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

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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

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Are they 4ust pictures?

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https/''meto""icenews.wordpress.com'tag'satellite5imagery'

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What can you do?

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

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What can you do?

http/''scottishsnow.wordpress.com'($)*'$8')*'ritish5hydrological5society5($)*5symposium5poster'

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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

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Many thanks

Guestions?

@MikeRSpencerscottishsnow.wordpress.com

[email protected]