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Land Surface – Atmosphere interactions from global water and energy perspective


March 16th-18th, 2021


The workshop seeks to better understand the uses and limitations of the newly released GEWEX Global, 1 degree, 3-hourly Integrated Water and Energy products for use in understanding land surface – atmosphere interactions.  By examining the relationship between surface properties (including temperature, moisture, and albedo) with estimated surface fluxes, the boundary layer, convection and the movement of energy, the workshop seeks to both assess the overall consistency of the GEWEX integrated product, as well as identify additional parameters that should be included in the product going forward.  Talks are expected to address the consistency both from the global satellite perspective, as well as existing ground based measurement sites such as ARM that can shed additional light on critical processes at a local scale.  Talks that highlight the benefit of adding particular datasets to the Integrated product for new process insight are also welcomed.

Event Details:


Lorenzana Palace Auditorium (Paraninfo) and Historical Library. Universidad de Castilla – La Mancha in Toledo, Spain


March 16-18, 2021.

Specific outcome: A letter to funding agencies advising them of potential new fruitful research related to integrated land surface-atmosphere process studies. Organizing Committee:
  • Christian Kummerow, Colorado State University, USA
  • Francisco J. Tapiador, U. Castilla – La Mancha, Toledo, Spain
  • Isabel Trigo, Instituto Português do Mar e da Atmosfera, Lisbon, Portugal
  • Wouter Dorigo, Vienna University of Technology (TU Wien), Austria
  • Jim Mather, ARM, Pacific Northwest National Laboratory, USA


Monday 16th, March

   9:00 – 9:30 Introductions & Meeting Objectives
  9:30 – 11:00 Presentations of Interest from Participants
11:00 – 11:30 Break
11:30 – 14:00 Presentations from Participants
14:00 – 15:30 Lunch
16:00 – 18:00 Presentations from Participants
20:30 – Group Dinner (organized by self financed)

Tuesday 17th, March

  9:00 – 11:00 Discussion 1 led by Isabel Trigo: Exploring Land Surface Temperature to understand and monitor surface processes – combining LST with other remote sensing variables to infer hydrological regimes and assess surface energy fluxes
11:00 – 11:30 Coffee Break
11:30 – 13:30 Discussion 2 led by Wouter Dorigo: Soil-vegetation-atmosphere Feedbacks
13:30 – 15:30 Lunch
15:30 – 17:30 Discussion 3: led by Jim Mather: Linking high-resolution and global-scale measurements for improved data quality and multi-scale applications
17:30 – 18:30 Wrap Up: An open discussion on topics of the day

Wednesday 18th, March

9:00 – 12:00 Discussion led by Chris Kummerow: Integrated Product Future (how to best evolve the GEWEX Integrated product to maximize its utility)



The best way to get to Toledo from Madrid is the high-speed train from Atocha rail station (35 min trip; I recommend booking in advance). Bus is also a possibility. It is cheap and convenient.

Renting a car from the airport is not recommended, as Toledo city center is a pedestrian area and parking lots are costly.

Once in Toledo, city buses run from the rail and bus stations to Zocodover square in the city center. Taxis to get to the city center or straight to the hotels are also cheap (about 8 EUR) and convenient. You can even walk: there is a mechanical escalator to get to the top of the city once you cross the Alcantara bridge (Puente de Alcántara).

To get to Atocha rail station from Madrid airport there are many possibilities: underground (“metro”), 24-h bus (5 EUR, Terminus is Atocha station so there is no chance of missing the stop), taxi (30 EUR flat rate), and regional train (also convenient).


Toledo is a touristic city plenty of accommodation, but March can be a busy month. We advice to book well in advance in any hotel in the city center (“the casco”, map attached). The venue is at walking distance from any hotel within the river perimeter to the Avenida de la Cava.
The following hotels are recommended by the locals:

  1. Eugenia de Montijo
  2. Hacienda del Cardenal
  3. San Juan de los Reyes
  4. Alfonso VI
  5. Pintor El Greco


Coffee breaks will be provided by the organization. As with hotels, the city center is full of restaurants for lunch and dinner. Please note the peculiar meal schedule in Spain: proper lunches are served not before 13:30 (typically 13:30-15:30) and dinners not before 21:00 (typically 21:00-22:30). Nonetheless, Toledo is a touristic place and you can get food (“tapas”) basically anytime.


Toledo old city center (“Casco”), with a pin for the venue (“Palacio Universitario Lorenzana”), also featuring the rail station (on the top-right of the second map, in blue).
Click to view on Google Maps