Hypothesis:

Signatures of Arctic amplification along with their dynamic and radiative effects can be revealed in the extensive observations of the Ny-Ålesund column.

In order to test the hypothesis, we will address the following central questions:

• How do water vapor, clouds, aerosols, trace gases, precipitation, and associated radiative effects at NYA vary on intra- and inter-annual time scales?
• How do circulation weather types, along with advection of airmasses from lower latitudes, modify these properties of the NYA column?
• What is the impact of long-term changes and trends in circulation weather type characteristics on the past, recent and potential future development of the NYA atmospheric state?

The vertically resolved measurements of the NYA column and its properties are a key tool for investigating processes that cause and contribute to Arctic amplification, e.g., the impact of trace gases, aerosols, and clouds on radiation (SQ1). NYA is one of the very few Arctic stations with corresponding long-term meteorological upper-air observations where signals of Arctic amplification can be observed (SQ3). At the same time, NYA is located in the Atlantic gateway to the Arctic and is influenced by profound atmospheric exchange occurring between the Arctic and mid-latitude air masses (SQ2).

Achievements phase II

• Continuous operation of remote sensing instruments (incl. cloud radar and new emission FTS) and retrieval products including new methods to characterize the NYA column
• Improved understanding of clouds, water vapor and associated radiative effects at NYA
• Characterization of MCAOs and their footprint in the NYA column and sea ice concentration
• Joint analysis of NYA data with high-resolution modeling, large-scale models and reanalyses
• Evaluation of satellite products and creation of global maps for trace gases (satellite & NYA data)

Achievements phase I

E02 achieved an update of retrieval software for high resolution Fourier Transfrom Infrared (FTIR) spectrometer measurements (new and extended spectroscopy, trace gases and clouds in emission), in particular improving the retrieval of H2O and isotopes of water vapour. Improved retrievals of temperature, humidity, and Liquid Water Path (LWP) were also performed. Cloud macrophysical and microphysical retrievals for Ny–Ålesund data, based on new cloud radar observations at the AWIPEV atmospheric observatory, were analysed (Nomokonova et al., 2019b; Maturilli and Ebell, 2018). Furthermore, a detailed analysis of a one-year data set of vertically resolved cloud properties was performed, and the retrievals of aerosol microphysical properties were used to estimate the radiative impact of a biomass burning event (Ritter et al., 2018). Also, a first assessment of the cloud radiative effect at Ny-Ålesund in combination with a broadband radiative transfer model, and a quantification of atmospheric advective contribution to warming in the North Atlantic region of the Arctic were achieved (Dahlke and Maturilli, 2017).

Role within (AC)³

Project Posters

Phase III Evaluation poster 2023	Phase II Evaluation poster 2019	Phase I Evaluation poster 2015

Project Members

Publications

2026

Ji, D., Sun, X., Ritter, C., and Notholt, J. , 2026: Retrieval of aerosol composition from spectral aerosol optical depth and optical properties using a machine learning approach. Atmos. Meas.t Tech., 19(2):421–436, doi:10.5194/amt-19-421-2026

2025

Ebell, K., Buhren, C., Gierens, R., Chellini, G., Lauer, M., Walbröl, A., Dahlke, S., Krobot, P., and Mech, M. , July 2025: Impact of weather systems on observed precipitation at Ny-Ålesund (Svalbard). Atmospheric Chem. Phys., 25(13):7315–7342, doi:10.5194/acp-25-7315-2025

Slättberg, N., Dahlke, S., and Maturilli, M. , June 2025: Fram strait marine cold air outbreaks in CARRA and ERA5: Effects on surface turbulent heat fluxes and the vertical structure of the troposphere. J. Geophys. Res.-Atmospheres, doi:10.1029/2024JD042908

Seidel, C., Althausen, D., Ansmann, A., Wendisch, M., Griesche, H., Radenz, M., Hofer, J., Dahlke, S., Maturilli, M., Walbröl, A., Baars, H., and Engelmann, R. , April 2025: Close correlation between vertically integrated tropospheric water vapor and the downward, broadband thermal-infrared irradiance at the ground: Observations in the central arctic during MOSAiC. J. Geophys. Res.-Atmospheres, doi:10.1029/2024JD042378

Ji, D., Palm, M., Buschmann, M., Ebell, K., Maturilli, M., Sun, X., and Notholt, J. , April 2025: Hygroscopic aerosols amplify longwave downward radiation in the Arctic. Atmospheric Chem. Phys., 25(7):3889–3904, doi:10.5194/acp-25-3889-2025

Dahlke, S., Rinke, A., Shupe, M. D., and Cox, C. J. , April 2025: The two arctic wintertime boundary layer states: Disentangling the role of cloud and wind regimes in reanalysis and observations during MOSAiC. Atmospheric Sci. Lett., doi:10.1002/asl.1298

Jimenez, C., Ansmann, A., Ohneiser, K., Griesche, H., Engelmann, R., Radenz, M., Hofer, J., Althausen, D., Knopf, D. A., Dahlke, S., Bühl, J., Baars, H., Seifert, P., and Wandinger, U. , 2025: MOSAiC studies of long-lasting mixed-phase cloud events and analysis of the liquid-phase properties of Arctic clouds. Atmospheric Chem. Phys., 25(20):12955–12981, doi:10.5194/acp-25-12955-2025

Ji, D., Ritter, C., Sun, X., Moser, M., Voigt, C., Palm, M., and Notholt, J. , 2025: Giant cloud condensation nuclei enhanced ice sublimation process: a potential mechanism in mixed-phase clouds. Atmospheric Chem. Phys., 25(20):13037–13052, doi:10.5194/acp-25-13037-2025

Hachmeister, J., Wunch, D., McGee, E., Strong, K., Kivi, R., Notholt, J., Warneke, T., and Buschmann, M. , 2025: Reduction of airmass-dependent biases in TCCON XCH$_4$ retrievals during polar vortex conditions. Atmos. Meas. Tech., 18(22):7105–7128, doi:10.5194/amt-18-7105-2025

Ansmann, A., Jimenez, C., Roschke, J., Bühl, J., Ohneiser, K., Engelmann, R., Radenz, M., Griesche, H., Hofer, J., Althausen, D., Knopf, D. A., Dahlke, S., Gaudek, T., Seifert, P., and Wandinger, U. , 2025: Impact of wildfire smoke on Arctic cirrus formation – Part 1: Analysis of MOSAiC 2019–2020 observations. Atmos. Chem. Phys., 25(9):4847–4866, doi:10.5194/acp-25-4847-2025

2024

Wendisch, M., Crewell, S., Ehrlich, A., Herber, A., Kirbus, B., Lüpkes, C., Mech, M., Abel, S. J., Akansu, E. F., Ament, F., Aubry, C., Becker, S., Borrmann, S., Bozem, H., Brückner, M., Clemen, H., Dahlke, S., Dekoutsidis, G., Delanoë, J., De La Torre Castro, E., Dorff, H., Dupuy, R., Eppers, O., Ewald, F., George, G., Gorodetskaya, I. V., Grawe, S., Groß, S., Hartmann, J., Henning, S., Hirsch, L., Jäkel, E., Joppe, P., Jourdan, O., Jurányi, Z., Karalis, M., Kellermann, M., Klingebiel, M., Lonardi, M., Lucke, J., Luebke, A. E., Maahn, M., Maherndl, N., Maturilli, M., Mayer, B., Mayer, J., Mertes, S., Michaelis, J., Michalkov, M., Mioche, G., Moser, M., Müller, H., Neggers, R., Ori, D., Paul, D., Paulus, F. M., Pilz, C., Pithan, F., Pöhlker, M., Pörtge, V., Ringel, M., Risse, N., Roberts, G. C., Rosenburg, S., Röttenbacher, J., Rückert, J., Schäfer, M., Schaefer, J., Schemann, V., Schirmacher, I., Schmidt, J., Schmidt, S., Schneider, J., Schnitt, S., Schwarz, A., Siebert, H., Sodemann, H., Sperzel, T., Spreen, G., Stevens, B., Stratmann, F., Svensson, G., Tatzelt, C., Tuch, T., Vihma, T., Voigt, C., Volkmer, L., Walbröl, A., Weber, A., Wehner, B., Wetzel, B., Wirth, M., and Zinner, T. , August 2024: Overview: Quasi-Lagrangian Observations of Arctic Air Mass Transformations – Introduction and Initial Results of the HALO–(A C)\textsuperscript3 Aircraft Campaign. Atmospheric Chem. Phys., 24(15):8865–8892, doi:10.5194/acp-24-8865-2024

Lindqvist, H., Kivimäki, E., Häkkilä, T., Tsuruta, A., Schneising, O., Buchwitz, M., Lorente, A., Martinez Velarte, M., Borsdorff, T., Alberti, C., Backman, L., Buschmann, M., Chen, H., Dubravica, D., Hase, F., Heikkinen, P., Karppinen, T., Kivi, R., McGee, E., Notholt, J., Rautiainen, K., Roche, S., Simpson, W., Strong, K., Tu, Q., Wunch, D., Aalto, T., and Tamminen, J. , August 2024: Evaluation of Sentinel-5P TROPOMI Methane Observations at Northern High Latitudes. Remote Sens., 16(16):2979, doi:10.3390/rs16162979

Kirbus, B., Schirmacher, I., Klingebiel, M., Schäfer, M., Ehrlich, A., Slättberg, N., Lucke, J., Moser, M., Müller, H., and Wendisch, M. , April 2024: Thermodynamic and Cloud Evolution in a Cold-Air Outbreak during HALO-(AC)\textsuperscript3 : Quasi-Lagrangian Observations Compared to the ERA5 and CARRA Reanalyses. Atmospheric Chem. Phys., 24(6):3883–3904, doi:10.5194/acp-24-3883-2024

Notholt, J., Schmithüsen, H., Buschmann, M., and Kleidon, A. , January 2024: Infrared Radiative Effects of Increasing CO\textsubscript2 and CH\textsubscript4 on the Atmosphere in Antarctica Compared to the Arctic. Geophys. Res. Lett., 51(2):e2023GL105600, doi:10.1029/2023GL105600

Hachmeister, J., Schneising, O., Buchwitz, M., Burrows, J. P., Notholt, J., and Buschmann, M. , 2024: Zonal variability of methane trends derived from satellite data. Atmos. Chem. Phys., 24(1):577–595, doi:10.5194/acp-24-577-2024

2023

Chellini, G., Gierens, R., Ebell, K., Kiszler, T., Krobot, P., Myagkov, A., Schemann, V., and Kneifel, S. , December 2023: Low-Level Mixed-Phase Clouds at the High Arctic Site of Ny-Ålesund: A Comprehensive Long-Term Dataset of Remote Sensing Observations. Earth Syst. Sci. Data, 15(12):5427–5448, doi:10.5194/essd-15-5427-2023

Vinjamuri, K. S., Vountas, M., Lelli, L., Stengel, M., Shupe, M. D., Ebell, K., and Burrows, J. P. , June 2023: Validation of the Cloud_CCI (Cloud Climate Change Initiative) Cloud Products in the Arctic. Atmospheric Meas. Tech., 16(11):2903–2918, doi:10.5194/amt-16-2903-2023

Heinemann, G., Schefczyk, L., Zentek, R., Brooks, I. M., Dahlke, S., and Walbröl, A. , June 2023: Evaluation of Vertical Profiles and Atmospheric Boundary Layer Structure Using the Regional Climate Model CCLM during MOSAiC. Meteorology, 2(2):257–275, doi:10.3390/meteorology2020016

Kiszler, T., Ebell, K., and Schemann, V. , May 2023: A Performance Baseline for the Representation of Clouds and Humidity in Cloud-Resolving ICON-LEM Simulations in the Arctic. J. Adv. Model. Earth Syst., 15(5):e2022MS003299, doi:10.1029/2022MS003299

Ahmed, S., Thomas, J. L., Angot, H., Dommergue, A., Archer, S. D., Bariteau, L., Beck, I., Benavent, N., Blechschmidt, A., Blomquist, B., Boyer, M., Christensen, J. H., Dahlke, S., Dastoor, A., Helmig, D., Howard, D., Jacobi, H., Jokinen, T., Lapere, R., Laurila, T., Quéléver, L. L. J., Richter, A., Ryjkov, A., Mahajan, A. S., Marelle, L., Pfaffhuber, K. A., Posman, K., Rinke, A., Saiz-Lopez, A., Schmale, J., Skov, H., Steffen, A., Stupple, G., Stutz, J., Travnikov, O., and Zilker, B. , May 2023: Modelling the Coupled Mercury-Halogen-Ozone Cycle in the Central Arctic during Spring. Elem Sci Anth, 11(1):00129, doi:10.1525/elementa.2022.00129

Ji, D., Palm, M., Ritter, C., Richter, P., Sun, X., Buschmann, M., and Notholt, J. , April 2023: Ground-Based Remote Sensing of Aerosol Properties Using High-Resolution Infrared Emission and Lidar Observations in the High Arctic. Atmospheric Meas. Tech., 16(7):1865–1879, doi:10.5194/amt-16-1865-2023

Schneising, O., Buchwitz, M., Hachmeister, J., Vanselow, S., Reuter, M., Buschmann, M., Bovensmann, H., and Burrows, J. P. , February 2023: Advances in Retrieving XCH\textsubscript4 and XCO from Sentinel-5 Precursor: Improvements in the Scientific TROPOMI/WFMD Algorithm. Atmospheric Meas. Tech., 16(3):669–694, doi:10.5194/amt-16-669-2023

Pasquier, J. T., Henneberger, J., Korolev, A., Ramelli, F., Wieder, J., Lauber, A., Li, G., David, R. O., Carlsen, T., Gierens, R., Maturilli, M., and Lohmann, U. , January 2023: Understanding the History of Two Complex Ice Crystal Habits Deduced From a Holographic Imager. Geophys. Res. Lett., 50(1):e2022GL100247, doi:10.1029/2022GL100247

2022

Pasquier, J. T., Henneberger, J., Ramelli, F., Lauber, A., David, R. O., Wieder, J., Carlsen, T., Gierens, R., Maturilli, M., and Lohmann, U. , December 2022: Conditions Favorable for Secondary Ice Production in Arctic Mixed-Phase Clouds. Atmospheric Chem. Phys., 22(23):15579–15601, doi:10.5194/acp-22-15579-2022

King, F., Duffy, G., Milani, L., Fletcher, C. G., Pettersen, C., and Ebell, K. , October 2022: DeepPrecip: A Deep Neural Network for Precipitation Retrievals. Atmospheric Meas. Tech., 15(20):6035–6050, doi:10.5194/amt-15-6035-2022

Chellini, G., Gierens, R., and Kneifel, S. , August 2022: Ice Aggregation in Low-Level Mixed-Phase Clouds at a High Arctic Site: Enhanced by Dendritic Growth and Absent Close to the Melting Level. J. Geophys. Res. Atmospheres, 127(16):e2022JD036860, doi:10.1029/2022JD036860

Hachmeister, J., Schneising, O., Buchwitz, M., Lorente, A., Borsdorff, T., Burrows, J. P., Notholt, J., and Buschmann, M. , July 2022: On the Influence of Underlying Elevation Data on Sentinel-5 Precursor TROPOMI Satellite Methane Retrievals over Greenland. Atmospheric Meas. Tech., 15(13):4063–4074, doi:10.5194/amt-15-4063-2022

Richter, P., Palm, M., Weinzierl, C., Griesche, H., Rowe, P. M., and Notholt, J. , June 2022: A Dataset of Microphysical Cloud Parameters, Retrieved from Fourier-transform Infrared (FTIR) Emission Spectra Measured in Arctic Summer 2017. Earth Syst. Sci. Data, 14(6):2767–2784, doi:10.5194/essd-14-2767-2022

Geerts, B., Giangrande, S. E., McFarquhar, G. M., Xue, L., Abel, S. J., Comstock, J. M., Crewell, S., DeMott, P. J., Ebell, K., Field, P., Hill, T. C. J., Hunzinger, A., Jensen, M. P., Johnson, K. L., Juliano, T. W., Kollias, P., Kosovic, B., Lackner, C., Luke, E., Lüpkes, C., Matthews, A. A., Neggers, R., Ovchinnikov, M., Powers, H., Shupe, M. D., Spengler, T., Swanson, B. E., Tjernström, M., Theisen, A. K., Wales, N. A., Wang, Y., Wendisch, M., and Wu, P. , May 2022: The COMBLE Campaign: A Study of Marine Boundary Layer Clouds in Arctic Cold-Air Outbreaks. Bull. Am. Meteorol. Soc., 103(5):E1371–E1389, doi:10.1175/BAMS-D-21-0044.1

Malina, E., Veihelmann, B., Buschmann, M., Deutscher, N. M., Feist, D. G., and Morino, I. , April 2022: On the Consistency of Methane Retrievals Using the Total Carbon Column Observing Network (TCCON) and Multiple Spectroscopic Databases. Atmospheric Meas. Tech., 15(8):2377–2406, doi:10.5194/amt-15-2377-2022

Shupe, M. D., Rex, M., Blomquist, B., Persson, P. O. G., Schmale, J., Uttal, T., Althausen, D., Angot, H., Archer, S., Bariteau, L., Beck, I., Bilberry, J., Bucci, S., Buck, C., Boyer, M., Brasseur, Z., Brooks, I. M., Calmer, R., Cassano, J., Castro, V., Chu, D., Costa, D., Cox, C. J., Creamean, J., Crewell, S., Dahlke, S., Damm, E., De Boer, G., Deckelmann, H., Dethloff, K., Dütsch, M., Ebell, K., Ehrlich, A., Ellis, J., Engelmann, R., Fong, A. A., Frey, M. M., Gallagher, M. R., Ganzeveld, L., Gradinger, R., Graeser, J., Greenamyer, V., Griesche, H., Griffiths, S., Hamilton, J., Heinemann, G., Helmig, D., Herber, A., Heuzé, C., Hofer, J., Houchens, T., Howard, D., Inoue, J., Jacobi, H., Jaiser, R., Jokinen, T., Jourdan, O., Jozef, G., King, W., Kirchgaessner, A., Klingebiel, M., Krassovski, M., Krumpen, T., Lampert, A., Landing, W., Laurila, T., Lawrence, D., Lonardi, M., Loose, B., Lüpkes, C., Maahn, M., Macke, A., Maslowski, W., Marsay, C., Maturilli, M., Mech, M., Morris, S., Moser, M., Nicolaus, M., Ortega, P., Osborn, J., Pätzold, F., Perovich, D. K., Petäjä, T., Pilz, C., Pirazzini, R., Posman, K., Powers, H., Pratt, K. A., Preußer, A., Quéléver, L., Radenz, M., Rabe, B., Rinke, A., Sachs, T., Schulz, A., Siebert, H., Silva, T., Solomon, A., Sommerfeld, A., Spreen, G., Stephens, M., Stohl, A., Svensson, G., Uin, J., Viegas, J., Voigt, C., Von Der Gathen, P., Wehner, B., Welker, J. M., Wendisch, M., Werner, M., Xie, Z., and Yue, F. , February 2022: Overview of the MOSAiC Expedition: Atmosphere. Elem Sci Anth, 10(1):00060, doi:10.1525/elementa.2021.00060

Shestakova, A. A., Chechin, D. G., Lüpkes, C., Hartmann, J., and Maturilli, M. , February 2022: The Foehn Effect during Easterly Flow over Svalbard. Atmospheric Chem. Phys., 22(2):1529–1548, doi:10.5194/acp-22-1529-2022

Hannigan, J. W., Ortega, I., Shams, S. B., Blumenstock, T., Campbell, J. E., Conway, S., Flood, V., Garcia, O., Griffith, D., Grutter, M., Hase, F., Jeseck, P., Jones, N., Mahieu, E., Makarova, M., De Mazière, M., Morino, I., Murata, I., Nagahama, T., Nakijima, H., Notholt, J., Palm, M., Poberovskii, A., Rettinger, M., Robinson, J., Röhling, A. N., Schneider, M., Servais, C., Smale, D., Stremme, W., Strong, K., Sussmann, R., Te, Y., Vigouroux, C., and Wizenberg, T. , February 2022: Global Atmospheric OCS Trend Analysis From 22 NDACC Stations. J. Geophys. Res. Atmospheres, 127(4):e2021JD035764, doi:10.1029/2021JD035764

Dahlke, S., Solbès, A., and Maturilli, M. , February 2022: Cold Air Outbreaks in Fram Strait: Climatology, Trends, and Observations During an Extreme Season in 2020. J. Geophys. Res. Atmospheres, 127(3):e2021JD035741, doi:10.1029/2021JD035741

Viceto, C., Gorodetskaya, I. V., Rinke, A., Maturilli, M., Rocha, A., and Crewell, S. , January 2022: Atmospheric Rivers and Associated Precipitation Patterns during the ACLOUD and PASCAL Campaigns near Svalbard (May–June 2017): Case Studies Using Observations, Reanalyses, and a Regional Climate Model. Atmospheric Chem. Phys., 22(1):441–463, doi:10.5194/acp-22-441-2022

Bresson, H., Rinke, A., Mech, M., Reinert, D., Schemann, V., Ebell, K., Maturilli, M., Viceto, C., Gorodetskaya, I., and Crewell, S. , January 2022: Case Study of a Moisture Intrusion over the Arctic with the ICOsahedral Non-hydrostatic (ICON) Model: Resolution Dependence of Its Representation. Atmospheric Chem. Phys., 22(1):173–196, doi:10.5194/acp-22-173-2022

Pasquier, J. T., David, R. O., Freitas, G., Gierens, R., Gramlich, Y., Haslett, S., Li, G., Schäfer, B., Siegel, K., Wieder, J., Adachi, K., Belosi, F., Carlsen, T., Decesari, S., Ebell, K., Gilardoni, S., Gysel-Beer, M., Henneberger, J., Inoue, J., Kanji, Z. A., Koike, M., Kondo, Y., Krejci, R., Lohmann, U., Maturilli, M., Mazzolla, M., Modini, R., Mohr, C., Motos, G., Nenes, A., Nicosia, A., Ohata, S., Paglione, M., Park, S., Pileci, R. E., Ramelli, F., Rinaldi, M., Ritter, C., Sato, K., Storelvmo, T., Tobo, Y., Traversi, R., Viola, A., and Zieger, P. , 2022: The ny-ålesund aerosol cloud experiment (NASCENT): Overview and first results. Bull. Am. Meteorol. Soc., 103(11):E2533 – E2558, doi:10.1175/BAMS-D-21-0034.1

2021

Sha, M. K., Langerock, B., Blavier, J. L., Blumenstock, T., Borsdorff, T., Buschmann, M., Dehn, A., De Mazière, M., Deutscher, N. M., Feist, D. G., García, O. E., Griffith, D. W. T., Grutter, M., Hannigan, J. W., Hase, F., Heikkinen, P., Hermans, C., Iraci, L. T., Jeseck, P., Jones, N., Kivi, R., Kumps, N., Landgraf, J., Lorente, A., Mahieu, E., Makarova, M. V., Mellqvist, J., Metzger, J., Morino, I., Nagahama, T., Notholt, J., Ohyama, H., Ortega, I., Palm, M., Petri, C., Pollard, D. F., Rettinger, M., Robinson, J., Roche, S., Roehl, C. M., Röhling, A. N., Rousogenous, C., Schneider, M., Shiomi, K., Smale, D., Stremme, W., Strong, K., Sussmann, R., Té, Y., Uchino, O., Velazco, V. A., Vigouroux, C., Vrekoussis, M., Wang, P., Warneke, T., Wizenberg, T., Wunch, D., Yamanouchi, S., Yang, Y., and Zhou, M. , September 2021: Validation of Methane and Carbon Monoxide from Sentinel-5 Precursor Using TCCON and NDACC-IRWG Stations. Atmospheric Meas. Tech., 14(9):6249–6304, doi:10.5194/amt-14-6249-2021

Mahieu, E., Fischer, E. V., Franco, B., Palm, M., Wizenberg, T., Smale, D., Clarisse, L., Clerbaux, C., Coheur, P., Hannigan, J. W., Lutsch, E., Notholt, J., Cantos, I. P., Prignon, M., Servais, C., and Strong, K. , September 2021: First Retrievals of Peroxyacetyl Nitrate (PAN) from Ground-Based FTIR Solar Spectra Recorded at Remote Sites, Comparison with Model and Satellite Data. Elem. Sci. Anthr., 9(1):00027, doi:10.1525/elementa.2021.00027

Engelmann, R., Ansmann, A., Ohneiser, K., Griesche, H., Radenz, M., Hofer, J., Althausen, D., Dahlke, S., Maturilli, M., Veselovskii, I., Jimenez, C., Wiesen, R., Baars, H., Bühl, J., Gebauer, H., Haarig, M., Seifert, P., Wandinger, U., and Macke, A. , September 2021: Wildfire Smoke, Arctic Haze, and Aerosol Effects on Mixed-Phase and Cirrus Clouds over the North Pole Region during MOSAiC: An Introduction. Atmospheric Chem. Phys., 21(17):13397–13423, doi:10.5194/acp-21-13397-2021

Crewell, S., Ebell, K., Konjari, P., Mech, M., Nomokonova, T., Radovan, A., Strack, D., Triana-Gómez, A. M., Noël, S., Scarlat, R., Spreen, G., Maturilli, M., Rinke, A., Gorodetskaya, I., Viceto, C., August, T., and Schröder, M. , July 2021: A Systematic Assessment of Water Vapor Products in the Arctic: From Instantaneous Measurements to Monthly Means. Atmospheric Meas. Tech., 14(7):4829–4856, doi:10.5194/amt-14-4829-2021

Karlsson, L., Krejci, R., Koike, M., Ebell, K., and Zieger, P. , June 2021: A Long-Term Study of Cloud Residuals from Low-Level Arctic Clouds. Atmospheric Chem. Phys., 21(11):8933–8959, doi:10.5194/acp-21-8933-2021

Steinbrecht, W., Kubistin, D., Plass-Dülmer, C., Davies, J., Tarasick, D. W., Von Der Gathen, P., Deckelmann, H., Jepsen, N., Kivi, R., Lyall, N., Palm, M., Notholt, J., Kois, B., Oelsner, P., Allaart, M., Piters, A., Gill, M., Van Malderen, R., Delcloo, A. W., Sussmann, R., Mahieu, E., Servais, C., Romanens, G., Stübi, R., Ancellet, G., Godin-Beekmann, S., Yamanouchi, S., Strong, K., Johnson, B., Cullis, P., Petropavlovskikh, I., Hannigan, J. W., Hernandez, J., Diaz Rodriguez, A., Nakano, T., Chouza, F., Leblanc, T., Torres, C., Garcia, O., Röhling, A. N., Schneider, M., Blumenstock, T., Tully, M., Paton-Walsh, C., Jones, N., Querel, R., Strahan, S., Stauffer, R. M., Thompson, A. M., Inness, A., Engelen, R., Chang, K., and Cooper, O. R. , March 2021: COVID-19 Crisis Reduces Free Tropospheric Ozone Across the Northern Hemisphere. Geophys. Res. Lett., 48(5):e2020GL091987, doi:10.1029/2020GL091987

Schoger, S. Y., Moisseev, D., Von Lerber, A., Crewell, S., and Ebell, K. , March 2021: Snowfall-Rate Retrieval for K- and W-Band Radar Measurements Designed in Hyytiälä, Finland, and Tested at Ny-Ålesund, Svalbard, Norway. J. Appl. Meteorol. Climatol., 60(3):273–289, doi:10.1175/JAMC-D-20-0095.1

2020

Lutsch, E., Strong, K., Jones, D. B. A., Blumenstock, T., Conway, S., Fisher, J. A., Hannigan, J. W., Hase, F., Kasai, Y., Mahieu, E., Makarova, M., Morino, I., Nagahama, T., Notholt, J., Ortega, I., Palm, M., Poberovskii, A. V., Sussmann, R., and Warneke, T. , November 2020: Detection and Attribution of Wildfire Pollution in the Arctic and Northern Midlatitudes Using a Network of Fourier-transform Infrared Spectrometers and GEOS-Chem. Atmospheric Chem. Phys., 20(21):12813–12851, doi:10.5194/acp-20-12813-2020

Dahlke, S., Hughes, N. E., Wagner, P. M., Gerland, S., Wawrzyniak, T., Ivanov, B., and Maturilli, M. , October 2020: The Observed Recent Surface Air Temperature Development across Svalbard and Concurring Footprints in Local Sea Ice Cover. Int. J. Climatol., 40(12):5246–5265, doi:10.1002/joc.6517

Nomokonova, T., Ebell, K., Löhnert, U., Maturilli, M., and Ritter, C. , April 2020: The Influence of Water Vapor Anomalies on Clouds and Their Radiative Effect at Ny-Ålesund. Atmospheric Chem. Phys., 20(8):5157–5173, doi:10.5194/acp-20-5157-2020

Gierens, R., Kneifel, S., Shupe, M. D., Ebell, K., Maturilli, M., and Löhnert, U. , March 2020: Low-Level Mixed-Phase Clouds in a Complex Arctic Environment. Atmospheric Chem. Phys., 20(6):3459–3481, doi:10.5194/acp-20-3459-2020

Schemann, V. and Ebell, K. , January 2020: Simulation of Mixed-Phase Clouds with the ICON Large-Eddy Model in the Complex Arctic Environment around Ny-Ålesund. Atmospheric Chem. Phys., 20(1):475–485, doi:10.5194/acp-20-475-2020

Ebell, K., Nomokonova, T., Maturilli, M., and Ritter, C. , January 2020: Radiative Effect of Clouds at Ny-Ålesund, Svalbard, as Inferred from Ground-Based Remote Sensing Observations. J. Appl. Meteorol. Climatol., 59(1):3–22, doi:10.1175/JAMC-D-19-0080.1

2019

Schranz, F., Tschanz, B., Rüfenacht, R., Hocke, K., Palm, M., and Kämpfer, N. , August 2019: Investigation of Arctic Middle-Atmospheric Dynamics Using 3 Years of H\textsubscript2 O and O\textsubscript3 Measurements from Microwave Radiometers at Ny-Ålesund. Atmospheric Chem. Phys., 19(15):9927–9947, doi:10.5194/acp-19-9927-2019

Wendisch, M., Macke, A., Ehrlich, A., Lüpkes, C., Mech, M., Chechin, D., Dethloff, K., Velasco, C. B., Bozem, H., Brückner, M., Clemen, H., Crewell, S., Donth, T., Dupuy, R., Ebell, K., Egerer, U., Engelmann, R., Engler, C., Eppers, O., Gehrmann, M., Gong, X., Gottschalk, M., Gourbeyre, C., Griesche, H., Hartmann, J., Hartmann, M., Heinold, B., Herber, A., Herrmann, H., Heygster, G., Hoor, P., Jafariserajehlou, S., Jäkel, E., Järvinen, E., Jourdan, O., Kästner, U., Kecorius, S., Knudsen, E. M., Köllner, F., Kretzschmar, J., Lelli, L., Leroy, D., Maturilli, M., Mei, L., Mertes, S., Mioche, G., Neuber, R., Nicolaus, M., Nomokonova, T., Notholt, J., Palm, M., Van Pinxteren, M., Quaas, J., Richter, P., Ruiz-Donoso, E., Schäfer, M., Schmieder, K., Schnaiter, M., Schneider, J., Schwarzenböck, A., Seifert, P., Shupe, M. D., Siebert, H., Spreen, G., Stapf, J., Stratmann, F., Vogl, T., Welti, A., Wex, H., Wiedensohler, A., Zanatta, M., and Zeppenfeld, S. , May 2019: The Arctic Cloud Puzzle: Using ACLOUD/PASCAL Multiplatform Observations to Unravel the Role of Clouds and Aerosol Particles in Arctic Amplification. Bull. Am. Meteorol. Soc., 100(5):841–871, doi:10.1175/BAMS-D-18-0072.1

Vassel, M., Ickes, L., Maturilli, M., and Hoose, C. , April 2019: Classification of Arctic Multilayer Clouds Using Radiosonde and Radar Data in Svalbard. Atmospheric Chem. Phys., 19(7):5111–5126, doi:10.5194/acp-19-5111-2019

Nomokonova, T., Ebell, K., Löhnert, U., Maturilli, M., Ritter, C., and O'Connor, E. , April 2019: Statistics on Clouds and Their Relation to Thermodynamic Conditions at Ny-Ålesund Using Ground-Based Sensor Synergy. Atmospheric Chem. Phys., 19(6):4105–4126, doi:10.5194/acp-19-4105-2019

2018

Knudsen, E. M., Heinold, B., Dahlke, S., Bozem, H., Crewell, S., Gorodetskaya, I. V., Heygster, G., Kunkel, D., Maturilli, M., Mech, M., Viceto, C., Rinke, A., Schmithüsen, H., Ehrlich, A., Macke, A., Lüpkes, C., and Wendisch, M. , December 2018: Meteorological Conditions during the ACLOUD/PASCAL Field Campaign near Svalbard in Early Summer 2017. Atmospheric Chem. Phys., 18(24):17995–18022, doi:10.5194/acp-18-17995-2018

Sato, K., Inoue, J., Yamazaki, A., Kim, J., Makshtas, A., Kustov, V., Maturilli, M., and Dethloff, K. , August 2018: Impact on Predictability of Tropical and Mid-Latitude Cyclones by Extra Arctic Observations. Sci. Rep., 8(1):12104, doi:10.1038/s41598-018-30594-4

Maturilli, M. and Ebell, K. , August 2018: Twenty-Five Years of Cloud Base Height Measurements by Ceilometer in Ny-Ålesund, Svalbard. Earth Syst. Sci. Data, 10(3):1451–1456, doi:10.5194/essd-10-1451-2018

Schranz, F., Fernandez, S., Kämpfer, N., and Palm, M. , March 2018: Diurnal Variation in Middle-Atmospheric Ozone Observed by Ground-Based Microwave Radiometry at Ny-Ålesund over 1 Year. Atmospheric Chem. Phys., 18(6):4113–4130, doi:10.5194/acp-18-4113-2018

Ritter, C., Burgos, M. A., Böckmann, C., Mateos, D., Lisok, J., Markowicz, K., Moroni, B., Cappelletti, D., Udisti, R., Maturilli, M., and Neuber, R. , January 2018: Microphysical Properties and Radiative Impact of an Intense Biomass Burning Aerosol Event Measured over Ny-Ålesund, Spitsbergen in July 2015. Tellus B Chem. Phys. Meteorol., 70(1):1539618, doi:10.1080/16000889.2018.1539618

Dekhtyareva, A., Holmén, K., Maturilli, M., Hermansen, O., and Graversen, R. , January 2018: Effect of Seasonal Mesoscale and Microscale Meteorological Conditions in Ny-Ålesund on Results of Monitoring of Long-Range Transported Pollution. Polar Res., 37(1):1508196, doi:10.1080/17518369.2018.1508196

2017

Kayser, M., Maturilli, M., Graham, R. M., Hudson, S. R., Rinke, A., Cohen, L., Kim, J., Park, S., Moon, W., and Granskog, M. A. , October 2017: Vertical Thermodynamic Structure of the Troposphere during the Norwegian Young Sea ICE Expedition (N-ICE2015). J. Geophys. Res. Atmospheres, doi:10.1002/2016JD026089

Rinke, A., Maturilli, M., Graham, R. M., Matthes, H., Handorf, D., Cohen, L., Hudson, S. R., and Moore, J. C. , September 2017: Extreme Cyclone Events in the Arctic: Wintertime Variability and Trends. Environ. Res. Lett., 12(9):094006, doi:10.1088/1748-9326/aa7def

Taquet, N., Meza Hernández, I., Stremme, W., Bezanilla, A., Grutter, M., Campion, R., Palm, M., and Boulesteix, T. , July 2017: Continuous Measurements of SiF 4 and SO 2 by Thermal Emission Spectroscopy: Insight from a 6-Month Survey at the Popocatépetl Volcano. J. Volcanol. Geotherm. Res., 341:255–268, doi:10.1016/j.jvolgeores.2017.05.009

Buchholz, R. R., Deeter, M. N., Worden, H. M., Gille, J., Edwards, D. P., Hannigan, J. W., Jones, N. B., Paton-Walsh, C., Griffith, D. W. T., Smale, D., Robinson, J., Strong, K., Conway, S., Sussmann, R., Hase, F., Blumenstock, T., Mahieu, E., and Langerock, B. , June 2017: Validation of MOPITT Carbon Monoxide Using Ground-Based Fourier Transform Infrared Spectrometer Data from NDACC. Atmospheric Meas. Tech., 10(5):1927–1956, doi:10.5194/amt-10-1927-2017

Ebell, K., Löhnert, U., Päschke, E., Orlandi, E., Schween, J. H., and Crewell, S. , February 2017: A 1-D Variational Retrieval of Temperature, Humidity, and Liquid Cloud Properties: Performance under Idealized and Real Conditions. J. Geophys. Res. Atmospheres, 122(3):1746–1766, doi:10.1002/2016JD025945

Wendisch, M., Brückner, M., Burrows, J., Crewell, S., Dethloff, K., Ebell, K., Lüpkes, C., Macke, A., Notholt, J., Quaas, J., Rinke, A., and Tegen, I. , January 2017: Understanding Causes and Effects of Rapid Warming in the Arctic. Eos, doi:10.1029/2017EO064803

Barthlott, S., Schneider, M., Hase, F., Blumenstock, T., Kiel, M., Dubravica, D., García, O. E., Sepúlveda, E., Mengistu Tsidu, G., Takele Kenea, S., Grutter, M., Plaza-Medina, E. F., Stremme, W., Strong, K., Weaver, D., Palm, M., Warneke, T., Notholt, J., Mahieu, E., Servais, C., Jones, N., Griffith, D. W. T., Smale, D., and Robinson, J. , January 2017: Tropospheric Water Vapour Isotopologue Data (H\textsubscript2\textsuperscript16 O, H\textsubscript2\textsuperscript18 O, and HD\textsuperscript16 O) as Obtained from NDACC/FTIR Solar Absorption Spectra. Earth Syst. Sci. Data, 9(1):15–29, doi:10.5194/essd-9-15-2017

Dahlke, S. and Maturilli, M. , 2017: Contribution of Atmospheric Advection to the Amplified Winter Warming in the Arctic North Atlantic Region. Adv. Meteorol., 2017:1–8, doi:10.1155/2017/4928620

2016