The section of physics and chemistry of the atmosphere is composed of several science teams. Research topics include measurements of trace gases and aerosols by remote sensing and in-situ observations, radiative transfer modelling, laboratory spectroscopy, and scientific support of atmospheric satellite missions. The structure of the whole section can be seen from the following diagram: [3.530 KB]
Research Teams:
Greenhouse and carbon gases
The focus of the IUP Carbon GHG Group is to retrieve information on atmospheric carbon gases (focus: CO2, CH4, CO) from satellites and aircraft instruments and to interprete the observations in terms of surface sources and sinks (emissions and uptake). more...
Aerosol and Cloud Research
Aerosol and cloud research: Main topic of this group is the investigation of global optical and microphysical parameters of clouds and aerosols from space. more...
DOAS
We use the DOAS (Differential Optical Absorption Spectroscopy) method to retrieve atmospheric trace gas concentrations from UV/visible spectra of scattered sunlight. We use data from satellite instruments, aircraft measurements, and data from ground-based UV/visible instruments. more...
UVSat
The UV Satellite Data and Science Group focuses on ozone measurements in the UV spectral range from satellites. We investigate ozone columns, ozone vertical profiles and tropospheric ozone. Scientific goals are trend analyses ("recovery of the ozone layer", "air pollution"), the interaction between ozone and climate, and ozone losses in polar regions ("ozone hole"). more...
Limb Retrieval and Radiative Transfer
The LRRT group focuses on the retrieval of the vertical distributions of atmospheric species (O3, NO2, BrO, H2O) and stratospheric aerosol characteristics (extinction, particle size disribution) from space borne measurements of the scattered solar light in UV-Visible-NIR-SWIR spectral range. more...
TROLAS
The activities of the TROLAS group (Tropospheric Radical Observations and Laser Absorption Spectroscopy) focus on the investigation of the atmospheric chemistry related to the photochemistry and the mechanisms of free radical reactions involved in the formation and depletion of O3 in the troposphere. more...
Molecular Spectroscopy and Chemical Kinetics
Molecular Spectroscopy and Chemical Kinetics: Our work is to provide accurate reference data for atmospheric remote sensing, to study molecular physics and chemistry related to atmospheric problems, and to determine atmospheric concentrations by optical methods. more...
Electronics, Optics and Sensors
The main areas are electronics and optics specialties as well as design and test of airborne and balloonborne sensors and components. With MaMAP, a new airborne 2 channel NIR-SWIR grating spectrometer system for simultaneous remote measurements of tropospheric methane (CH4), carbon dioxide (CO2) and oxygen (O2) was introduced. more...
Phytooptics
A cooperation between AWI and IUP that studies the retrieval of new biooptical information in addition to data of the ocean color sensors MERIS, SeaWiFS and MODIS. Besides remote sensing retrievals, biooptical and biochemical in-situ parameters of phytoplankton and light conditions are measured and models are used to calculate radiative transfer and primary production. more...
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Director:
The field of research of "Physics and Chemistry of the Atmosphere" is directed by Prof. Hartmut Bösch.
Satellite Projects of the IUP Bremen:
Greenhouse and carbon gases:In order to perform global measurements of CO2 and CH4 after SCIAMACHY we are using data from other satellite instruments (GOSAT, OCO-2, TROPOMI, CO2M, ...).
SCIAMACHY (Scanning Imaging Absorption Spectrometer for Atmospheric CHartographY) is a spectrometer designed to measure sunlight, transmitted, reflected and scattered by the earth atmosphere or surface in the ultraviolet, visible and near infrared wavelength region (240 - 2380 nm) at moderate spectral resolution (0,2 - 1,5 nm). It was launched 2002 as part of the ENVISAT payload. The SCIAMACHY Mission ended April 2012 due to a general failure of ENVISAT.
GOME (Global Ozone Monitoring Experiment) is a nadir viewing UV/VIS spectrometer aboard the ERS-2 satellite. The scientific projects at IUP encompass: radiative transfer modelling, retrieval algorithm development, validation of GOME data products, and scientific case studies. The whole GOME data can now be found at one place. The GOME Mission ended July 2011.
SCIATRAN The radiative transfer program has been designed to allow fast and accurate simulation of radiance spectra as measured from space with the passive remote sensing UV-Vis-NIR spectrometers SCIAMACHY and GOME. The software package incorporates a radiative transfer model and retrieval algorithms which can be adapted to solve a wide range of scientific tasks.
