Steffanie Schirren
Institute of Climate-Smart Agriculture

Bundesallee 65
38116 Braunschweig
Phone: +49 531 596 2602
Fax: +49 531 596 2699



Greenhouse gas measurements in the Bourtanger Moor natural park (c) Thünen-Institut/AK
Greenhouse gas measurements in the Bourtanger Moor natural park (© Thünen-Institut/AK)

A novel approach to investigate effects of atmospheric nitrogen deposition on ecosystem productivity and greenhouse gas exchange

The project NITROSPHERE investigates the relationship between atmospheric nitrogen deposition and greenhouse gas exchange of different ecosystems using novel measurement techniques (TRANC).

Background and Objective

Despite comprehensive investigations in the field of C and N cycling, there is still little knowledge about direct implications of alterations in N deposition on ecosystem productivity and GHG exchange, which can at least partly be attributed to the lack of comprehensive reactive N measurements with high temporal resolution. Thus, the junior research group NITROSPHERE will contribute to ecosystem-atmosphere research by

  1. establishing an improved methodology (the TRANC) for continuous monitoring of Nr exchange and by
  2. synthesizing already existing datasets with a special emphasis on the  impact of Nr exchange/deposition on gross ecosystem productivity and on other GHG fluxes of affected ecosystems.

Outcomes of the project are also expected to (i) further develop research infrastructures such as ICOS through instrumental and analytical improvements, (ii) increase the potential of global data assimilation networks such as FLUXNET, (iii) providing a better data basis for (re-)formulating Nr emission factors and climate protection regulations, and (iv) enhance the understanding of C and N cycling in both natural and managed ecosystems.


The group NITROSPHERE will consist of 3 researchers, i.e. two PhD students beside the group leader, and a technician to support all field- and lab-related work. The two PhD students will be assigned to one working package (WP) each and will mainly be responsible for the subtasks and milestones within the respective WP. The focus of WP I lies on Nr measurements and methodology improvement of the recently developed TRANC system. Measurements at peatland, agricultural, and forest sites are planned. WP II deals with data synthesis and Nr modeling to elaborate the relationship between Nr and GHG exchange. All subtasks of the project are expected to be finalized within the first 4 years; a fifth year is intended for further result application such as a regionalization of the obtained relationships.

Installation of micrometeorological measurement equipment at an agricultural site in the Emsland region
Installation of micrometeorological measurement equipment at an agricultural site in the Emsland region (© Thünen-Institut/AK)


Involved Thünen-Partners

Involved external Thünen-Partners

Funding Body

  • Federal Ministry of Education and Research (BMBF)
    (national, öffentlich)


8.2013 - 7.2019

More Information

Projekt type:
Project funding number: 01LN1308A
Project status: ongoing

Agricultural land near Thünen Institut in Braunschweig
Agricultural land near Thünen Institut in Braunschweig (© Thünen-Institut/AK)


hits: 13

  1. Schrader F, Schaap M, Zöll U, Kranenburg R, Brümmer C (2018) The hidden cost of using low-resolution concentration data in the estimation of NH3 dry deposition fluxes. Sci Rep 8:969, DOI:10.1038/s41598-017-18021-6
    pdf document (limited accessibility) 2790 kb
  2. Lucas-Moffat AM, Huth V, Augustin J, Brümmer C, Herbst M, Kutsch WL (2018) Towards pairing plot and field scale measurements in managed ecosystems: Using eddy covariance to cross-validate CO2 fluxes modeled from manual chamber campaigns. Agric Forest Meteorol 256-257:362-378, DOI:10.1016/j.agrformet.2018.01.023
  3. Brümmer C, Lyshede B, Lempio D, Delorme J-P, Rüffer J, Fuß R, Moffat AM, Hurkuck M, Ibrom A, Ambus P, Flessa H, Kutsch WL (2017) Gas chromatography vs. quantum cascade laser-based N2O flux measurements using a novel chamber design. Biogeosciences 14(6):1365-1381, DOI:10.5194/bg-14-1365-2017
    pdf document (limited accessibility) 9446 kb
  4. Moffat AM, Brümmer C (2017) Improved parameterization of the commonly used exponential equation for calculating soil-atmosphere exchange fluxes from closed-chamber measurements. Agric Forest Meteorol 240:18-25, DOI:10.1016/j.agrformet.2017.03.005
  5. Hurkuck M, Brümmer C, Kutsch WL (2016) Near-neutral carbon dioxide balance at a seminatural, temperate bog ecosystem. J Geophys Res Biogeosci 12(2):370-384, DOI:10.1002/2015JG003195
  6. Schrader F, Brümmer C, Flechard CR, Wichink Kruit RJ, Zanten MC van, Zöll U, Hensen A, Erisman JW (2016) Non-stomatal exchange in ammonia dry deposition models: comparison of two state-of-the-art approaches. Atmospheric Chem Phys 16(21):13417-13430, DOI:10.5194/acp-16-11283-2016
    pdf document (limited accessibility) 2365 kb
  7. Zöll U, Brümmer C, Schrader F, Ammann C, Ibrom A, Flechard CR, Nelson DD, Zahniser M, Kutsch WL (2016) Surface-atmosphere exchange of ammonia over peatland using QCL-based eddy-covariance measurements and inferential modeling. Atmospheric Chem Phys 16(17):11283-11299, DOI:10.5194/acp-16-11283-2016
    pdf document (limited accessibility) 537 kb
  8. Mohr K, Suda J, Kros H, Brümmer C, Kutsch WL, Hurkuck M, Woesner E, Wesseling W (2015) Atmosphärische Stickstoffeinträge in Hochmoore Nordwestdeutschlands und Möglichkeiten ihrer Reduzierung - eine Fallstudie aus einer landwirtschaftlich intensiv genutzten Region. Braunschweig: Johann Heinrich von Thünen-Institut, 108 p, Thünen Rep 23, DOI:10.3220/REP_23_2015
    pdf document (limited accessibility) 5649 kb
  9. Hurkuck M, Brümmer C, Mohr K, Spott O, Well R, Flessa H, Kutsch WL (2015) Effects of grass species and grass growth on atmospheric nitrogen deposition to a bog ecosystem surrounded by intensive agricultural land use. Ecol Evol 5(13):2556-2571, DOI:10.1002/ece3.1534
    pdf document (limited accessibility) 561 kb
  10. Hurkuck M, Brümmer C, Mohr K, Grünhage L, Flessa H, Kutsch WL (2014) Determination of atmospheric nitrogen deposition to a semi-natural peat bog site in an intensively managed agricultural landscape. Atmos Environ 97:296-309, DOI:10.1016/j.atmosenv.2014.08.034
  11. Schrader F, Brümmer C (2014) Genfer Luftreinhaltekonvention der UNECE: Literaturstudie zu Messungen der Ammoniak-Depositionsgeschwindigkeit. Dessau: Umweltbundesamt, 37 p, Texte UBA 67
  12. Schrader F, Brümmer C (2014) Land use specific ammonia deposition velocities: a review of recent studies (2004-2013). Water Air Soil Pollut 225:2114, DOI:10.1007/s11270-014-2114-7
  13. Brümmer C, Marx O, Kutsch WL, Ammann C, Wolff V, Flechard CR, Freibauer A (2013) Fluxes of total reactive atmospheric nitrogen (SNr) using eddy covariance above arable land. Tellus Ser B 65:19770,
    pdf document (limited accessibility) 3553 kb