working with raster time series

8/10/2019 Working with raster time series

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Outline

What are raster time series data?

What can you do with them?

Why are they a challenge?

The technical it

Where can you get them?


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!e"initions


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Raster data

OS Terrain#$ !TM% &rown &opyright'dataase right ($)*. AnOrdnance Sur+ey',!-A supplied ser+ice.


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Combined!


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What are they?

http/''www.meto""ice.go+.uk
http://www.metoffice.gov.uk/http://www.metoffice.gov.uk/


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What are they?

Weather

Radar rain"all

Model outputs 0temp'precip'etc1

Satellites

Atmosphere

2and

&ryosphere

Ocean

Repeat 2i!AR

3ridded model outputs

http/''lca.usgs.go+'lca'a"ricalulc'approach.php
http://lca.usgs.gov/lca/africalulc/approach.phphttp://lca.usgs.gov/lca/africalulc/approach.php


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Are they 4ust pictures?


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https/''meto""icenews.wordpress.com'tag'satellite5imagery'
https://metofficenews.wordpress.com/tag/satellite-imagery/https://metofficenews.wordpress.com/tag/satellite-imagery/


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What can you do?

http/''nsidc.org'data'myd)$a)MO!-S snowco+er6 #$$ m6 )57 Sept ($$(
http://nsidc.org/data/myd10a1http://nsidc.org/data/myd10a1


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What can you do?

http/''scottishsnow.wordpress.com'($)*'$8')*'ritish5hydrological5society5($)*5symposium5poster'
http://scottishsnow.wordpress.com/2014/09/14/british-hydrological-society-2014-symposium-poster/http://scottishsnow.wordpress.com/2014/09/14/british-hydrological-society-2014-symposium-poster/


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,asy9


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Why is this a challenge?

Two tiles co+er Scotland

Two MO!-S satellites pass e+ery day

)*:$ tiles per year...

Met O""ice radar rain"all

# min inter+al

(;; tiles a day9

http/''catalystn


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Tools

=rogramming language

3!A2

!ata container0s1

=lotting tool


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Work"low

!ownload dataset

Think time and disc space

File "ormat and repro4ection

Read into container

Analysis

Write results to container

=lot results


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Work"low

!ownload dataset

Think time and disc space

File "ormat and repro4ection

Read into container

Analysis

Write results to container

=lot results


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3!A2

File "ormat 0gdal>translate1 Merging 0gdal>merge.py1

Repro4ection 0gdalwarp1

ati+ely in =ython

se in R +ia

rgdal

gdaltils


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Analysis

r.mask select only areas o" interest

r.mapcalc general sums

Also good "or comining sources

r.stats summary o" raster

):) installed modules 0+:.*.#1

Write results to S2ite


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Bow?


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Some data sources

Met O""ice http/''www.meto""ice.go+.uk'climatechange'science'monitoring'ukcp$8'download'indeC.html

Dritish Atmospheric !ata &entre

http/''adc.nerc.ac.uk'home'indeC.html

,dina 0education only1

http/''edina.ac.uk'

ASA

http/''modis.gs"c.nasa.go+'data'dataprod'indeC.php

&entre "or ,cology and Bydrology

http/''eidchu.ceh.ac.uk'metadata'#dc)E8dc5":8(5*8a587(:5a:;87a#$7":e
http://www.metoffice.gov.uk/climatechange/science/monitoring/ukcp09/download/index.htmlhttp://badc.nerc.ac.uk/home/index.htmlhttp://edina.ac.uk/http://modis.gsfc.nasa.gov/data/dataprod/index.phphttp://eidchub.ceh.ac.uk/metadata/5dc179dc-f692-49ba-9326-a6893a503f6ehttp://eidchub.ceh.ac.uk/metadata/5dc179dc-f692-49ba-9326-a6893a503f6ehttp://modis.gsfc.nasa.gov/data/dataprod/index.phphttp://edina.ac.uk/http://badc.nerc.ac.uk/home/index.htmlhttp://www.metoffice.gov.uk/climatechange/science/monitoring/ukcp09/download/index.html


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Many thanks

Guestions?

@MikeRSpencerscottishsnow.wordpress.com

[email protected]

working with raster time series

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