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TerraViva! SEDAC

• Software produced by ISciences LLC based in Ann Arbor MI

• Provides visualization of SEDAC and remote sensing/ biophysical datasets in integrated desktop application

TerraViva! SEDAC Features

• Ease of use for non-GIS specialists, yet includes many GIS capabilities

• Global data viewing engine lets users examine hundreds of variables• A library of maps by theme: climate, population distribution, land

cover, physical geography, and more• Support for rendering maps in more than fifteen different geographic

projections• Create cross-tabulations through spatial overlays (e.g. land cover

class area by country)• Gazetteer geographic locator can pinpoint cities, states, provinces,

countries, water bodies, and weather stations• Create variables from spatial data for statistical analyses• Create customized maps for export to Word, Powerpoint

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Map Created in TV! SEDAC

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Evergreen Needleleaf Forest

Evergreen Broadleaf Forest

Deciduous Needleleaf Forest

Deciduous Broadleaf Forest

Mixed Forests

Closed Shrublands

Open Shrublands

Woody Savannas

Savannas

Grasslands

Permanent Wetlands

Croplands

Urban and Built-Up

Cropland/Natural Vegetation Mosaic

Snow and Ice

Barren or Sparsely Vegetated

(IGBP Water Bodies, recoded to 0 for MODIS Land Product consistency.)

Unclassified

Fill Value

IGBP Land Cover

TerraViva! SEDAC Features

• Unlike Google Earth and other internet map clients TV! SEDAC allows you to explore “real data”

• It’s like a full atlas on your laptop!

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Best of all, it’s free of charge!

Order it through http://sedac.ciesin.columbia.edu/tv

TerraViva! SEDAC Limitations

• Cannot (at present) import your own data– But there is a large library of additional data available free of charge at

www.terraviva.net

– You can also recommend data you would like to see incorporated to me at adesherbinin@ciesin.columbia.edu

• Occasional bugs that cause crashes– ISciences has pledged to fix provided users submit the bug reports

• Global raster data sets are at different scales and resolutions– Representation of coast lines and water bodies vary

– Cannot overlay layers to see where there are discrepancies

– Grid overlays are done at the resolution of the highest resolution data sets

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Best to use TerraViva! SEDAC for exploratory analysis, but to complete final spatial analysis in a full-scale GIS

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Tutorials Available at:http://www.youtube.com/SEDACTerraViva/

Installing the 2008 TerraViva! SEDAC Viewer

• Installation requires Administrative privileges on a microcomputer running the Windows NT, 2000, or XP operating system.

• The Administrator account should be used when running TerraViva on a computer for the the first time.

• May be installed on multiple computers from the DVD.

Starting TerraViva! SEDAC Viewer

After installation, click Start, Programs, TerraViva!, and TerraViva! SEDAC Viewer to begin.

The 2011 TerraViva! SEDAC Viewer window will appear with the message: “TerraViva is currently loading your data catalog. This may take a few minutes depending on network performance. We appreciate your patience.”

A new window will display the TerraViva! Base Map: GPW Population Density 2015 V3 (SEDAC).

Click OK if message indicates using saved configuration.

Click No if asked whether you want to upgrade to the latest software.

Today’s Tour

1. Basic TV! SEDAC functionality:– Toolbar

– Map Library

– Multiple Maps: pan & zoom, mouse over

– Map Projections

– Right Click on Map (magnify, get weather, etc.)

– Vector Data (administrative boundaries, points)

– Geostatistical Data: WDI data, PLACE data, and indicators

– Creating a Dynamic Map

– Gazetteer

– Documentation & Metadata

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Today’s Tour

2. Using TV! SEDAC for climate impacts & vulnerability assessment– IPCC climatological time series

– GISS and Hadley climate scenarios

– IPCC observed climate impacts (points data)

– Climatological hazards data (drought & cyclones)

– Change in runoff by 2080

– Sea-level rise

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Today’s Tour

3. Spatial Queries:– How many people live within 100km of a centroid?

– What is the area under different land cover classes by country?

– What is the average infant mortality rate in drought impacted portions of countries compared to non-drought impacted regions?

– How will runoff change within 100km of a dam (or by a user defined polygon)?

– How many people in each subnational unit are impacted by sea-level rise?

– What is the average population density in areas of greatest cyclone impact by subnational unit?

– How many people in each country will be impacted by significant changes (>20%) in rainfall runoff between now and 2080?

– Are poverty levels higher (measured by infant mortality rates) in areas likely to see >20% declines in precipitation?

– What is the area under irrigation within drought prone areas by country?

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100

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230,000 / sq km

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