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ULM Project Ulrich Lemmin. Baikal-Selenga workshop, Geneva, 31 October 2012. Scientific objectives. Study the dynamical processes occurring in the boundary layer between the atmosphere and lakes or land using a light, highly mobile, airborne platform. Study areas:

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slide1

ULM Project

  • Ulrich Lemmin

Baikal-Selenga workshop, Geneva, 31 October 2012

slide2

Scientific objectives

  • Study the dynamical processes occurring in the boundary layer between the atmosphere and lakes or land using a light, highly mobile, airborne platform.
  • Study areas:
    • Air/water exchange of heat and gases
    • Micrometeorology
    • Sediment suspension in rivers and lakes
    • Biomass dynamics in lakes
    • Vegetation dynamics on land
    • Aerosol dynamics
    • Forest fires
slide3

Scientific objectives

  • Understanding of
    • System dynamics of air/water interaction
    • Climate change effects
    • Greenhouse gas transport
    • Atmospheric pollution distribution
  • Applications in
    • Environmental monitoring
    • Land/lake management
    • Biomass assessment
    • Carbon accounting
slide4

Scientific objectives

  • These studies will provide information which will be complementary to
  • Satellite data, providing higher spatial and temporal resolution
  • Ground-based measurements, providing greater point density.
  • This allows studying boundary layer process dynamics with unprecedented resolution.
slide5

Partners

  • Switzerland:
  • Ecole Polytechnique Fédérale Lausanne (EPFL)
  • France:
  • Laboratoire des Sciences du Climat et de l’Environnement, CEA-CNRS-UVSQ, Orme des Merisiers, 91191 Gif-sur-Yvette, France.
  • Russia:
    • Moscow State University
    • BAIKAL Institute of Nature Management
    • (Siberian Branch of RAS)
slide7

ULM Project

Proposed sub projects:

13/17

slide8

ULM Project

Time table:

Lake Geneva May 2013

Lake Geneva-Lake Baikal June 2013

Lake Baikal July 2013

13/17

slide10

Possible scientific objectives for flights

over Lake Geneva and Baikal

  • Study the dynamical processes occurring close to and above the lakes, which are mainly due to the presence of mountains. The airborne lidar offers a unique opportunity to identify the structure of the lower atmosphere in the vicinity of the lakes. Modeling groups are required for the post-treatment (one identified in France).
  • Assess the capability of forest to regrow after forest fires in the Lake Baikal area. The lidar will measure the canopy top. Forest fires are frequent in this area and have occurred at different periods in the past. The study areas remain to be defined around Lake Baikal.

Expérience Léman – Baïkal

slide11

Firing through the helice

Typical flight plans with lidar

for atmospheric studies

Two ULAs (ULM in French) will fly in formation.

  • The ULA carrying the Raman lidar (lidar-ULA) will fly ahead between 3000 and 4000 m above the ground level (agl).
  • The ULA carrying the fluxmeters will fly behind the lidar-ULA and will be equiped by a Rayleigh-Mie lidar.
slide12

Instruments used

  • The instruments make up the payloads of 2 ultra-light aircrafts (ULA).
  • ULA 1 (remote sensing)
    • Raman lidar
    • Meteorological probe (pressure, temperature, relative humidity)
    • GPS
    • Artificial horizon

ULA flight above Gibraltar bay

(Summer 2011)

Expérience Léman – Baïkal

slide13

Instruments used

  • The instruments make up the payloads of 2 ultra-light aircrafts (ULA).
  • ULA 2 (in situ measurements)
    • Rayleigh-Mie lidar
    • Meteorological probe (pressure, temperature, relative humidity)
    • Pyranometer (visible solar irradiance)
    • Artificial horizon
    • GPS
slide16

Airborne lidar experiment from

Lake Geneva (Léman) to Baikal

Laboratoire des Sciences du Climat et de l’Environnement, CEA-CNRS-UVSQ, Orme des Merisiers, 91191 Gif-sur-Yvette, France.

Contact: patrick.chazette@cea.fr

Expérience Léman – Baïkal

slide17

Scientific objectives during the main trip

between Lake Geneva and Lake Baikal

  • Identification of the biomass burning plume encountered during the trip between the Lake Geneva and Lake Baikal (directly from the measurements)
  • Characterization of the biomass burning plumes using the aerosol optical properties (directly from the measurements)
  • Use of the lidar-derived parameters (vertical atmospheric structures, aerosol extinction coefficient) to constrain the regional chemistry-transport models for assessing the contributions of forest boreal fires to the atmospheric composition (requires modeling groups)
slide18

Leman-Baikal project

In the area along the trajectory, the atmosphere is poorly documented from measurements at such spatial resolution. Only satellite observations are available.

Lac Baïkal

Route between the lakes

Lac Leman

Flight plans as previously defined

slide19

Collaboration with Russian and French partners:

  • EPFL scientists are invited to
  • participate in the overland flight
  • and the work around Lake Baikal.
  • Russian partners have defined
  • areas of collaboration and prepared
  • project proposals.

13/17

slide22

Collaboration with Russian and French partners in the Lake Baikal area:

  • Specific study areas (hot spots)
  • are being defined.

13/17

slide23

ULM project; Lake Baikal: Selenga delta

.

  • Can be a “hot spot” for studies on:
  • Lake Baikal
  • Interaction lake-river
  • River sediment dynamics
  • Forest fire and vegetation
  • Aerosol dynamics over land
  • and over lake

13/17