StratoClim long-term data storage

8 January 2020

StratoClim project came to an end on May 2019.

        Stratoclim@Halo database

The scientific results of the project will be published in the peer reviewed literature until end of 2020, most of them in a dedicated special issue in Atmospheric Chemistry and Physics (ACP)
Apart from that, the unique OA dataset will provide material for many more studies.

The StratoClim data will be hosted for long-term within the HALO database at at DLR (Deutsches Zentrum für Luft- und Raumfahrt). The HALO database is a data retrieval and long-term archiving system with a web front-end. It allows users to access a wide range of data based on, or related to, observations of the German HALO research aircraft or other scientific missions involving research aircrafts other than HALO.

The Database will be populated gradually, and it is expected that all data will be available via the HALO database by the summer 2020.

30 January 2019

StratoClim Open Science meeting

22. - 24. May 2019
Albert Einstein Science Campus Potsdam, Germany

The StratoClim project will organize an Open Science meeting in May 2019 to present the first results from the Asian Monsoon aircraft campaign and introduce the results of numerical simulations with a range of atmospheric models.

This meeting is open to all interested colleagues.

For more information and to register by April 28, 2019, please visit the event website at

Prior to the Open Science meeting, or 20. - 22. May, the StratoClim project will organize also its final closed project annual meeting. All project partners are welcome to this meeting. More information together with a link to registration and abstract submission can be found at

5 March 2018

Stakeholder Event in Kathmandu

On Monday March 5, some of the project partners held back to Kathmandu to convene with the Nepalese consortium established under the auspices of the Nepal Academy of Science and Technology (NAST) to report on the preliminary outcomes of the aircraft campaign from the summer 2017.

The event was opened by Mrs. C. Hiepe from the German Embassy in Nepal together with Prof. Pokharel, the Vice Chancellor of NAST. Prof. Markus Rex from Alfred Wegener Institute, the StratoClim coordinator, held an overview presentation on the StratoClim Project and the aircraft campaign followed by a presentation by Dr. Fred Stroh from Forschungszentrum Jülich, the campaign coordinator, on the execution and preliminary results from summer 2017. After that the preliminary outcomes from the airborne particle measurements were introduced and their atmospheric relevance explained by Prof. Stephan Borrmann from Max-Planck-Intitute for Chemistry, Mainz.

11 August 2017

After eight successfull scientific flights

The StratoClim aircraft campaign has now come to an end. We are very excited to announce that all objectives of the campaign have been reached during the eight scientific missions flown out of Kathmandu. All 25 instruments on board of Geophysica have collected impressive amounts of data, which now will be taken to post- processing and analyses back home. While the instrumentation is being packed for home transfer, local Nepalese media and stakeholders are invited to the hangar to take a last look at the scientific instrumentation as well as at the aircraft and learn about the preliminary outcomes of the campaign. The four weeks of measurements will be closed with a campaign scientific meeting tomorrow for all campaign participants after which most groups will head home.

Photo: Leena-Kaisa Viitanen (AWI) Photo: Jule Heuchert (DLR)
Photo: Jule Heuchert (DLR)

1 August 2017

The StratoClim team in Kathmandu

Press release

The project has issued a press release on the ongoing aircraft campaign. It is also available in German.

Photos: Markus Rex (AWI)

1 August 2017

Balloon campaigns taking place simultaneously with the aircraft campaign

Simultaneously with the aircraft measurement campaign, balloon soundings are being conducted at five different locations on the Indian subcontinent and close-by areas in co-operations with local partners and the SWOP and BATAL activities. The research balloons carry various instruments to about 30km altitude, measuring ozone, aerosol properties, water vapour and meteorological parameters. The ground stations carrying out these measurements are located in the Kathmandu valley, Nepal, on Bhola Island, Bangladesh, Kunming, China, Hyderabad, India and on Palau in the West Pacific.

Photos: Jürgen Graeser, AWI

31 July 2017

Already three successful flights during the aircraft campaign

Photo: Markus Rex (AWI)

The aircraft has now flown three successful research flights over the monsoon area. The campaign is scheduled to have altogether 9 flights, but already now the project is on a very good track for reaching all of its scientific goals.

During these first three flights virtually all instruments have collected data. The aircraft has been able to follow the designated flight patterns, the instruments thus probing the most interesting part of the air at the given time.

The fourth flight is scheduled for Wednesday August 2 and the rest of the flights for every other day or so until the middle of August. Below is a link to a video from the take off for the first flight.

27 July 2017

Geophysica takeoff for StratoClim

High altitude research aircraft M55-Geophysica taking off at Kathmandu (Nepal) for the first scientific
mission into the upper levels of the Asian Monsoon. Clare Singer, University of Chicago

20 July 2017

Main Aircraft campaign taking place in Kathmandu Nepal

Geophysica - approach, photo: Markus Rex (AWI)

The StratoClim main aircraft campaign starts today, 20 July 2017, in Kathmandu Nepal. The campaign will be implemented by using a Russian high-flying M-55 Geophysica aircraft, which was converted into a research platform in 1996. Geophysica, with a ceiling altitude up to 20km, will fly above the Asian Monsoon system studying the composition of the air that is transported by the monsoon to the Upper Troposphere and Stratosphere (UTS).

The air researched within the project is affected by extremely interesting and complex chemical processes taking place inside clouds. So far no one has ever been able to characterize this air or carry out a scientific research mission above the monsoon. The StratoClim project will, for the first time ever, investigate these chemical processes that transport and produce aerosols in the UTS. It is hypothesized that these tiny aerosol particles play a major role in the condensation processes resulting in formation of the monsoon clouds and affecting the dynamics of the monsoon.

Photo: Markus Rex (AWI).

Our goal is to better understand these processes and contribute to more reliable assessments of how the monsoon system is affected by anthropogenic emissions and how it will respond to climate change and to changes in these emissions. For this unique measurement campaign the aircraft will be equipped with a state-of-the-art instrument suite including several new instruments in order to measure a complete set of trace species and parameters, including H2O, O3, COS, SO2, H2SO4, CO, and CO2 and HCN, long-lived tracers, nitrogen oxides, active halogen species, as well as particle size distribution, optical properties and chemical composition.

To follow the campaign in real time, you can follow this link to Corinna Kloss' blog in which she reports from the site while participating in the campaign as part of the Jülich research team operating AMICA instrument.

Approach of the Geophysica aircraft to Kathmandu

Geophysica at the Tribhuvan Airport, photos: Markus Rex, AWI

StratoClim Asian Monsoon Aircraft Campaign Fact Sheet (PDF)

More information on the Tropical aircraft field campaign, please go here.

1 March 2017

Photo: Katrin Müller

Third intensive measuring period starting in Palau ground station
On February 20 the third intensive sounding campaign started at the Palau ground station in the West Pacific. The campaign will run until March 17 with more frequent ozone sonde launches every 2 to 3 days. Different outreach events for the public, especially the high school students will take place.

Throughout the fall and early winter biweekly soundings have been conducted by the staff of the local Coral Reef Research Foundation and with this 3rd intensive campaign the project will complete a first ever annual record of ozone from the location.

5 October 2016
2nd SC Newsletter is published.

19 September 2016

2nd Stratoclim annual meeting will be held in Madrid Spain, 16 - 18 November 2016. The registration for the upcoming 2nd StratoClim annual meeting is now open here on the website. The deadline for registrations is Friday October 14, 2016.
The event website with all practical information will be updated regularly during the next days.
The meeting will again host a poster session. All consortium members are encouraged to present their latest results during this session.
register here

August 2016

Last minute preparation before flight. Sunrise in the back.
Picture by Brian Leen. - screenshot from Corinna Kloss' blog

The first phase aircraft campaign is now taking place in Kalamata Greece and will continue until September, with an objective of testing the new instruments and hopefully measuring the outflow from the decaying anticyclone.

To follow the campaign in real time, you can follow this link to Corinna Kloss' blog in which she reports from the site while participating in the campaign as part of the Jülich research team operating AMICA instrument.

26 July 2016
Start of balloone borne ozone soundings at the met. station of Bhola Island/Bangladesh (Univ. of Dhaka/ Alfred Wegener Institute)

Photos: Jürgen Graeser

10 February 2016
Unusual cold spell in the stratosphere creates conditions for severe ozone depletion in the Arctic
AWI researchers measure temperatures of minus 90 degrees Celsius and lower at 20 kilometres altitude.
Bremerhaven, 10 February 2016. Unusual weather development in the Arctic leads to ozone depletion. According to the researchers of the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, in the past weeks an extreme cold spell in the Arctic stratosphere has created conditions that might cause severe ozone depletion over the Arctic in March - if the next few weeks will not bring a significant warming. Read more...

chemistry conditions (ATLAS model calculations with ECMWF forecast) Integrated chemical column ozone loss (ATLAS model calculations with ECMWF forecast)
see chemistry conditions as film from 1. Dez to now(click pictures to enlarge)

15 January 2016
Official Opening of Palau Atmospheric Observatory
Measurements in an area of global importance for climate research

Today the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research (AWI) and the Institute for Environmental Physics of the University Bremen officially open their Palau Atmospheric Observatory at the Campus of the Palau Community College (PCC). The new observatory is part of the European climate research project StratoClim, a consortium of 28 European research organisations led by AWI, and is operated in close collaboration with the PCC.

13 April 2015
Memorandum of Understanding about joint research activities has been signed between the German HGF organization and the Indian Ministry of Earth Science.

30 December 2014
ZEIT-Article (in german)

30 September 2014
StratoClim website online!

11 September 2014
WMO/UNEP: Ozone layer on track for slow recovery
StratoClim contributed to the WMO/UNEP Scientific Assessment of Ozone Depletion: 2014, a summary of which was released to the public on September 10.
WMO/UNEP press release
Small selection of media coverage involving StratoClim scientists:
"ZDF heute" 11 September 2014, 7pm
"Frankfurter Allgemeine Sonntagszeitung" 14 September 2014
Opinion by StratoClim coordinator

24 April 2014
First results from StratoClim have been featured in the Science Magazine: "Does the Sky Have a Faulty Filter?"

3 April 2014
The StratoClim Kick-off meeting took place in Berlin from 31st March to 1st April 2014 with 71 participants.