Workshop Details

INARCH held the 2022 workshop in the Spanish Pyrenees at a small village called Baños de Panticosa (Panticosa hot springs) on October 18-20, 2022.  This was the first time the network had been able to come together in-person since before the pandemic, and it provided opportunities to discuss and shape our activities for the second phase of INARCH.  

The workshop was focused on INARCH Phase II Science Questions and activities. 

Participants of the 2022 INARCH workshop at Balneario de Panticosa Hotel in the Spanish Pyrenees.

Summary and INARCH 2022 Statement

Summary of Observatories and Measurement Techniques

  • Advances in using isotopes to supplement hydrometeorological observations and diagnostic modelling, including model calibration and structural design decisions from isotopic data.
  • Advances in satellite observations of snow depth, but limited to non-steep and non-forested sites. Density is still a challenge.
  • Advances in field techniques to include basin-scale gravimetry, UAV LiDAR & IR, tower and terrestrialLiDAR
  • Expansion of INARCH instrumented basins to all inhabited continents and new mountain ranges (Pamirs, High Atlas)
  • Advances in reanalysis data in Andes, North America (historical)
  • INARCH basins are starting or ready for COPE observing period

Summary of Predictions, Comparisons, Validity

  • Advances in deployment of ecohydrological models to explore co-evolution of snow and vegetation and models addressing vegetation change (shrubification, forest change), revised interception, greening, drought and management
  • Improvements in atmospheric model forcing of precipitation phase and wind fields, high resolution nested models for dynamical downscaling (greater extent).
  • Downscaling of atmospheric models to complex terrain snow models at snow-drift permitting scales (<100 m) applied at continental scales – intercomparison and evaluation against satellite and surface observations are needed to assess model outputs. Standardized comparisons to areal metrics need to be developed.
  • Improvements in data assimilation techniques for prediction.
  • Examination of parameter uncertainty, transferability and machine learning techniques in hydro-cryosphere modelling. Noted that calibration from streamflow of physically based parameters in hydro-cryospheric modelling should focus on routing and subsurface rather than observable surface parameters (equifinality, self deception)
  • Comparisons of impacts of climate change on cryosphere and hydrology in different glaciated and snow dominated basins show different sensitivities to climate change.
  • Identification of the distinctive research needs for marginal snowpacks – e.g. ground heat flux

COPE and Data Management

  • COPE represents a unique opportunity to implement, focus and accelerate model comparison and validation, observation comparison, and collaboration to compare process operation and model improvements on INARCH testbed basins.
  • GWFNet data catalogue can help INARCH researchers find each other, papers, models, instrumented sites, data records, model outcomes.
  • Need for INARCH researchers to provide information to Stephen for cataloguing.
  • Keeping long term research basins going remains a continual challenge
  • Specific COPE research projects need to be developed – same model for elasticity to change applied at different basins, observed response to extremes and climate differences, comparative eco-hydrology, new model testing?
  • Plan for several papers from COPE analyses/comparisons and an overarching COPE data paper.

INARCH Statement 2022

We have

  • begun Phase 2, started COPE,
  • expanded investigators, observations, basins, mountain ranges, and models,
  • implemented a data cataloguing system, snowdrift-resolving models continentally,
  • explored new measurement techniques, data assimilation, parameter uncertainty and machine learning,
  • started linking to ecosystems and downstream water resources;
  • informed a proposed UN Year of Glacier Preservation and contributed to WMO, UNESCO, WCRP, UN Water Decade

We need to

  • Develop detailed science investigations in COPE and ensure that it is used by other groups (WMO, intercomparison projects)
  • Apply atmospheric/hydrological/other models to INARCH basins for the COPE period
  • Co-develop plans to and share experiences on increase mountain community/regional science and decision making capacity


Oral Presentations
Ekaterina Rets Studying scale effects in streamflow response in glacierized Baksan river catchment in the North Caucasus using natural stable isotopes View Presentation
Simon Gascoin Sentinel-2, Pléiades, Icesat-2, Trishna... Hijacking Earth observation satellites for snow science View Presentation
Simon Gascoin (for Lahoucine Hanich) Hydro-climatic observatory of the Rheraya watershed in the Moroccan High Atlas Mountains View Presentation
Franziska Koch Influence of snow on the integrative signal of a superconducting gravimeter installed on top of Mount Zugspitze, Germany (Northern Calcareous Alps) View Presentation
John Pomeroy Canadian Rockies Hydrological Observatory Process and Aerial UAV Measurements 2022 View Presentation
Tom Gribbin Glaciohydrology of the Vilcanota basin, Peru View Presentation
Ernesto Trujillo SNOWEX-2020 dataset and recent rain-snow transition zone hydrological research at the Reynolds Creek Experimental Watershed View Presentation
Caroline Aubry-Wake Vulnerability to climate change in glacierized headwater mountain basins in the Canadian Rockies and the Austrian Alps is controlled by summer snow dynamics View Presentation
Vincent Vionnet Snow level from post-processing of atmospheric model improves snowfall estimate and snowpack prediction in mountains View Presentation
María José Polo How can we better describe the hydrological impacts of snow droughts in semiarid environments? View Presentation
James McNamara Snow, grow and flow: Ecohydrological processes in the rain-snow transition zone View Presentation
Chris Marsh New developments in the Canadian Hydrological Model (CHM) and large-extent simulations View Presentation
Ethan Gutmann Climate and Snow Model Simulations over INARCH basins for the COPE View Presentation
Sean Carey How ecosystems and catchment characteristics influence blue-green water fluxes and solute transport in a mountainous subarctic catchment, Yukon, Canada View Presentation
Jesús Revuelto The study of snowpack in the Balneario de Panticosa:  An unique location to study the transition from forested to alpine environments
Ignacio López Moreno The study of marginal snowpacks: interest and difficulty View Presentation
James McPhee Parameter uncertainty of Hydro-glaciological model estimates derived from non-stationary climate conditions View Presentation
Chris DeBeer Status and Activities of INARCH Common Observing Period Experiment (COPE) View Presentation
Stephen O’Hearn Data Management and the GWFNet Catalogue for INARCH/COPE View Presentation
Poster Presentations
Esteban Alonso González MuSA: The Multiscale Snow Data Assimilation System View Presentation
Cesar Deschamps Future evolution of the snowpack in the Iberic peninsula View Presentation
Francisco Rojas Heredia Glacier monitoring system in Colombia: insights on one of the last tropical glacier zones View Presentation
Duanne White Flow modulation by deep regolith in the Snowy Mountains, Australia View Presentation
Michael Matiu Downscaling approaches for climate model projections in complex terrain - from snow cover duration to meteorology View Presentation
Ixeia Vidaller Monitoring activities of the last Pyrenean glaciers View Presentation
Sebastián Krogh Tree regrowth impacts on high-resolution snowpack modeling in a Mediterranean montane catchment View Presentation
Achille Jouberton Establishment of a catchment monitoring network in the mountains of Tajikistan View Presentation
Stefan Fugger Mechanistic land surface modeling in an Amu Darya headwater catchment View Presentation
Ekaterina Rets High Arctic Fuglebekken experimental catchment on Spitsbergen, Svalbard View Presentation
Josep Bonsoms Rain on snow responses to climate warming in the Pyrenees View Presentation
Jesús Revuelto Not too soon, nor too late: intermediate snowpack melt-out dates guarantee the highest seasonal grasslands greening in the Pyrenees View Presentation
Louis Le Toumelin A deep learning approach to downscale and correct wind fields in complex terrain View Presentation
Rafael Pimentel Are precipitation and snowfall droughts concomitant in semiarid mountainous areas? View Presentation
Ekaterina Rets Combined physically-based and machine learning approach for operational estimation of snow water equivalent across the Western U.S.: Snowcast Showdown View Presentation
Sabine Radanovics Towards downscaling of precipitation phase from high resolution meteorological forecast model output over complex terrain View Presentation
Ange Haddjeri Opportunities and challenges for hectometric scale simulations of alpine snow cover: wind-induced snow transport and precipitation uncertainties View Presentation


 Baños de Panticosa, Spain

Photographs of the workshop hotel, Baños de Panticosa (Panticosa hot springs) and field tour sites (Portalet Pass) by John Pomeroy

Workshop location.