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Friedrich Schiller University of Jena

Department of Geoinformatics, Hydrology and Modelling

Information Management for

The Future Okavango

Cornelis Vanderpost & Sven KralischFriedrich Schiller University of Jena

Okavango Research Institute

TFO Workshop Maun, October 11-13, 2011

Objectives

• Implementation & maintenance of an

Okavango Basin Information System (OBIS) for

– TFO partners

– Stakeholders in the region

• Scientific and technical objectives

– Implementation of OBIS

– Adaptation to user demands (data types, permission

management, services)

– Integration of existing data bases

– Interfaces to environmental simulation models

– Training for OBIS users

2TFO Workshop Maun, October 11-13, 2011

Data Management Demands

TFO Workshop Maun, October 11-13, 2011 3

Central data

storage

Ease of use

Modular structured

Flexible & scalable

Open source & open

standards

• ODIS was developed by the Okavango Research Institute to support the Okavango Delta Management Plan through access to data about the Delta for planning purposes.

• This was done by:

• Providing a central data access point.

• Ensuring compatibility of data formats

• Ensuring data integrity (correct, up-to-date, etc).

• A user friendly map viewing interface: ODIS

• and USER TRAINING.

ODIS was later upgraded to an on-line system with funding

from the Biokavango project: The ODIS website allows Data-

Searches, Interactive Mapping and Data Uploads by Users.

And a start was made under the OKACOM-TDA programme

to upgrade ODIS to a basin-wide system OBIS: OKAVANGO

BASIN INFORMATION SYSTEM.

http://odis.orc.ub.bw/odis/

• ODIS USER TRAINING will be used as a model

for OBIS user-training:

• user/stakeholder consultation in cooperation with

OKACOM and its partners

• hands-on workshops for problem solving.

River Basin Information System (RBIS)

7

RBIS

meta(Metadata)

map(Geodata)

sim(Models)

doc(Documents)

ts(Time series)

Storage Visualization Analysis Decision Support

Time series• measured and

simulated time series

• data source description

Metadata… based on ISO standards

for all datasets

Documents• text documents (PDF, …)

• pictures/movies

• raw/binary files

Geodata• user-defined,

interactive maps

• vector and raster data

• web-map services

Environmental Models• scenario management

• model management &

application

• indicator calculation for

decision support

ext


Geodata Management: RBISmap

• Geodata storage & visualization

• Based on UMN Mapserver/PostGIS

• OpenLayers for desktop-like behavior

• Link extension

8

Features, Layers, Maps

Non-spatial data



Time Series Management: RBISts

• Time series storage, visualization, processing

• Storage in database tables for flexible access

• Description of data source

(Station vs. Model)

• Focus on simulation model applications

– Gap detection / filling

– Data search by

• parameter type

• temporal resolution

• covered time interval

• station location

Permission Management and Logging

• Permission management for users and groups

based on:

– Access type (View, Download, Edit, Delete)

– Spatial location of accessed data

– Dataset ownership

• Write access and error logging

• Automated reports

10

ERROR

log

UPDATE

report



• Built on open-source software & open standards(Apache, PHP, Smarty, PostgreSQL, PostGIS, MapServer, OpenLayers, GDAL)

RBIS Architecture

Geodata

Applicati

on

Serv

er

HTTP, WFS, WMS, …

Data StorageClients

Timeseries

data

Metadata

Internet

OBIS:www.future-okavango.org/obis


OBIS Time Series Data

• Records from 17 climate

stations

• Climate elements:

• Precipitation

• Temperature

• Potential Evapotransp.

• Air Pressure

• Temperature (max)

• Temperature (min)

• Temperature (mean)

• Relative Humidity

• Sunshine

• Recording Time Step:

• Monthly

• Period of Measurement:

• varying

199 Measurement Stations with 203 Time Series Datasets

Climate StationsPrecipitation

StationsGauging Stations

• 162 Precipitation

Stations (IWR)

• Time Steps:

• Monthly

• In total 20 Gauging Station integrated

• Ground Observations (IWR) and Microwave

Satellite Observation (NASA AMSR-E data)

• Time Step:

• daily (NASA AMSR-E data)

• Monthly (IWR Data)

OBIS Geo Data (selection)

17

Topic

Cate

gory

Biota (10) Boundaries (8) Climate (11)

Economy (2) Elevation (9) Environment (15)

GeoscientificInformation (24)

Inland Waters (23)Society (1)

Transportation (4)

• Vegetation Units

• Eco regions

• Phytogeographic Units

• Vegetation Biomass…

• Countries

• Districts

• Provinces

…

• Monthly Average Precipitation

• Mean monthly temperature

• Global Geospatial Aridity Index

• Annual Potential Evapotranspiration Values

• Mineral Deposits

• Location of Mines• Contour Lines (100m, 200m)

• AfrHySRTM

• CGIAR-CSI-SRTM 90m (v.4)…

• Communal Convervancies

• Hunting Management Areas

• Protected Areas, RAMSAR sites

• Basin Soil Information

(e.g. SOTER, HSWD, FAO)

• Basin Geology (e.g. Provinces,

Units and Faults)

• Populated Places • Okavango River (Macro) Basin drainage network

• Okavango River (Macro) Basin – Subbasins

• Surface Water Features; Water Distribution Res.

• Okavango Active Catchment Area- Sub Basins

• Okavango Basin Wetlands

• Airfields

• Railroads

• Roads and Tracks

Farming (6)

• Veterinarian Game Fences

• Agricultural Research Stat.

2003 in Namibia

Imagery, base maps, earth cover (3)

• Ikonos/QuickBird Imagery

• Geologic Map of Angola – Digitized


OBIS Geo Data (selection)

18

Data Sources:• Projects

- The Sharing Water Project

- Environmental Protection and Sustainable Management of the Okavango River Basin

(EPSMO – Project; GIS Database)

- Hydrogeological Mapping Project Namibia (HYMNAM)

- European Space Agency GlobCover Project

• Publications- Mendelsohn, J.M. & El Obeid, S. 2003. Sand and Water: a profile of the Kavango

region of Namibia. Detailed description and analysis of the physical, human and

biological environment of Kavango. Compiled for the Ministry of Environment and

Tourism. Published by Struik, Cape Town.

- Mendelsohn, J.M. and El Obeid, S. 2004. Okavango River: the flow of a lifetime.

Comprehensive analysis and compilation of information on the Okavango River Basin

in Angola, Namibia and Botswana. Published by Struik, Cape Town

- Mendelsohn J, Jarvis A, Roberts C and Robertson T. 2002. Atlas of Namibia: A

portrait of the land and its people. David Philip Publishers, Cape Town.

• Responsible Organisationswww.future-okavango.org/obis


Next Steps

• Data import

• Service implementation

– Catalogue Web Service (CSW)

– Sensor Observation Service (SOS)

– Web Processing Service (WPS)

• Feature questionnaire

• User training & online tutorial
