Google Earth Engine Workshop

Gennadii Donchyts (Gena), Josh Friedman, Fedor Baart

Google Earth Engine Workshop

Gennadii Donchyts (Gena), Josh Friedman, Fedor Baart

LANDSAT mission

Spatial resolution

Temporal resolution

Spectral resolution

Radiometric resolution

Colorado River

Iranian Bay

Pacullpa, Peru

Water detection using unsupervised classification SLIC (Simple Linear Iterative Clustering), (Archanta, 2012)

Flood Extent Mapping

Focus AreaMekong river and tributaries from Vientiane, Lao PDR, to

the South China Sea. (With adjustments the tool can easily

be used elsewhere.)

Initial Results

Water detection

Thailand Example: Modified Normalized Difference Index(8th percentile) over the Landsat 8 period.This normally represents flood water.

Thailand Example: Modified Normalized Difference Index(40th percentile) over the Landsat 8 period.This normally represents permanent water.

Coastline Extraction – Zandmotor

Area

get cloud-free images

extract boundary

interpolate

SRTM 30m

•https://ee-api.appspot.com/

Get an Image

Pick your: projection, resolution, bands, bounding-box, visualization Access as: Web map, KML, GeoTIFF

Global-scale Algorithm Processing

Get an Image Apply an algorithm to an image

Library functions or script your own.

Global-scale Algorithm Processing

Get an Image Apply an algorithm to an image Filter a collection

Time, Space & Metadata search

Global-scale Algorithm Processing

Get an Image Apply an algorithm to an image Filter a collection Map an algorithm over a collection

N → N

Global-scale Algorithm Processing

Get an Image Apply an algorithm to an image Filter a collection Map an algorithm over a collection Reduce a collection

N → 1 or N → M

Global-scale Algorithm Processing