Measurements of metastable helium in Earth’s atmosphere by resonance lidar [PDF]
Nature Communications, 2022 Metastable helium is a promising target for remote-sensing observations of Earth’s thermosphere. This paper reports on the development of a resonance lidar capable of resolving metastable helium density profiles and presents initial ...
Bernd Kaifler +4 more
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Reduced cloud cover errors in a hybrid AI-climate model through equation discovery and automatic tuning [PDF]
Scientific ReportsCloud-related parameterizations remain a leading source of uncertainty in climate projections. Although machine learning holds promise for Earth system models (ESMs), many data-driven parameterizations lack interpretability, physical consistency, and ...
Arthur Grundner +5 more
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Determination of the emission rates of CO2 point sources with airborne lidar [PDF]
Atmospheric Measurement Techniques, 2021 Anthropogenic point sources, such as coal-fired power plants, produce a major share of global CO2 emissions. International climate agreements demand their independent monitoring.
S. Wolff +6 more
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Investigating an indirect aviation effect on mid-latitude cirrus clouds – linking lidar-derived optical properties to in situ measurements [PDF]
Atmospheric Chemistry and Physics, 2023 Aviation has a large impact on the Earth's atmosphere and climate by various processes. Line-shaped contrails and contrail cirrus clouds lead to changes in the natural cirrus cloud cover and have a major contribution to the effective radiative forcing ...
S. Groß +9 more
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Rayleigh Wind Retrieval for the Aladin Airborne Demonstrator of the Aeolus Mission Using Simulated Response Calibration [PDF]
EPJ Web of Conferences, 2020 Aeolus, launched on 22 August 2018, is the first ever satellite to directly observe wind information from space on a global scale. An airborne prototype called ALADIN Airborne Demonstrator (A2D) was developed at the German Aerospace Center (DLR) for ...
Zhai Xiaochun +6 more
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Aircraft type influence on contrail properties [PDF]
Atmospheric Chemistry and Physics, 2013 The investigation of the impact of aircraft parameters on contrail properties helps to better understand the climate impact from aviation. Yet, in observations, it is a challenge to separate aircraft and meteorological influences on contrail formation ...
P. Jeßberger +8 more
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The 1-way on-line coupled model system MECO(n) – Part 4: Chemical evaluation (based on MESSy v2.52) [PDF]
Geoscientific Model Development, 2016 For the first time, a simulation incorporating tropospheric and stratospheric chemistry using the newly developed MECO(n) model system is performed. MECO(n) is short for MESSy-fied ECHAM and COSMO models nested n times.
M. Mertens +4 more
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The airborne mass spectrometer AIMS – Part 2: Measurements of trace gases with stratospheric or tropospheric origin in the UTLS [PDF]
Atmospheric Measurement Techniques, 2016 Understanding the role of climate-sensitive trace gas variabilities in the upper troposphere and lower stratosphere region (UTLS) and their impact on its radiative budget requires accurate measurements.
T. Jurkat +5 more
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Trace gas composition in the Asian summer monsoon anticyclone: a case study based on aircraft observations and model simulations [PDF]
Atmospheric Chemistry and Physics, 2017 We present in situ measurements of the trace gas composition of the upper tropospheric (UT) Asian summer monsoon anticyclone (ASMA) performed with the High Altitude and Long Range Research Aircraft (HALO) in the frame of the Earth System Model Validation
K.-D. Gottschaldt +10 more
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Aerosol - Cloud Target Classification in HALO Lidar/Radar Collocated Measurements [PDF]
EPJ Web of Conferences, 2020 Particle attenuated backscatter and depolarization ratio at 532 nm from the WALES (Water Vapor Lidar Experiment in Space) instrument are used in combination with the radar reflectivity from the 35 GHz MIRA35 cloud radar in order to perform an aerosol ...
Marinou Eleni +6 more
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