Taking drone photos from the sea ice Jun 6 2023

This article is part of the series “2023-06: Arctic Ocean cruise KPH”.

Yesterday night we started our first ice station on our research expedition. Today I was on the sea ice twice. Once just before lunch to calibrate the compass of the drone and then in the afternoon to really fly it.

After informing the bridge to deactivate the radar to avoid interferences I took 149 pictures in 80 metres height with the camera showing straight down. I had to switch batteries in the middle. The computer will need hours to stitch together the images. Only then I do know if I covered the whole ice station area or if there are “holes” – areas that I forgot. It’s not so easy when you fly a drone manually and do not have a lot of practise. In addition to that the ice is drifting and so the GPS positions constantly change.

I took some “normal” drone shots as well. The photo I just want to show here I took in the beginning to check if the manual exposure was correct. This photo is slightly edited but I hope that I do not have to edit all 149 photos for the stitched “orthophoto”. I’ll know later, either in the evening or tomorrow morning. Then I’ll write a bit more.

The next images show first some of the researchers and me – with the red helmet – in the foreground. The other image is a map that shows where we are right now.

Map with our current position (2023-06-06)

Taking orthophotos on Kvaløya May 15 2023

That’s me, nine days ago, near a parking place by the lake Finnvikvatnet on the island Kvaløya.

I just got a drone from the Norwegian Polar Institute, a DJI Mavic Pro 2. Since it is forbidden to fly a drone in Tromsø (too near to the airport) I chose a place on Kvaløya to check out the drone and practise a bit.

What you may expect from drone flying is photos like this:

What I actually did that day was taking a bunch of photos like these:

Back at home let the computer do some heavy work. That’s the result:

What I wanted to achieve is creating a so-called orthophoto. That is a stitched image that also contains geographical information. You need quite a lot of photos to get good results. In the map above it is only 9 photos and 11 photos in two distinct groups.

I used two softwares: First OpenDroneMap to create the orthophoto and then QGIS, an open source Geographic Information System, to present the orthophoto in a geographical context.

This afternoon I took a trip to Kvaløya again, this time to the way to Sommarøya and stopped by the lake Kattfjordvatnet. Here I pulled up the drone to an altitude of 80 metres and tried to navigate a rectangular zig-zag pattern with a lot of overlapping between the images. Beside of the fact, that the images are underexposed (and I was too lazy to correct them) I’m quite content with the result. The first image is an oblique shot, the second image is an orthophoto calculated from about 80 images and then placed into QGIS.

Today’s orthophoto from the eastern part of Kattfjordvatnet

Plan for the next two weeks: getting more practise!

Kronprins Haakon in between May 11 2023

Yesterday

Yesterday I took the car to the northern tipp of Tromsøya to get my tyres changes. When I drove back I had my studded “Nokian Hakkapeliitta 9” tyres in the car’s back and brand new summer tyres on the rims. On my way back I passed the port and there lay the ice breaker Kronprins Haakon.

I continued to the shopping mall Jekta to fetch a photo collage printed on a hard foam board. The photo show scenes from the expedition I joined last year with the very same icebreaker Kronprins Haakon (KPH or even KH for the lazy ones). At time it stands on my dresser. With 75×50 cm it’s larger than expected.

Today

Today I took the car to the port, parked it outside, went to kai 25 and went on board of Kronprins Haakon. Not to join a cruise but to meet my colleague M. on the bridge. Nice to be there anyhow. M. already had installed some GIS software plugins on a computer there. I configured another plugin on my computers that can show the ship’s position in realtime together with other map layers.

In three weeks

The ship’s position in realtime however works only when my computer is connected to KPH’s network. No use to have it home. But in three weeks I’ll enter the vessel again, then in Longyearbyen. Then I’ll join my second arctic cruise with the Norwegian Polar Institute that will lead us to the Arctic Ocean north of Svalbard. There’s a lot to do and I’m nervous because I have some tasks there that I never did before but I’m looking forward to it very much.

Arctic preparations Apr 29 2023

Have a look at these two images. They have something in common.

Both are related to my participation in the Arctic Ocean cruise in June. After the Nansen legacy cruise last year this will be my second scientific cruise to the Arctic with the Norwegian Polar Institute. And this time I’ve got extra tasks.

1. Drone flying

A scientist asked if I could fly a drone to map the ice stations. I didn’t have any experience in drone flying so I bought a private one to practise some weeks ago. In addition to that I made the Norwegian online course in drones (class A1 and A3) and the exam. Now I’m registered as a drone pilot in Norway, both in private and for the Norwegian Polar Institute. That was the easy part.

The interesting part starts when I shall take photos with latitude and longitude information from a drifting ice floe. But I’m not there yet (and quite happy that I have another month of preparation).

The drone photo above was taken in Norway. In Sweden it is a lot of paperwork to get permission for the publication of photos, especially when they show the sea as well. In Norway this is not the case, as long as you know the legal rules and restrictions.

2. Ice chart and weather info

To help both the cruise leader and the crew with planning it will be my job to provide them with current information. That’s ice charts coming from a SAR satellite and weather forecasts for e.g. wind, temperature and pressure. The data will be presented using the Open Source Geographic Information System QGIS. The screenshot above is just from a small learning session where I loaded in quite unrelated data as a topographical map of Svalbard, an ice chart from two days ago and current wind information.

The interesting thing will begin when we head north, leaving Svalbard behind. Then we do not have internet access anymore except sending and receiving emails through the slow and expensive Iridium network. So I cannot use all the cool QGIS plugins to gather data directly but I’ll have to send data requests per email and then receive the data later. This will be both interesting and challenging. I’m somewhere in the middle of being quite excited and pretty nervous.

Anyhow I wanted to have jobs and tasks and I’m glad I get the opportunity in a more active role than last year, were I was more like an observer. I guess, I’ll learn a lot.

Arctic Ocean, soon I’ll come!

Like ice in the springtime … Apr 12 2023

In the rare cases where the temperature rises above 0 °C something special happens: Ice and snow melt and become a liquid known as „water“. One of these rare occasions is called „spring“ and this is what has started happening right now. In these days many things happen that are related to ice, snow, and water.

8 April: Vattenplasket in Malå

Last Friday Annika and I visited our friends Lasse and Martine in Kusfors and stayed over. Lasse is a journalist and had a job in Malå the next day. There was a very special ski competition named “Vattenplasket” – the water splash. A ski hill and instead of a finish line a large basin with knee deep water. Is it possible to downhill on ski or snowboard and have enough momentum to cross the water? Let’s see:

Most of the competitors failed, two actually managed it. True sportsmanship showed a small boy that did not get enough momentum with his sled and just walked into the water. Kudos!

9 April: almost a kayak tour

On Sunday Annika and I tried to do another kayak tour. Five days ago the ice was stable, this day it had got holes and was not reliable anymore. While Annika stood on safe ice I tried to cross the old ice to the island but **splash!** broke through several times. No biggie, the water is quite shallow and we have drysuits but it is exhausting. When Annika started breaking through as well, we decided to return. Another time …

Almost a kayak tour: Me in the water (Photo: Annika Kramer)

10 April: winter bath

Finally. Annika and I. Twice. And then: sitting on the rocks in the wet bathing clothes without freezing because the sun is so warm. Springtime!

Winter bath in Vitskärsudden (Photo: Annika Kramer)

12 April: ice work

This is a piece of ice seen from the side. You can see the different horizontal layers that accumulated over time.

This is however no glacier ice nor Arctic sea ice. It is a piece of ice from our way to our house. Annika and I have been chopping the ice bit by bit for many days and today was the day: the way to the car and the road is free of ice and snow.

12 April: another “almost” kayak tour

There are other parts that are free of ice: Most of the weak ice between land and the island Lillskär is gone. After work I tried to paddle around the islet. We had low water (-30 cm) and some of the stable ice was grounded while large parts of the sea were open.

The first part was easy but when I almost rounded the island I came into an ice field. I already had seen it before starting the tour and thought I could paddle through. In theory this was possible, but the wind and the layers of ice made it near to impossible to steer the kayak.

So I got off the boat, jumped into the 60 cm deep water and while standing turned the kayak back to course. Now I could continue my island circumnavigation. Anyhow I consider exiting the kayak on the tour cheating, that’s why I say: I almost circumnavigated Lillskär today.

Even though the ice floes may have been 7–8 cm thick you couldn’t stand on the ice any longer. The ice was “rotten”. Many tiny vertical channels had weakened the ice and made it sensible to vertical stress. You can see it on the next photo. The piece on ice is standing, the bottom part of the ice floe is on the left.

A short ski tour to the cabin Trollvassbu Feb 11 2023

Prelude

What do you need to go skiing? (A) snow? Or (B) a shopping cart?

This week started warm, rainy and very windy. On the Norwegian sea a full storm was raging. Boat traffic was cancelled, bridges and schools closed. Here’s a Norwegian article: Uværet stopper fergetrafikk og skoler stengt – NRK Nordland.

Tromsø however is quite protected by the surrounding mountains. I saw this shopping card was thrown on the empty parking lot, nothing more. The ice was probably more dangerous but I have good spikes for my boots.

Two days ago the temperatures had dropped and snow was falling gently when I went to work. Yesterday it was still snowing, but less gently as you can see on the second image.

Skiing

Since then round 30 cm of snow had fallen. I packed ski and other stuff into my car and drove to a parking place on the mainland. It took a while to go there. First it’s 40 km and then there were some heavy snow showers. Sometimes it was hard to follow the road and I almost went through a red traffic light because it was snowed in.

Then I reached the parking place. Is it cleared? Well, I don’t know, I only see white. Let’s try …

I tried to back but it was obvious, that the car got stuck in a snow drift. The problem was not only the packed snow under the car, but also a layer of ice under the snow. The tyres just were spinning. So I had to dig out my car and decided to do it before skiing. 15 minutes warm-up with my snow spade, then the car was free.

There was another car, otherwise I was alone. I dressed for the tour and started. Plan for today: the cabin Trollvassbo, just 4 km away. It started snowing and wind increased. Mountains and other features were invisible. The snow was loose and my skis sank 15 cm with each step. But I was lucky. The pale spot in the distance turned out to be three women, that had stayed overnight in Trollvassbu. Following their ski track was of course not much less exhausting and I hadn’t to care much about navigation. Nice!

After two kilometres the track was lost in nothing. Snow and wind had filled the track. Sometimes it cleared up a bit and I could see the mountains, sometimes a new snow shower approached.

But then, after 3½ km I spotted it – the cabin. Somewhere behind the drifting snow.

Another 800 metres and I arrived. The cabins of the Norwegian tourist association DNT are locked, but luckily all with the same key – which I had with me today. So I could take a rest inside.

Oh, lovely! The cabin was cosy and still warm. I took a frugal lunch – water and crisp bread. I regretted, that I didn’t took some real lunch with me, here where I could use the gas stove. Anyhow I stayed there for almost an hour.

I took a photo of the snow drift behind the cabin and then started my way back to the car. Just while I took out the camera to take a picture of a mountain a snow cloud approached. Half a minute later the mountains was gone. Another half a minute later I skied through a heavy snow shower.

I put off my backpack to firmly tie up my snow spade and continued. Anyhow this was last stormy shower. Then it cleared up a bit and I could see the mountains again. I was more easterly than on the way there. Here the terrain was more sheltered from the wind. This means less wind but also deeper snow. Since there was no track left I skied through 20 cm of loose snow. So although I skied down a bit I was hardly any faster than on the way there. But that doesn’t matter, it’s not a competition.

The whole ski tour took less than 3½ hours including the break. Plus 15 minutes of shovelling. Plus 1½ hours of car driving. It’s near to impossible to reach all these great places round Tromsø by public transport, especially on weekends.

Warmly recommended if you have a car and want to have an easy tour without steep slopes. Perhaps you’ll get more friendly weather.

A starry night Jan 30 2023

Today evening I met with my colleague Marika. We took the car to a road on the mainland looking for a dark place to spot the comet C/2022 E3. And we did, although it was only a weak, soft spot high up in the sky. I was much too impatient to take photos. I know that my equipment is not made for astrophotography.

But I was glad to be outside under the stars, watching the moonlit snowy mountains and the frost covered trees that glittered brightly when a car passed. With -15 °C it was surprisingly cold, almost ten degree colder than in town.

Of course I did take some other photos, just from the surroundings.

Now I hope for more starry nights.

Aurora Lightshow in Tromsø Oct 4 2022

Hooray – finally the polar light and I were awake the same time!

It’s not the first polar light this season. But either there were clouds or it vanished when I was at the bay Telegrafbukta for taking pictures or I just slept. Today however I was lucky and was at the right place at the right time.

October aurora at the Telegrafbukta in Tromsø

Kayaking into the dark Sep 22 2022

It seems, that summer is over. It’s less a matter of temperature but light. Next night will be autumnal equinox and today’s sunset was already at 18:47. Tromsø has almost the same longitude as Budapest.

Anyhow the Thursday paddling of Tromsø Havpadelklubb – the Tromsø sea kayak association – still hold place today. Next week will be the last time for this season. Today we had perfect conditions: No waves, no wind and 10 °C. We had many a summer day worse than that here in Tromsø …

May I present, that is D5. It’s one of the many rental kayaks of the association and my standard choice. My own kayak is in Sweden.

Today we were 15 people heading to the island Grindøya on the other side of the sound between Tromsøya and Kvaløya. OK, let’s start …

First we paddled along the coast, then we started crossing the sound. From the boat houses to Grindøya it is round about 4 km.

This time we did not paddle round the island like in June or two weeks ago. Instead we headed for a beach at the northern tip and made a break there. I had a piece of soft chocolate cake with cashew nuts, a welcome leftover of the three day data management workshop that I joined this week. And while we stood or sat there it started getting dark.

Some of my fellow paddlers already had switched on their lights on the way to Grindøya, now we all illuminated our kayaks and ourself. It’s less about seeing but about being seen. There is commercial shipping on the sound. We prepared our kayaks and departed.

While we paddled back it got darker and darker. It’s really a special experience to paddle through the dark in a group. You hear the drone of the city, occasionally interrupted by an airplane or a motorcycle. But that’s far away. Our own sounds are near: soft conversation and the little noises of the paddle entering and leaving the surface of the sea. And since you see less and less, hearing becomes more and more present. And anyhow I tried to paddle as silent as possible not to disturb the quietness.

When we arrived at the boat houses of Tromsø Havpadelklubb it had become dark. The tour lasted only an hour and a half plus a half hour break. But the peaceful sound of kayaking calmly through the darkness lingers still in my ears.

Jämtland tour 22 – the glacier of Helagsfjället Sep 10 2022

This article is part of the series “2022-08: Jämtland and Trøndelag”.

It is 23 August, day 9 of our hiking tour through the mountains of Jämtland. Today we take another day off and I decide to try to reach the glacier of the mountain Helagsfjället. I don’t know how near I can get but I’ll see.

This glacier is the Sweden’s southernmost and parts of it are visible from the Helags fjällstation. You can even see the mark of the top (1797 m) which is round 750 metres higher than the cabins.

On my way up I meet three men heading for the top. I hear that it is easy to climb, even for children. Other hikers will confirm that later. Well, perhaps I’ll do that another time but today I want to touch the glacier.

I walk first up on across county, reach the main trail and follow it for a while. Then I turn right to follow a smaller path heading to the glacier. I reach a field with large rocks and boulders. Carefully I follow the cairns that mark a path until I stand in front of the first glacier tongue.

Time for a selfie!

I spot another glacier tongue. For coming there I have to climb over a rock outcrop. Mountaineers will laugh that I call it climbing but I’m more a hiker than a climber and as soon as I have to use both hands I call it climbing. The effort was rewarded. What an impressive view on the glacier!

I stand still for a while. First of all it is beautiful weather and then it is fascinating just to see the colours of the glacier changing while shady clouds pass by. And then I move again to take more pictures. And I drink some water and eat a bit of chocolate.

How long I stand there? I cannot say. I start my way back. My first view is on the radio station on the mountain Jalkedsåajja. This is where my sister and brother-in-law are today. But it is too far to spot if they are there right now.

While walking back I come to the small glacial lake that I already passed on my way up. Some people had written their names using stones. Wait – some people!? Only now I do realise that the whole area is covered with messages arranged by stones. An ancient social media stream – though without cat videos.

The whole tour took only three hours, with a lot of photographing and taking rests. If you plan to visit Helags you definitely should consider to give the glacier a visit. I keep my fingers crossed that you get nice weather, too.

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