organized by EUMETSAT and IMEDEA

21-23 October 2013, Esporles (Mallorca, Spain)


1) Aim of the workshop.

There is a large variety of satellite-derived products such as the Land or Sea Surface Temperatures, Soil Moisture, Leaf Area Index, among others, with a lot of applications in meteorology, oceanography, agriculture, etc. These fields are built from images taken from the satellites that are processed and corrected through a series of algorithms that will determine the quality and the proper use of the products. It is important that the satellite-derived final users have this information when they use a product, specially when other sources of information are considered in his/her research. The aim of this workshop is to open the dialogue between the users of satellite products with the developers of the algorithms and people working on the organization of the database of the products. The users of the satellite-derived products will learn the limitations of the products they use and if there are others more adequate for their research. The developers can learn what the main uses of their products are and which algorithms need further research to properly satisfy the user's requirements. Finally, some members from the EUMETSAT staff will explain how the database is organized and the status of development of each of the products.

The workshop is organized in 5 topics/blocks and the responsible of each block gathers the concerns/queries of each participant. There is one expert in each block that works in developing satellite-derived products to favour the discussion. The workshop will be held in the seminar room IMEDEA from 21st to 22nd October 2013 and a practical seminar conference on 23rd October 2013.

2) The workshop is organized in 5 blocks:

A) Satellite-derived LST and Soil Moisture: range of validity and needed improvements

Responsible: Joan Cuxart,, Universitat de les Illes Balears, Palma de Mallorca, Spain
Invited expert: Vicente Caselles, Universitat de València, València, Spain

This block is intended to allow environmental users to know how the Land-Surface Temperature and Soil Moisture fields (and of any other relevant parameter) are retrieved from the radiative data captured by the satellites, what are the key hypotheses made to do so and their limitations, and how these data are validated with direct information at the surface. This may allow the environmental users to be more aware of these data, how to use them with good criteria and how to contribute to their improvement.

B) Verification of high-resolution mesoscale simulations through satellite-derived products

Responsible: Maria A. Jiménez,, Institut Mediterrani d ́Estudis Avançats, Esporles, Spain
Invited expert: Sandra Coelho e Freitas, Instituto Portugues do Mar e da Atmosfera, Lisboa, Portugal

In this block we will discuss the use of satellite-derived products as a verification tool for high-resolution mesoscale simulations. Typically, the verification of these runs (domains of hundreds kilometres and horizontal resolutions of hundreds of meters) is made through the comparison of the model outputs to available observations (surface stations and soundings at one specific location). The advantage of using satellite-derived products, such as the Land-Surface Temperature, is that it is possible to check if the model is able to reproduce the main patterns.

C) The use of satellite-derived products to study the distribution of aerosols

Responsible: Eva Mayol and Maria A. Jiménez,, Institut Mediterrani d ́Estudis Avançats, Esporles, Spain
Invited expert: Jan Cermak, Ruhr-Universität Bochum, Bochum, Germany

This block is intended to learn more about the characteristics of the available aerosol products (temporal and spatial resolutions, errors, assumptions to derive this products, how they are compared to surface observations, ...). The main interest is focused on the small particles (with radius less than the submicron). For instance, air pollution studies indicate that these particles affect human health by penetrating to the deepest part of human lungs. Also, we will discuss about the possibility to get estimations of the amount of bioaerosol particles in the atmosphere.

D) Characterizing ocean circulation with satellite altimetry: present status and challenges

Responsible: Ananda Pascual,, Institut Mediterrani d ́Estudis Avançats, Esporles, Spain
Invited expert: Marie-Hélène Rio, CLS Space Oceanography Division, Ramonville, France

This block is intended to provide a review of recent advances in the use of satellite altimetry with the aim of observing and understanding ocean circulation. We will focus on (1) the study of the mesoscale processes that drive most of the variability at mid and high latitudes; (2) the combination of altimetry data with additional remote and in situ measurements to better exploit 3D dynamics; and (3) the development of mean dynamic topographies for the analysis of mean currents. The present limitations and challenges for the next decade will be discussed.

E) Sea Surface Temperature satellite products in support of ocean research and operational activities

Responsible: Simón Ruiz,, Institut Mediterrani d ́Estudis Avançats, Esporles, Spain
Invited expert: Pierre LeBorgne, Meteo France/CMS, Lannion, France

This block is intended to provide an update of the Sea Surface Temperature products available for ocean research and operational oceanography, with particular emphasis on mesoscale and submesoscale processes in the open ocean. First, the concepts of skin, sub-skin and foundation temperatures will be reviewed. Secondly, the discussion will be focused on i) high spatial resolution SST products from infrared instruments ii) low spatial resolution products from microwave instruments iii) quality and validation of SST satellite products with in-situ data. A last issue to be discussed will be the use and limitations of all these products in coastal areas.