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Estimating basal properties of ice streams from surface measurements:a non-linear Bayesian inverse approach applied to synthetic data
basal properties ice streams surface measurements non-linear Bayesian inverse approach
2010/2/4
We propose a new approach to indirectly estimate basal properties of ice streams, i.e. bedrock topography and basal slipperiness, from observations of surface topography and surface velocities. We dem...
Use of resistivity measurements to detect urban caves in Mexico City and to assess the related hazard
resistivity measurements urban caves Mexico City related hazard
2009/12/14
In the XIX century when Mexico City was much smaller than at present, there was non-regulated mining of building materials in a region of tuffs northwest of the city in an inhabited countryside. With ...
Simultaneous measurements of CO2 and water exchanges over three agroecosystems in South-West France
Simultaneous measurements CO2 and water exchanges three agroecosystems South-West France
2010/1/21
During the last few decades, many studies have been performed to determine water and carbon budgets of broadleaf and deciduous forests, crops and grasslands. However, since most measurements have been...
Use of O2 airglow for calibrating direct atomic oxygen measurements from sounding rockets
O2 airglow direct atomic oxygen measurements sounding rockets
2010/2/8
Accurate knowledge about the distribution of atomic oxygen is crucial for many studies of the mesosphere and lower thermosphere. Direct measurements of atomic oxygen by the resonance fluorescence tech...
Recalculation of an artificially released avalanche with SAMOS and validation with measurements from a pulsed Doppler radar
an artificially released avalanche SAMOS a pulsed Doppler radar
2009/12/9
A joint experiment was carried out on 10 February 1999 by the Swiss Federal Institute for Snow and Avalanche Research (SFISAR) and the Austrian Institute for Avalanche and Torrent Research (AIATR, of ...
Radon measurements along active faults in the Langadas Basin, northern Greece
Radon measurements active faults the Langadas Basin, northern Greece
2009/12/9
A network of three radon stations has been established in the Langadas Basin, northern Greece for radon monitoring by various techniques in earthquake prediction studies. Specially made devices with p...
Airborne lidar reflectance measurements at 1.57 μm in support of the A-SCOPE mission for atmospheric CO2
Airborne lidar reflectance measurements 1.57 μm A-SCOPE mission atmospheric CO2
2010/2/8
The characteristics of the lidar reflectance of the Earth's surface is an important issue for the IPDA lidar technique (integrated path differential absorption lidar) which is the proposed method for ...
Rate of Iceland Sea acidification from time series measurements
Rate Iceland Sea acidification time series measurements
2010/1/21
The Iceland Sea is one part of the Nordic Seas. Cold Arctic Water prevails there and the deep-water is an important source of North Atlantic Deep Water. We have evaluated time series observations of m...
Uncertainty analysis of computational methods for deriving sensible heat flux values from scintillometer measurements
Uncertainty analysis computational methods sensible heat flux values scintillometer measurements
2010/2/8
The use of scintillometers to determine sensible heat fluxes is now common in studies of land-atmosphere interactions. The main interest in these instruments is due to their ability to quantify energy...
Cloud sensitivity studies for stratospheric and lower mesospheric ozone profile retrievals from measurements of limb-scattered solar radiation
Cloud sensitivity stratospheric and lower mesospheric ozone profile limb-scattered solar radiation
2010/2/8
Clouds in the atmosphere play an important role in reflection, absorption and transmission of solar radiation and thus affect trace gas retrievals. The main goal of this paper is to examine the sensit...
Airborne multi-axis DOAS measurements of atmospheric trace gases on CARIBIC long-distance flights
Airborne multi-axis DOAS measurements atmospheric trace gases CARIBIC long-distance flights
2010/2/8
A DOAS (Differential Optical Absorption Spectroscopy) instrument was implemented and operated onboard a long-distance passenger aircraft within the framework of the CARIBIC project (Civil Aircraft for...
Non-Gaussian Bayesian retrieval of tropical upper tropospheric cloud ice and water vapour from Odin-SMR measurements
Non-Gaussian Bayesian retrieval tropical upper tropospheric cloud ice water vapour
2010/2/8
Improved Odin-SMR retrievals of upper tropospheric water are presented. The new retrieval algorithm retrieves humidity and cloud ice mass simultaneously and takes into account of cloud inhomogeneities...
In-situ measurements of oxygen,carbon monoxide and greenhouse gases from Ochsenkopf tall tower in Germany
In-situ measurements oxygen carbon monoxide greenhouse gases Ochsenkopf tall tower
2010/2/8
We present 2.5 years (from June 2006 to December 2008) of in-situ measurements of CO2, O2, CH4, CO, N2O and SF6 mixing ratios sampled from 23, 90 and 163 m above ground on the Ochsenkopf tower in the ...
A single gas chromatograph for accurate atmospheric mixing ratio measurements of CO2,CH4,N2O,SF6 and CO
gas chromatograph atmospheric mixing ratio measurements CO2 CH4 N2O SF6 CO
2010/2/8
We present an adapted gas chromatograph capable of measuring simultaneously and semi-continuously the atmospheric mixing ratios of the greenhouse gases CO2, CH4, N2O and SF6 and the trace gas CO with ...
Comparison of NLC particle sizes derived from SCIAMACHY/Envisat observations with ground-based LIDAR measurements at ALOMAR (69°N)
NLC particle sizes SCIAMACHY/Envisat observations ground-based LIDAR measurements
2010/2/8
SCIAMACHY, the Scanning Imaging Absorption spectroMeter for Atmospheric CHartographY has provided measurements of limb-scattered solar radiation in the 220 nm to 2380 nm wavelength range since summer ...