GeoLog

laboratory work

Imaggeo on Mondays: Air samples from afar

Imaggeo on Mondays: Air samples from afar

I’ve taken many photos on fieldwork, everywhere from Malaysia to Antarctica but this particular photo was taken in my ‘home’ lab at the University of East Anglia (UEA) in Norwich, UK. Atmospheric scientists collect air samples canisters such as these from around the world: from high altitude research aircraft (such as the Geophysica), long-term measurement time series (such as Cape Grim) or field campaigns in urban and rural environments.

At UEA we measure these whole air samples for a suite of up to 50 trace gases, covering all the major ozone depleting substances and non-CO2/CH4 greenhouse gases. We measure compounds at ‘parts per trillion’ (ppt) level or below in samples as small as 20 ml. It’s very hard to visualise 1 ppt… but it’s equivalent to about one second in 32,000 years measured in a sample that could fit in an egg cup.

Often these air samples are also analysed at other labs in Europe and other parts of the world, adding to the total number of compounds and isotopes we can quantify. Samples such as these have helped us identify new threats to ozone recovery and to quantify emissions of climatically-important trace gases such as HFCs and PFCs. To measure such trace, trace gases requires an instrument that is both large and temperamental. As such, it doesn’t (well can’t) leave the lab and we bring all the samples back to it. Stopping to imagine where the samples came from and how rare and special they can be (air from 30 km high or from deep in an ancient ice core!) helps me get through the long and labour intensive days in the laboratory.

By Emma Elvidge, University of East Anglia, UK

Imaggeo is the EGU’s online open access geosciences image repository. All geoscientists (and others) can submit their photographs and videos to this repository and, since it is open access, these images can be used for free by scientists for their presentations or publications, by educators and the general public, and some images can even be used freely for commercial purposes. Photographers also retain full rights of use, as Imaggeo images are licensed and distributed by the EGU under a Creative Commons licence. Submit your photos at http://imaggeo.egu.eu/upload/.

Last chance to enter the EGU Photo Competition 2019!

Last chance to enter the EGU Photo Competition 2019!

If you are pre-registered for the 2019 General Assembly (Vienna, 7-12 April), you can take part in our annual photo competition! Winners receive a free registration to next year’s General Assembly! But hurry, there are only a few days left to enter!

Every year we hold a photo competition and exhibit in association with our open access image repository, Imaggeo, and our annual General Assembly. There is also a moving image competition, which features a short clip of continuous geoscience footage. Pre-registered conference participants can take part by submitting up to three original photos and/or one moving image on any broad theme related to the Earth, planetary and space sciences.

Shortlisted photos will be exhibited at the conference, together with the winning moving image, which will be selected by a panel of judges. General Assembly participants can vote for their favorite photos and the winning images will be announced on the last day of the meeting.

How to enter

You will need to register on Imaggeo to upload your image, which will also be included in the database. When you’ve uploaded it, you’ll have the option to edit the image details – here you can enter it into the EGU Photo Contest – just check the checkbox! The deadline for submissions is 15 February.

Previous winning photographs can be seen on the 201020112012,  201320142015, 2016, 2017, and 2018 winners’ pages.

EGU 2019 will take place from 07 to 12 April 2019 in Vienna, Austria. For more information on the General Assembly, see the EGU 2019 website and follow us on Twitter (#EGU19 is the official conference hashtag) and Facebook.

Last chance to enter the EGU Photo Contest 2017!

Last chance to enter the EGU Photo Contest 2017!

If you are pre-registered for the 2017 General Assembly (Vienna, 23 -28 April), you can take part in our annual photo competition! Winners receive a free registration to next year’s General Assembly! But hurry, there are only a few days left to enter!

Every year we hold a photo competition and exhibit in association with our open access image repository, Imaggeo and our annual General Assembly. There is also a moving image competition, which features a short clip of continuous geoscience footage. Pre-registered conference participants can take part by submitting up to three original photos and/or one moving image on any broad theme related to the Earth, planetary and space sciences.

How to enter

You will need to register on Imaggeo to upload your image, which will also be included in the database. When you’ve uploaded it, you’ll have the option to edit the image details – here you can enter it into the EGU Photo Contest – just check the checkbox! The deadline for submissions is 1 March.

Last chance to enter the EGU Photo Contest 2016!

Last chance to enter the EGU Photo Contest 2016!

If you are pre-registered for the 2016 General Assembly (Vienna, 17 -22 April), you can take part in our annual photo competition! Winners receive a free registration to next year’s General Assembly! But hurry, there are only a few days left to enter!

Every year we hold a photo competition and exhibit in association with our open access image repository, Imaggeo and our annual General Assembly. There is also a moving image competition, which features a short clip of continuous geoscience footage. Pre-registered conference participants can take part by submitting up to three original photos and/or one moving image on any broad theme related to the Earth, planetary and space sciences.

How to enter

You will need to register on Imaggeo to upload your image, which will also be included in the database. When you’ve uploaded it, you’ll have the option to edit the image details – here you can enter it into the EGU Photo Contest – just check the checkbox! The deadline for submissions is 1 March.