Conveners
Total column water vapour: Observations & scientific applications
- Marc Schröder (DWD Offenbach)
- Daan Hubert (BIRA-IASB)
Total column water vapour: Observations and climate analysis
- Tim Trent (Universiy of Leicester)
- René Preusker (Freie Universität Berlin)
Total column water vapour: Model intercomparisons
- Jorge Eiras Barca (University of Vigo)
- Hao Ye (University of Reading)
Water vapor is an important component in the water and energy cycle of the Arctic. With respect to Arctic amplification, changes of water vapor are of high interest but are difficult to observe due to the sparsity of data in that region. The ACLOUD/PASCAL campaign performed in May/June 2017 in the Arctic North Atlantic sector offers the opportunity to investigate the quality of various...
Most of the Eulerian and Lagrangian models used in moisture transport analysis rely on reanalysis products for their initial and boundary conditions. Although these phenomena are varied, atmospheric rivers (ARs) and low-level jets (LLJs) are the two most prominent phenomena. We have compared the vertically integrated water vapor column (IWV) fields provided by the two most commonly used...
The Mediterranean climate is usually characterized by warm and hot summers intermingled with mild and rainy winters.
A common feature shared by all Mediterranean regions is the occurrence of Atmospheric Rivers (ARs). ARs are relatively narrow and elongated filaments of high water vapour transport, which are associated with tropical moisture exports and can lead to intense precipitation...
Total column water vapour (TCWV) can be retrieved in the visible “blue” spectral range (430-450nm) using Differential Optical Absorption Spectroscopy (DOAS). This spectral range offers several advantages, for instance it allows for accurate, straightforward retrievals over ocean and land even under partly-cloudy conditions.
To investigate climate changes in the global TCWV distribution, we...
The Air Mass Corrected Differential Optical Absorption Spectroscopy (AMC-DOAS) approach to derive water vapour vertical columns was originally developed for Global Ozone Monitoring Experiment (GOME) on ERS-2 and also has been applied to measurements from SCIAMACHY and GOME-2. Recently, it has been applied to measurements from TROPOMI onboard Sentimel-5P.
Currently there is no operational...
Remote sensing data are often used to assess model forecasts on multiple scales, generally by confronting past simulations to estimates. My work consists of developing a novel probabilistic method that evaluates tropical atmospheric relative humidity (RH) profiles simulations by confronting them to probability distributions of finer scale satellite estimates. This probabilistic approach allows...
The Advanced Infra-Red WAter Vapour Estimator (AIRWAVE) algorithm was developed to derive the Total Column of Water Vapor for the ATSR-like instruments. AIRWAVE exploits TIR channels radiances over the water surfaces in cloud-free scenarios.
The first version of the dataset (v1) was part of the G-VAP archive. A second version of the code was produced (v2) where some of the shortcomings of...
Water vapor is strongly associated with large-scale atmospheric circulation. Here the water vapor variation in the tropical region (30S ~ 30N) is analyzed for 7 global climate models (CMIP6 framework) and the new global water vapor climate data records (CDR) generated within the ESA Water Vapor CCI+ project (WV_cci). The water vapor data are decomposed into large-scale dynamical regimes...
Increases in tropospheric water vapour with warming drive a powerful amplifying effect on climate change, alter the surface and atmospheric energy balance and at low altitudes enhance moisture transport into weather systems leading to more intense precipitation. An evaluation of water vapour changes and variability simulated by a selection of CMIP6 climate model “historical” and “amip”...
Biases in model simulations of present-day climate do not only affect confidence in the capability of the models to correctly reproduce current climate but also raise concerns about the accurate representation future climate change. In this study we investigate the performance of state-of-the-art global climate models from the sixth phase of the Coupled Model Intercomparison Project (CMIP6) by...
With the recent European project PRIMAVERA and the continuing international HighResMIP comparison, there is now a great deal of data to look at the effect of resolutions on general circulation models. In the Hadley Centre's, while globally-integrated quantities such as climate sensitivity seem largely stable when resolution is changed, the impacts of climate change are of course felt locally,...
Water vapour is a crucial component of the Earth climate system. As the largest natural contributor to the greenhouse effect, it also has the capacity to regulate evaporative and transpiration processes. Therefore, water vapour is closely connected to both the global hydrological cycle and energy budget.
The time water spends in the atmosphere between evaporation and precipitation is...
