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HALO - HAMP
Using the HALO Microwave Package (HAMP) for cloud and precipitation research
Summary
Representation of cloud and precipitation processes is one of the largest sources of uncertainty in climate and weather predictions. This project aims at exploring the potential of the novel HALO microwave package (HAMP) for airborne cloud and precipitation research by participating in all cloud related missions of the research aircraft HALO. HAMP is a unique combination of a 23 channel microwave radiometer and a cloud radar. To make HAMP a valuable research instrument, we will develop synergistic retrieval algorithms which convert the measured passive and active microwave signals into profiles of temperature, humidity and hydrometeor content with corresponding error estimates. A comprehensive evaluation of HAMP with existing observational systems, like e.g. satellites and ground based remote sensing super-sites will allow an assessment of its added value. In particular, we will analyze whether HAMP can resolve the fine-scale structure of cloud and precipitation fields and can thus relate point observations with area averaged data from satellites and models. Finally, observations from the NARVAL campaign will be used to demonstrate the benefit of HAMP for model development by revising the frequently used model assumption that shallow convective clouds do not precipitate.
Objectives
- Validation of satellite estimates of cloud properties and precipitation by performing detailed in situ and remote sensing observations of cloud vertical structure
- Perform process studies on cloud and precipitation for evaluating and improving cloud parameterizations in weather forecast and climate models
The Team
| University of Cologne | |
|---|---|
| Dr. Emiliano Orlandi | eorlandi@meteo.uni-koeln.de |
| Dr. Mario Mech | mech@meteo.uni-koeln.de |
| Prof. Dr. Susanne Crewell | crewell@meteo.uni-koeln.de |
| University of Hamburg | |
| Dr. Andrea Lammert-Stockschläder | andrea.lammert@zmaw.de |
| Jun.-Prof. Dr. Felix Ament | felix.ament@zmaw.de |
Publications
Conference contributions
HAMP - Erste Retrievalstudien für das Mikrowellen-Paket auf HALO Mech, M., S. Crewell, G. Peters, and L. Hirsch DACH Meteorologentagung 2010, 20.-24.9.2010, Bonn, Germany.
HAMP - The Microwave Package on the „High Altitude and LOng range“ research aircraft HALO Mech, M., G. Peters, L. Hirsch, and S. Crewell 3rd International Workshop on Satellite-based Snowfall Measurements (IWSSM), Grainau, Germany, 30.3.-2.4.2011.
Retrieval of temperature, humidity, and integrated hydrometeor contents from observations with the microwave package HAMP on the High Altitude and LOng range aircraft HALO. Mech, M., S. Crewell, U. Löhnert, and E. Orlandi EUMETSAT Meteorological Satellite Conference 2011, Oslo, Norway, 5.-9.9.2011.
Retrieval development and test for HAMP, the HALO microwave package. Orlandi, E., M. Mech, S. Crewell, A. Lammert, A. Seifert and L. Hirsch Microwave Radiometry and Remote Sensing of the Environment (MICRORAD) conference, Tor Vergata, Italy, 5.-9.03.2012.
Active and passive microwave retrieval algorithm for hydrometeor concentration profiles: application to the HAMP instrument. Orlandi, E., M. Mech, S. Crewell, A. Lammert AGU fall meeting, San Francisco, US, 3-7.12.2012.
Papers (in preparation)
Combining Ground-based and Satellite Measurements in the Atmospheric State Retrieval: Assessment of the Information Content. Ebell, K., E. Orlandi, A. Hunerbein, U. Lohnert, and S. Crewell In prepapration for Journal of Geophysical Research.
HAMP - the microwave package on the High Altitude and LOng range research aircraft HALO. Mech, M., E. Orlandi, S. Crewell, F. Ament, and L. Hirsch In prepapration for Atmospheric Measurement Techniques