Drylands Monitoring Week

Satellite images technologies, new data streams Dr. Fred Stolle

Conclusion • It is not the data (satellite) but what you do with it – Access and usability – What are the needs • Mapping: ad hoc or systematic • Monitoring: systematic • What indicators

– Computer power – Recognition of patterns – Data  information  action • Land managers/experts should focus on action. Need

Objective of this session

• Quick overview of new remotely sensed images and methods • Not to advocate its use for all and every purpose • Though new data streams do sometimes catalyze new uses

Landsat -8

SPOT Image now Airbus

SPOT Image now Airbus • Long existing dataset and continuing till 2024 • Very expensive. Okay for mapping… monitoring ? • Hardly used because of cost

• Recently- REDD+ - Now all Congo data free and other d

Sentinel • Sentinel-1 (1A&1B) C-band interferometric radar mission is an all-weather, day-and-night radar imaging • Sentinel-2 (2A&2B) is a high-resolution optical imaging mission for land services • Sentinel-3 (3A&3B) is for a global ocean and land monitoring mission which includes an altimetry instrument package. It provides data from the visible to thermal infrared at medium (e.g. 250 m) to low (e.g. 1000 m) spatial resolution for ocean colour, sea surface temperature and global land mapping. • The ESA Ministerial Council in 2011 will decide on the two other Sentinel missions: – Sentinel-4 - a GEO atmosphere monitoring based on Meteosat Third Generation, – Sentinel-5 - a LEO atmosphere monitoring based on post-EUMETSAT Polar System

RapidEye

RapidEye • One of the new satellite that can do monitoring • 5 m resolution • Can cover large areas

Digital Globe

After 3 month and 400,000 USD

First conclusion • Very high resolution. Great for high value mapping • Monitoring. …lucky • Not systematic

Planet Labs • 1st launch April 6th in Virginia, then 2 weeks later on Soyuz from Kazakhstan, April 19th, 2 more in August, • Now takes 4 hours to build one, with a week to get the parts. • Need to work out the automation…key when have 100 of them. •

Planet labs • In January 2014, delivered Flock 1, the world’s largest constellation of Earth-imaging In January 2014, we delivered Flock 1, the satellites,world’s made up of 28 ofDoves. Together with largest constellation Earth-imaging satellites, made up of 28 Doves. Together with subsequent launches, have launched 71 subsequent launches, we have launched 71 Doves, toward imaging thethe entireentire Earth, every Doves, toward imaging Earth, every day. day.

Skybox video -google • SKybox Imaging was founded on the premise that an ability to better understand these phenomena could fundamentally change the way humanity makes decisions on a daily basis • “Earth Observation 2.0, where satellites are simply sensors and the magic is in harnessing scalable computing and unbounded analytics to find answers to the world’s most important geospatial problems regardless of data source.

Drones

Drone

Urthecast • Strips of imagery 40km wide • UrtheCast’s 5-metre resolution camera will capture any location that the ISS passes over, generating large strips of 40km-wide imagery, 365 days a year.

Tomnod

Thus • Lots of flashy new satellites and data. • Don’t forget Drones • But what we need is mapping. Mapping = one snapshot in time to take stock of resource. Satellite for dryland high resolution and/or many bands. – We need that from global good

• Monitoring = repeat same image over and over again with clear frequency , and the most stable – Global Good

Conclusion • It is not the data (satellite) but what you do with it – Access and usability – What are the needs • Mapping: ad hoc or systematic • Monitoring: systematic • What indicators

– Computer power – Recognition of patterns – Data  information  action • Land managers/experts should focus on action. Need

GFW data combination

These one time data streams are stunning but useful ?

We need not data but information on state and changes