe
address
Gotothe
downloadpage
Forexampleselect
the“ColumnarTable”
Data files Here there are many data download options available, with specific file format and for specific sofware.
Massimiliano Pasqui - CNR-IBIMET - IRI/LDEO Climate data Library Tutorial
Data download The data that you just downloaded should look like this
Putthe“reyn_smithoiv2
dataset”keywordsinthesearchwindow…
Massimiliano Pasqui - CNR-IBIMET - IRI/LDEO Climate data Library Tutorial
An alternative and more “essential” dataset search … Go back to the homepage of the IRI data library
http://iridl.ldeo.columbia.edu/
Herethedesired
dataset.Clickonit
andthisiswhatyou
aregoingtosee
Results of the research
Thank you!
Massimiliano PasquiInstitute of Biometeorology, CNR-National Research Council Rome, Italy
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