Landsat Turns 45!

False colour image of Dallas, Texas. The first fully operational Landsat image taken on July 25, 1972, Image courtesy: NASA’s Earth Observatory

Landsat has celebrated forty-five years of Earth observation this week. The first Landsat mission was Earth Resources Technology Satellite 1 (ERTS-1), which was launched into a sun-synchronous near polar orbit on the 23 July 1972. It wasn’t renamed Landsat-1 until 1975. It had an anticipated life of 1 year and carried two instruments: the Multi Spectral Scanner (MSS) and the Return-Beam Vidicon (RBV).

The Landsat missions have data continuity at their heart, which has given a forty-five year archive of Earth observation imagery. However, as technological capabilities have developed the instruments on consecutive missions have improved. To demonstrate and celebrate this, NASA has produced a great video showing the changing coastal wetlands in Atchafalaya Bay, Louisiana, through the eyes of the different Landsat missions.

In total there have been eight further Landsat missions, but Landsat 6 failed to reach its designated orbit and never collected any data. The missions have been:

  • Landsat 1 launched on 23 July 1972.
  • Landsat 2 launched on 22 January 1975.
  • Landsat 3 was launched on 5 March 1978.
  • Landsat 4 launched on 16 July 1982.
  • Landsat 5 launched on 1 March 1984.
  • Landsat 7 launched on 15 April 1999, and is still active.
  • Landsat 8 launched on 11 February 2013, and is still active.

Landsat 9 is planned to be launched at the end 2020 and Landsat 10 is already being discussed.

Some of the key successes of the Landsat mission include:

  • Over 7 million scenes of the Earth’s surface.
  • Over 22 million scenes had been downloaded through the USGS-EROS website since 2008, when the data was made free-to-access, with the rate continuing to increase (Campbell 2015).
  • Economic value of just one year of Landsat data far exceeds the multi-year total cost of building, launching, and managing Landsat satellites and sensors.
  • Landsat 5 officially set a new Guinness World Records title for the ‘Longest-operating Earth observation satellite’ with its 28 years and 10 months of operation when it was decommissioned in December 2012.
  • ESA provides Landsat data downlinked via their own data receiving stations; the ESA dataset includes data collected over the open ocean, whereas USGS does not, and the data is processed using ESA’s own processor.

The journey hasn’t always been smooth. Although established by NASA, Landsat was transferred to the private sector under the management of NOAA in the early 1980’s, before returning to US Government control in 1992. There have also been technical issues, the failure of Landsat 6 described above; and Landsat 7 suffering a Scan Line Corrector failure on the 31st May 2003 which means that instead of mapping in straight lines, a zigzag ground track is followed. This causes parts of the edge of the image not to be mapped, giving a black stripe effect within these images; although the centre of the images is unaffected the data overall can still be used.

Landsat was certainly a game changer in the remote sensing and Earth observation industries, both in terms of the data continuity approach and the decision to make the data free to access. It has provided an unrivalled archive of the changing planet which has been invaluable to scientists, researchers, book-writers and businesses like Pixalytics.

We salute Landsat and wish it many more years!

Pixalytics: Five Years & Thriving!

Background Image: Sutichak Yachaingham / 123 Stock Photo

The start of June marked the five-year anniversary of Pixalytics!

For a small start-up business, like ours, five years is an important milestone. Depending on which you report you believe only around 50%, or even 40%, of new small business survive their five years! So we should definitely celebrate the fact that we’re still here!

The last twelve months have been successful for us. Our key highlights have included:

  • Continuing to grow our income year-on-year
  • Expanded our team to five, soon to be six, employees – which is a 100% increase over the last year!
  • Moved to a new office on Plymouth Science Park
  • Part of a consortium developing a Drought and Flood Mitigation Service (DFMS) in Uganda.
  • Secured our first European Contract and so now we are exporters!

It has been a lot of hard work, but we’re really pleased with what we’ve achieved.

In a similar blog last year, we wrote about our target of releasing an innovative series of automated Earth Observation products and services. You’ll have noticed that this is not listed in our highlights, as despite our efforts we’ve not managed to do this … yet.

We have made significant progress with our eStore. We have a number of products almost ready to go, the product interface has been developed and we’re currently developing the front end eCommerce website. We’re intending to go live with flooding, turbidity and ocean colour products. So watch this space, things will be happening later this year – we hope!

Launching the products is really the easy bit, the difficult part will be getting people to buy them and this a challenge which firms much larger than us are still to effectively solve. As a small business we tend to market through our website, social media and the odd exhibition. However, we’ll need to come up with some new cost-effective innovative ideas for our eStore if it is to be successful. We’re also participating in Europe wide projects established by EARSC and the Copernicus World Alliance looking at ways of developing the market and promoting Earth Observation products and services.

For the last couple of years we’ve quoted a phrase from ‘Worstward Ho’, a monologue by Samuel Beckett which is ‘Ever tried. Ever failed. No matter. Try Again. Fail again. Fail better.’

This sums up our approach. We try things. If they don’t work out, we try something else. It’s worked okay so far.

Before we leave our five year celebration, we wanted to take the opportunity to thank all of the people who’ve helped us along our journey, including the readers of our blog.

Let’s hope we’re still here in another five years!

World Oceans Day

Phytoplankton Bloom off South West England. Acquired by MODIS on 12th June 2003. Data courtesy of NASA.

June 8th is World Oceans Day. This is an annual global celebration of the oceans, their importance and how they can be protected for the future.

The idea of a World Ocean Day was originally proposed by the Canadian Government at the Earth Summit in Rio in 1992. In December 2008 a resolution was passed by United Nations General Assembly which officially declared that June 8th would be World Oceans Day. The annual celebration is co-ordinated by the Ocean Project organisation, and is growing from strength to strength with over 100 countries having participated last year.

There is a different theme each year and for 2017 it’s “Our Oceans, Our Future”, with a focus on preventing plastic pollution of the ocean and cleaning marine litter.

Why The Oceans Are Important?

  • The oceans cover over 71% of the planet and account for 96% of the water on Earth.
  • Half of all the oxygen in the atmosphere is released by phytoplankton through photosynthesis. Phytoplankton blooms are of huge interest to us at Pixalytics as despite their miniscule size, in large enough quantities, phytoplankton can be seen from space.
  • They help regulate climate by absorbing around 25% of the CO2 human activities release into the atmosphere.
  • Between 50% and 80% of all life on the planet is found in the oceans.
  • Less than 10% of the oceans have been explored by humans. More people have stood on the moon than the deepest point of the oceans – the Mariana Trench in the Pacific Ocean at around 11 km deep.
  • Fish accounted for about 17% of the global population’s intake of animal protein in 2013.

Why This Year’s Theme Is Important?

The pollution of the oceans by plastic is something which affects us all. From bags and containers washed up on beaches to the plastic filled garbage gyres that circulate within the Atlantic, Pacific and Indian Oceans, human activity is polluting the oceans with plastic and waste. The United Nations believe that as many as 51 trillion particles of microplastic are in the oceans, which is a huge environmental problem.

Everyone will have seen images of dolphins, turtles or birds either eating or being trapped by plastic waste. However, recently Dr Richard Kirby – a friend of Pixalytics – was able to film plastic microfibre being eaten by plankton. As plankton are, in turn, eaten by many marine creatures, this is one example of how waste plastic is entering the food chain. The video can seen here on a BBC report.

Dr Kirby also runs the Secchi Disk project which is a citizen science project to study phytoplankton across the globe and receives data from every ocean.

Get Involved With World Oceans Day

The world oceans are critical to the health of the planet and us! They help regulate climate, generate most of the oxygen we breathe and provide a variety of food and sources of medicines. So everyone should want to help protect and conserve these natural environments. They are a number of ways you can get involved:

  • Participate: There are events planned all across the world. You can have a look here and see if any are close to you.
  • Look: The Ocean Project website has a fantastic set of resources available.
  • Think: Can you reduce your use, or reliance on plastic?
  • Promote: Talk about World Oceans Day, Oceans and their importance.

Beware of the Bluetooth Gnomes and Other Stories from GISRUK 2017

Gorton Monastry, GISRUK 2017

The 2017 GIS Research UK (GISRUK) Conference took place last week in Manchester, and Pixalytics sponsored the Best Early-Career Researcher Prize.

I was looking forward to the event, but I nearly didn’t get there! I was planning to catch the train up from London on Wednesday. However, the trackside fire at Euston station put paid to that, as my train was cancelled. Instead I was at the station bright and early on Thursday morning.

The first presentation I saw was the inspiring keynote by Professor Andrew Hudson-Smith. He talked about ‘getting work out there and used’ and using the Internet of Things to create a ‘census of now’ i.e., rather than having census data a number of years out-of-date, collect it all of the time. Personally, I also enjoyed hearing about his Bluetooth gnomes in Queen Elizabeth Olympic Park, which talk to you about cyber security. A visit to his gnomes is definitely on my list for the next spare weekend in London!

I spent the rest of the afternoon in the Infrastructure stream of presentations where there were talks on spatially modelling the impact of hazards (such as flooding) on the National Grid network, human exposure to hydrocarbon pollution in Nigeria, deciding where to site, and what type of, renewable energy and investigating taxi journeys.

In the evening, the conference dinner was at ‘The Monastery’, also known as Gorton Monastery. Despite the name, it was actually a friary built by the Franciscan monks who travelled to Manchester in 1861 to serve the local Catholic community. It was one of the first churches to be completed by the Franciscans in England after the Reformation. It became derelict in the mid 1990’s and ended up on the World Monuments Fund Watch List of 100 Most Endangered Sites in the World. Since then it has been restored and is used as a spectacular community venue.

Friday started with the morning parallel sessions, and I picked ‘Visualisation’ followed by ‘Machine Learning’. Talks included ‘the Curse of Cartograms’ (and if you don’t know what these curses are, have a look here!), land-use mapping and tracking behaviour at music festivals using mobile phone generated data – which won the best spatial analysis paper. However, my favourite talk was given by Gary Priestnall on the projection augmented relief models, which use physical models of a location’s terrain that are then overlaid with imagery/videos shown using a projector. The effect was fantastic!

Our closing keynote, ‘The Great Age of Geography 2017’, was from Nick Crane, known to UK TV viewers as the ‘map man’. He reflected on the role of geographers throughout history and then into the future. He equated the breakthrough in printing, from wood blocks to copper plates that could be engraved in more detail and updated, to today’s transition from analogue to digital.

The conference finished with the awards. I was delighted to present Alyson Lloyd and James Cheshire with the Best Early-Career Researcher Prize for their presentation on ‘Challenges of Big Data for Social Science: Addressing Uncertainty in Loyalty Card Data’. Unfortunately, as it was on Wednesday afternoon, it wasn’t one I’d seen personally. However, I’ve downloaded the conference paper, available from here, and I’m look forward to reading it.

It was an excellent conference, and I was really enjoyed my time in Manchester. Looking forward to GISRUK 2018!

Brexit Biting for UK Space Industry

Artist's rendition of a satellite - mechanik/123RF Stock Photo

Artist’s rendition of a satellite – mechanik/123RF Stock Photo

UK companies involved in European Commission space programmes face an uncertain future according to media reports over the last week. The Financial Times reported that the European Commission wanted two key clauses in the contracts for work on the next part of the €10 bn Galileo Satellite Navigation System. These would allow the Commission to:

  • Cancel the contracts, without penalty, of any supplier who is no longer based in an European Union (EU) member state; and then
  • Charge that supplier all costs associated with finding their replacements.

Clearly, this poses a huge risk to UK companies given the fact that the UK has indicated its intention to leave the EU in 2019 by triggering Article 50. We wrote about the potential impacts of Brexit last year, and whilst we did pick up concerns over Galileo we didn’t see this coming!

Should the UK Space Industry be concerned?
Yes!

Despite reports to the contrary, this does not mean we are leaving the European Space Agency (ESA). We are very much remaining part of ESA, something that was confirmed at the ministerial in December. This solely relates to programmes owned, and funded, by the European Union (EU). However, it is concerning for two key reasons:

  • Anyone who has tried to negotiate contract terms with large governmental organisations will be aware that it tends to be a binary take it or leave it scenario. Therefore, if these clauses are in the contract, then it is highly likely companies will have to sign up to them to get the work.
  • It may not just be Galileo, the Copernicus Programme could be next. Copernicus is also an EU programme, and therefore it has to be a possibility that they may apply the same clauses to future Copernicus tenders. Galileo isn’t something Pixalytics is involved with, but if this was extended to Copernicus we’d be potentially impacted and would need to make choices.

What Can UK Companies Do?
The options are limited:

  • Bid anyway! Accept the potential financial risk, or hope that it will get resolved within the various Brexit negotiations. Given the size of these contracts, it will be a brave CEO who goes down this route.
  • Not bidding for any Galileo contract is probably the financially prudent option, but equally it removes a significant revenue stream.
  • Move to another European Country. I think there will be a number of companies who will be looking at moving some, or all, of their operations to another EU member state.

Any Causes For Optimism?
Not really, but there are tiny strands of hope.

  • Security – A key issue with Galileo is security. Currently, all EU members have agreements on security and when the UK leaves the EU, it leaves that agreement. Of course, security is just one of hundreds of agreements the UK will be hoping to discuss with the EU through Brexit negations. If security agreements are reached with the UK, maybe the position will change.
  • UK Election – Whilst writing this blog, the UK Prime Minister has announced a General Election in June. Parliamentary changes may influence the type of Brexit we have, but again it is highly unlikely.

It was fairly obvious, despite the contrary political rhetoric, that Brexit would have huge consequences on the UK’s relationship with Europe.

The UK’s space industry looks as though it will be at the forefront of those consequences. Forget 2019, the bite of Brexit is being felt today!

Pixalytics Goes To Space … Well, Nearly!

Last week the Pixalytics name got lifted towards space! In a previous blog we described how we were supporting the Plymouth University Space Society launching a weather balloon.

After a number of attempts were thwarted by the wind and weather patterns of Plymouth, last Friday was the big day. A small band of the Space Society pioneers alongside myself and Howard from Salcombe Gin, spent half an hour battling to control a weather balloon in the wind as it was pumped full of gas and had a small Pixalytics branded payload attached including a Go-Pro Camera, balloon locator, various battery packs and a small bottle of Salcombe Gin. At the top of the blog is an image of the gin high above Plymouth.

Once we were ready, the balloon was carefully walked back a few paces, and then with our hearts in our mouths, it was launched! We watched it rise gloriously until it disappeared into the low cloud that was covering the city. For anyone who wants to see the launch, it was filmed and streamed on Facebook and the recording can be found here.

Once the launch euphoria had subsided, the Space Society team jumped into a car to follow the balloon towards the predicted landing site of Taunton. The payload had a device inside which when called replied with the balloon’s location to enable progress to be tracked. The balloon actually ended up around thirty miles to the east of the prediction, coming to rest back on Earth in Yeovil. Once they got close, the team had to ask an elderly resident for permission to look through her garden for the payload package. However, it was a success and the payload was retrieved!!

On examination of the footage, sadly the Go-Pro seemed to malfunction about 15 minutes into the flight and therefore we were not able to get full flight footage. However, this is the space industry and not everything goes to plan. Once you launch most things are out of your hands!

From the flight length and distance travelled the Space Society team estimate that the balloon went up above 32,000 m. Whilst that is only about one third of the way to the Karman line, which sits around 100,000m and is commonly viewed as the boundary between the Earth’s atmosphere and the outer space, it’s probably the highest point the Pixalytics name will ever get!

Readers will be aware that we do like the unusual marketing opportunity. We’ve previously had our name going at 100 miles per hour aboard a Caterham Formula One car, so who knows what might be next?

It was great to support local students with their adventure towards space, and hopefully it will inspire them to get a job in our industry and develop their own space career!

Supporting Uganda’s Farmers

Map of Uganda showing vegetation productivity. Underlying data is the MODIS 2014 NPP Product, MOD17 – Zhoa et al. (2005).

Uganda is a landlocked country of just over 240,000 square kilometres. Agriculture is a key element of the country’s economy and was responsible for 23% of gross domestic product in 2011 and almost half the country’s exports the following year. According to the Food & Agriculture Organisation of the United Nations, 80% of the population relies on farming for its livelihood.

It has an equatorial climate, with regional variations, although recent recurrent dry spells have impacted on crop and livestock productivity. Pixalytics is delighted to be part of a consortium led by the RHEA Group, working with the Ugandan Ministry of Water and Environment and local NGOs to develop a Drought and Flood Mitigation Service (DFMS) to give practical information to help local communities respond to the effects of climate change.

Using computer models populated with satellite, meteorological, water resources and ground based data an innovative Environment Early Warning Platform will be developed to provide Ugandan farmers, via local NGO organisations, with forecasts throughout the growing seasons to enable them to take actions to maximise their crop yield.

Pixalytics, along with fellow consortium member, Environment Systems, are responsible for the Earth Observation data in the project. We’ll be looking at variety of optical and radar data to provide information about flood and drought conditions alongside crops and their growing conditions.

The project should benefit local communities by:

  • Improving the ability to forecast and mitigate droughts and floods on a local actionable scale.
  • Allowing NGOs to target resources saving time, money and lives.
  • Allowing farmers to improve their lives and better protect their livestock and crops.

Alongside ourselves, and RHEA Group, our consortium includes Environment Systems, Databasix, AA International, AgriTechTalk International, HR Wallingford, UK Met Office, Mercy Corps, and Oxford Policy Management. We will also work with international partners, including the Uganda Government Ministries, Kakira Sugar Company, and the NGO Green Dreams/iCOW. The first of a number of visits to Uganda took place last week, where we had the opportunity to make lots of local contacts and meet some of those whom we hope to benefit from this work.

This work is part of the UK Space Agency’s International Partnership Programme and ours is one of 21 projects chosen to provide solutions to local issues in counties across Africa, Asia, Central and South America.

This is a really exciting project to be involved with, and we’re looking forward to providing useful information to local farmers to allow them to take real and meaningful action to enhance the productivity, and protection, of their livestock and crops.

Outstanding Science!

It’s British Science Week! Co-ordinated by the British Science Association (BSA) and funded by the UK Government through the Department for Business, Energy and Industrial Strategy, it’s a celebration of science, engineering, technology and maths – often referred to as STEM.

The week runs from 10th to the 19th March which technically makes it a ten day festival – a slightly concerning lack of precision for a celebration of these subjects! There are events taking place all over the UK, and you can see here if there are any local to you. For us, there are nine events taking place in Plymouth. Highlights include:

  • Be a Marine Biologist for A Day running on the 16th and 17th at the Marine Biological Association
  • Science Week Challenge – Cliffhanger: On 17th of March teams of students from Secondary Schools across Plymouth will compete to design and build a machine to solve a problem.
  • Dartmoor Zoological Park running a STEM careers day. Although, sadly you’ve already missed this as it took place on Tuesday!

All of these, and the many others across the country, are fantastic for promoting, educating and inspiring everyone to get involved with STEM subjects and careers. Regularly readers know this is something that we’re very keen on at Pixalytics. Eighteen months ago we published a book, ‘Practical Handbook of Remote Sensing’, which aims to take complete beginners through the process of finding, downloading, processing and visualising remote sensing satellite data using just their home PC and an internet connection.

We were delighted to find out recently that our book has been chosen an Outstanding Academic Title (OAT) of 2016 by Choice, a publication of the Association of College & Research Libraries, a division of the American Libraries Association.

OAT’s are chosen from titles reviewed in Choice over the last year, and selected books demonstrate excellence in scholarship, presentation and a significant contribution to the field. The reviewer’s comments are integral to this process. Someone from San Diego State University reviewed our book last August and their comments included:

  • ‘a unique approach to the presentation of the subject’
  • ‘This book is successful in achieving its aim of making the science of remote sensing accessible to a broad readership.’
  • ‘Highly recommended. All library collections’

OAT’s are a celebration of the best academic books and Choice selected 500 titles out of 5,500 they reviewed last year. We’re very proud to have been included in this list.

Everyone can, and should, get involved in science. So why not go to one of the British Science Week events local to you, or if not you could always read a book!

Plymouth Student’s Shot at Space!

From left to right: Fraser Searle (President), Sam Kennerley (Secretary) of Plymouth University Space Society, with the equipment to launch the balloon.

Plymouth University’s Space Society plans to send a small bottle of gin ‘into space’ attached to a weather balloon at the end of March.

The aim is to send the bottle 100,000 feet above the Earth, equivalent to 30 kilometres, and then bring it back safely. On its return, in true student fashion, they intend to use it to drink a few ‘space cocktails’!

The idea for launching the weather balloon began last summer when Fraser Searle and Nick Hardacre, who lead the Space Society at Plymouth University, were looking for ways to create interest in space in the local community. They originally hoped to send a bottle of local gin up, but soon found the challenges of working in a sub zero environment. It would have taken a balloon one and half times the size of the current one and double the volume of helium, so they changed to the shot glass.

They’ll also be attaching cameras and tracking equipment to the six metre diameter balloon to record and monitor the journey. The students have a roller coaster of emotions at the moment as Fraser explained, “We’re feeling excited, but I do get waves of nerves as to whether the glass and the cameras will return unharmed. We’re also wondering if the pictures and videos will be clear.”

Technically, the weather balloon won’t get into space. It should reach the upper half of the stratosphere, an area known as near space. As this area stretches from 20km to 100km above the Earth, ‘near’ is a relative term.

Pixalytics got involved with the project before Christmas, when we helped with sponsorship to enable the students to finish purchasing the necessary equipment. We’re also hoping to provide support in reviewing and interpreting the images the cameras collect on the journey. It’ll be interesting to compare what the weather balloon sees, with what various satellite imagery shows.

We’re strong supporters of events that encourage students and early career scientists to enhance their understanding of remote sensing, space and science. We sponsor student conferences and prizes that take place in the UK. So, it’s fantastic to get involved in something much closer to home.

Launching a weather balloon requires permission from the Civil Aviation Authority, and is also highly weather dependent. A planned launched at the end of January had to be abandoned as the balloon was likely to end up in Portsmouth or Calais harbour.

However, the team have once again got the relevant permissions to try again this coming week. The exact launch date will depend on the wind and weather patterns around Plymouth, which are always fairly turbulent. Fraser said, “We’ll be glued to the online predictors to find a launch slot.”

This is great local project for Plymouth, and we’re pleased to be able to support it. We have our fingers crossed for suitable weather, but only time will tell if they manage to conquer space!

Goodbye to EO-1

Hyperspectral data of fields in South America classified using Principle Components Analysis. Data acquired by Hyperion. Image courtesy of NASA.

In contrast to our previous blog, this week’s is a celebration of the Earth Observing-1 (EO-1) satellite whose death will soon be upon us.

EO-1 was launched on the 21st November 2000 from Vandenberg Air Force Base, California. It has a polar sun-synchronous orbit at a height of 705 km, following the same orbital track as Landsat-7, but lagging one minute behind. It was put into this orbit to allow for a comparison with Landsat 7 images in addition to the evaluation of EO-1’s instruments.

It was the first in NASA’s New Millennium Program Earth Observing series, which had the aim of developing and testing advanced technology and land imaging instruments, particularly related to spatial, spectral and temporal characteristics not previously available.

EO-1 carries three main instruments:

  • Hyperion is an imaging spectrometer which collects data in 220 visible and infrared bands at 30 m spatial resolution with a 7.5 km x 100 km swath. Hyperion has offered a range of benefits to applications such as mining, geology, forestry, agriculture, and environmental management.
  • Advanced Land Imaging (ALI) is a multispectral imager capturing 9 bands at 30 m resolution, plus a panchromatic band at 10 m, with a swath width of 37 km. It has the same seven spectral bands as Landsat 7, although it collects data via a different method. ALI uses a pushbroom technique where the sensor acts like a broom head and collects data along a strip as if a broom was being pushed along the ground. Whereas Landsat operates a whiskbroom approach which involves several linear detectors (i.e., broom heads) perpendicular (at a right angle) to the direction of data collection. These detectors are stationary in the sensor and a mirror underneath sweeps the pixels from left to right reflecting the energy from the Earth into the detectors to collect the data.
  • Atmospheric Corrector (LAC) instrument allows the correction of imagery for atmospheric variability, primarily water vapour, by measuring the actual rate of atmospheric absorption, rather than using estimates.

The original EO-1 mission was only due to be in orbit only one year, but with a sixteen year lifetime it has surpassed all expectations. The extension of the one year mission was driven by the Earth observation user community who were very keen to continue with the data collection, and an agreement was reached with NASA to continue.

Psuedo-true colour hyperspectral data of fields in South America. Data acquired by Hyperion. Image courtesy of NASA.

All the data collect by both Hyperion and ALI is freely available through the USGS Centre for Earth Resources Observation and Science (EROS). At Pixalytics we’ve used Hyperion data for understanding the capabilities of hyperspectral data. The two images shown in the blog are a subset of a scene acquired over fields in South America, with image to the right is a pseudo-true colour composite stretched to show the in-field variability.

Whereas the image at the top is the hyperspectral data classified using a statistical procedure, called Principle Components Analysis (PCA), which extracts patterns from within the dataset. The first three derived uncorrelated variables, termed principle components, are shown as a colour composite.

Sadly, satellites cannot go on forever, and EO-1 is in its final few weeks of life. It stopped accepting data acquisition requests on the 6th January 2017, and will stop providing data by the end of February.

It has been a great satellite, and will be sadly missed.