Multi-scale validation of a new soil freezing scheme for a land-surface model with physically-based hydrology

Soil freezing is a major feature of boreal regions with substantial impact on climate. The present paper describes the implementation of the thermal and hydrological effects of soil freezing in the land surface model ORCHIDEE, which includes a physical description of continental hydrology. The new soil freezing scheme is evaluated against analytical solutions and in-situ observations at a variety of scales in order to test its numerical robustness, explore its sensitivity to parameterization choices and confront its performance to field measurements at typical application scales. Our soil freezing model exhibits a low sensitivity to the vertical discretization for spatial steps in the range of a few millimetres to a few centimetres. It is however sensitive to the temperature interval around the freezing point where phase change occurs, which should be 1 °C to 2 °C wide. Furthermore, linear and thermodynamical parameterizations of the liquid water content lead to similar results in terms of water redistribution within the soil and thermal evolution under freezing. Our approach does not allow firm discrimination of the performance of one approach over the other. The new soil freezing scheme considerably improves the representation of runoff and river discharge in regions underlain by permafrost or subject to seasonal freezing. A thermodynamical parameterization of the liquid water content appears more appropriate for an integrated description of the hydrological processes at the scale of the vast Siberian basins. The use of a subgrid variability approach and the representation of wetlands could help capture the features of the Arctic hydrological regime with more accuracy. The modeling of the soil thermal regime is generally improved by the representation of soil freezing processes. In particular, the dynamics of the active layer is captured with more accuracy, which is of crucial importance in the prospect of simulations involving the response of frozen carbon stocks to future warming. A realistic simulation of the snow cover and its thermal properties, as well as the representation of an organic horizon with specific thermal and hydrological characteristics, are confirmed to be a pre-requisite for a realistic modeling of the soil thermal dynamics in the Arctic.

[1]  D. Verseghy,et al.  Class—A Canadian land surface scheme for GCMS. I. Soil model , 2007 .

[2]  R. Carsel,et al.  Developing joint probability distributions of soil water retention characteristics , 1988 .

[3]  K. Dethloff,et al.  Importance of a soil organic layer for Arctic climate: A sensitivity study with an Arctic RCM , 2008 .

[4]  E. Kowalczyk,et al.  The CSIRO Atmosphere Biosphere Land Exchange (CABLE) model for use in climate models and as an offline model , 2006 .

[5]  A. Robock,et al.  Scales of temporal and spatial variability of midlatitude soil moisture , 1996 .

[6]  Shuhua Yi,et al.  Modifications of a land surface scheme for improved simulation of ground freeze‐thaw in northern environments , 2006 .

[7]  A. Pitman,et al.  Simulation of freeze‐thaw cycles in a general circulation model land surface scheme , 1998 .

[8]  Tim Burt,et al.  Hydraulic conductivity in frozen soils , 1976 .

[9]  Terry V. Callaghan,et al.  Global Change and Arctic Terrestrial Ecosystems , 1997, Ecological Studies.

[10]  C. Vörösmarty,et al.  Assessment of contemporary Arctic river runoff based on observational discharge records , 2001 .

[11]  R. Macdonald,et al.  Connections among ice, runoff and atmospheric forcing in the Beaufort Gyre , 1999 .

[12]  R. Rigon,et al.  Coupled Water and Heat Transfer in Permafrost Modeling , 2010 .

[13]  Jennifer C. Adam,et al.  Adjustment of global gridded precipitation for systematic bias , 2003 .

[14]  R. Barry,et al.  Atmospheric Components of the Arctic Ocean Freshwater Balance and Their Interannual Variability , 2000 .

[15]  S. Idso.  A set of equations for full spectrum and 8- to 14-μm and 10.5- to 12.5-μm thermal radiation from cloudless skies , 1981 .

[16]  Masaru Mizoguchi,et al.  Water Flow and Heat Transport in Frozen Soil , 2004 .

[17]  Vladimir E. Romanovsky,et al.  The role of snow cover in the warming of arctic permafrost , 2003 .

[18]  Kelly Elder,et al.  An Evaluation of Forest Snow Process Simulations , 2009 .

[19]  S. Ghan,et al.  Parameterizing Subgrid Orographic Precipitation and Surface Cover in Climate Models , 1998 .

[20]  Matthew Sturm,et al.  Thermal conductivity measurements of depth hoar , 1992 .

[21]  Shilong Piao,et al.  Modelling sub-grid wetland in the ORCHIDEE global land surface model: evaluation against river discharges and remotely sensed data , 2012 .

[22]  R. Barry,et al.  Russian Historical Soil Temperature Data , 2001 .

[23]  R. Schnur,et al.  Climate-carbon cycle feedback analysis: Results from the C , 2006 .

[24]  F. Stuart Chapin,et al.  The representation of arctic soils in the land surface model: The importance of mosses , 2001 .

[25]  Konstantine P. Georgakakos,et al.  Measurement and utilization of on-site soil moisture data , 1996 .

[26]  J. Pomeroy,et al.  Snow, frozen soils and permafrost hydrology in Canada, 1995-1998. , 2000 .

[27]  Julia Boike,et al.  The surface energy balance of a polygonal tundra site in northern Siberia – Part 1: Spring to fall , 2011 .

[28]  David M. Lawrence,et al.  A projection of severe near‐surface permafrost degradation during the 21st century , 2005 .

[29]  J. Pomeroy,et al.  Soil water storage and active‐layer development in a sub‐alpine tundra hillslope, southern Yukon Territory, Canada , 2005 .

[30]  Paul Grogan,et al.  Deeper Snow Enhances Winter Respiration from Both Plant-associated and Bulk Soil Carbon Pools in Birch Hummock Tundra , 2007, Ecosystems.

[31]  Zong-Liang Yang,et al.  Effects of Frozen Soil on Snowmelt Runoff and Soil Water Storage at a Continental Scale , 2006 .

[32]  I. C. Prentice,et al.  A dynamic global vegetation model for studies of the coupled atmosphere‐biosphere system , 2005 .

[33]  R. Armstrong,et al.  Distribution of seasonally and perennially frozen ground in the Northern Hemisphere , 2002 .

[34]  R. Barry,et al.  Numerical simulations of the influence of the seasonal snow cover on the occurrence of permafrost at high latitudes , 2001 .

[35]  R. Pielke.  Mesoscale Meteorological Modeling , 1984 .

[36]  A. Henderson‐sellers.  Soil moisture simulation: Achievements of the RICE and PILPS intercomparison workshop and future directions , 1996 .

[37]  Omar T. Farouki,et al.  The thermal properties of soils in cold regions , 1981 .

[38]  D. Verseghy,et al.  CLASS-A Canadian Land Surface Scheme for GCMs , 1993 .

[39]  K. Mitchell,et al.  A parameterization of snowpack and frozen ground intended for NCEP weather and climate models , 1999 .

[40]  Julia Boike,et al.  The annual surface energy budget of a high-arctic permafrost site on Svalbard, Norway , 2009 .

[41]  Richard B. Lammers,et al.  Increasing River Discharge to the Arctic Ocean , 2002, Science.

[42]  R. D. Miller,et al.  Soil Freezing and Soil Water Characteristic Curves , 1966 .

[43]  L. Lundin.  Hydraulic properties in an operational model of frozen soil , 1990 .

[44]  J. Christensen,et al.  Impact of global warming on permafrost conditions in a coupled GCM , 2002 .

[45]  Philippe Ciais,et al.  Vulnerability of permafrost carbon to global warming. Part II: sensitivity of permafrost carbon stock to global warming , 2008 .

[46]  Nigel W. Arnell,et al.  Implications of climate change for freshwater inflows to the Arctic Ocean , 2005 .

[47]  David M. Lawrence,et al.  Improved modeling of permafrost dynamics in a GCM land‐surface scheme , 2007 .

[48]  J. R. Mackay,et al.  THE WORLD OF UNDERGROUND ICE , 1972 .

[49]  J. Stefan.  Über die Theorie der Eisbildung , 1890 .

[50]  H. L. Miller,et al.  Climate Change 2007: The Physical Science Basis , 2007 .

[51]  David M. Lawrence,et al.  Incorporating organic soil into a global climate model , 2008 .

[52]  Yongkang Xue,et al.  SSiB and its sensitivity to soil properties-A case study using HAPEX-Mobilhy data , 1996 .

[53]  Stanley G. Benjamin,et al.  Parameterization of cold-season processes in the MAPS land-surface scheme , 2000 .

[54]  Y. Xue,et al.  18-Year Land-Surface Hydrology Model Simulations for a Midlatitude Grassland Catchment in Valdai, Russia , 1997 .

[55]  Y. Mualem.  A New Model for Predicting the Hydraulic Conductivity , 1976 .

[56]  R. Dickinson,et al.  Effects of frozen soil on soil temperature, spring infiltration, and runoff: Results from the PILPS 2(d) experiment at Valdai, Russia , 2003 .

[57]  M. Kimoto,et al.  A Numerical Study on the Impact of Soil Freezing on the Continental-Scale Seasonal Cycle , 2000 .

[58]  Yann Kerr,et al.  The ISLSCP initiative I global datasets: Surface boundary conditions and atmospheric forcings for land-atmosphere studies , 1996 .

[59]  R. Dickinson,et al.  The land surface climatology of the community land model coupled to the NCAR community climate model , 2002 .

[60]  Van Genuchten,et al.  A closed-form equation for predicting the hydraulic conductivity of unsaturated soils , 1980 .

[61]  J. F. Nixon,et al.  The frozen earth: Fundamentals of geocryology , 1990 .

[62]  Zong-Liang Yang,et al.  Simulations of a boreal grassland hydrology at Valdai, Russia: PILPS phase 2(d). , 2000 .

[63]  Michael Bruen,et al.  Sensitivity of surface fluxes to the number of layers in the soil model used in GCMs , 2000 .

[64]  J. Boike,et al.  Thermal and hydrologic dynamics of the active layer at a continuous permafrost site (Taymyr Peninsula, Siberia) , 1998 .

[65]  Dmitry J. Nicolsky,et al.  An evaluation of deep soil configurations in the CLM3 for improved representation of permafrost , 2007 .

[66]  Tingjun Zhang.  Influence of the seasonal snow cover on the ground thermal regime: An overview , 2005 .

[67]  Patrick B. Black,et al.  Comparison of soil freezing curve and soil water curve data for Windsor sandy loam , 1988 .

[68]  Douglas L. Kane,et al.  The Impact of Hydrologic Perturbations on Arctic Ecosystems Induced by Climate Change , 1997 .

[69]  D. Randall,et al.  A Revised Land Surface Parameterization (SiB2) for Atmospheric GCMS. Part I: Model Formulation , 1996 .

[70]  Dennis P. Lettenmaier,et al.  Hydrologic effects of frozen soils in the upper Mississippi River basin , 1999 .

[71]  O. Anisimov,et al.  PERMAFROST ZONATION AND CLIMATE CHANGE IN THE NORTHERN HEMISPHERE: RESULTS FROM TRANSIENT GENERAL CIRCULATION MODELS , 1997 .

[72]  Riccardo Rigon,et al.  A robust and energy-conserving model of freezing variably-saturated soil , 2011 .

[73]  W. Oechel,et al.  Observational Evidence of Recent Change in the Northern High-Latitude Environment , 2000 .

[74]  Douglas L. Kane,et al.  Siberian Lena River hydrologic regime and recent change , 2002 .

[75]  V. Romanovsky,et al.  An evaluation of three numerical models used in simulations of the active layer and permafrost temperature regimes , 1997 .

[76]  Guillaume Ramillien,et al.  Validation of the land water storage simulated by Organising Carbon and Hydrology in Dynamic Ecosystems (ORCHIDEE) with Gravity Recovery and Climate Experiment (GRACE) data , 2007 .

[77]  Dennis P. Lettenmaier,et al.  Simulation of spatial variability in snow and frozen soil , 2003 .

[78]  C. Genthon,et al.  Role of soil freezing in future boreal climate change , 2004 .

[79]  A. Gemant.  The Thermal Conductivity of Soils , 1950 .

[80]  J. Canadell,et al.  Soil organic carbon pools in the northern circumpolar permafrost region , 2009 .

[81]  Catherine Prigent,et al.  An attempt to quantify the impact of changes in wetland extent on methane emissions on the seasonal and interannual time scales , 2010 .

[82]  Vladimir E. Romanovsky,et al.  Thawing of the Active Layer on the Coastal Plain of the Alaskan Arctic , 1997 .

[83]  Toshio Koike,et al.  Frozen soil parameterization in SiB2 and its validation with GAME-Tibet observations , 2003 .

[84]  P. Ciais,et al.  On the formation of high‐latitude soil carbon stocks: Effects of cryoturbation and insulation by organic matter in a land surface model , 2009 .

[85]  George R. Blake,et al.  Thermal Properties of Soils , 1950 .

[86]  Dudley F. Foster,et al.  Global Snow Depth Climatology , 1988 .

[87]  R. Betts,et al.  The impact of new land surface physics on the GCM simulation of climate and climate sensitivity , 1999 .

[88]  Vladimir E. Romanovsky,et al.  Effects of unfrozen water on heat and mass transport processes in the active layer and permafrost. , 2000 .

[89]  V A Kudryavtsev,et al.  Fundamentals of Frost Forecasting in Geological Engineering Investigations (Osnovy Merzlotnogo Prognoza pri Inzhenerno-Geologicheskikh Issledovaniyakh), , 1977 .

[90]  C. Justice,et al.  A Revised Land Surface Parameterization (SiB2) for Atmospheric GCMS. Part II: The Generation of Global Fields of Terrestrial Biophysical Parameters from Satellite Data , 1996 .

[91]  G. S. Campbell,et al.  An Analysis of Sensible and Latent Heat Flow in a Partially Frozen Unsaturated Soil , 1978 .

[92]  R. Dankers,et al.  Simulation of permafrost and seasonal thaw depth in the JULES land surface scheme , 2011 .

[93]  Jan Polcher,et al.  Sensitivity of the West African hydrological cycle in ORCHIDEE to infiltration processes , 2008 .

[94]  M. Bruen,et al.  Scaling effects on moisture fluxes at unvegetated land surfaces , 1997 .

[95]  Stefano Schiavon,et al.  Climate Change 2007: The Physical Science Basis. , 2007 .

[96]  E. Wood,et al.  Development of a 50-Year High-Resolution Global Dataset of Meteorological Forcings for Land Surface Modeling , 2006 .

[97]  A. Pitman,et al.  Uncertainty in the simulation of runoff due to the parameterization of frozen soil moisture using the Global Soil Wetness Project methodology , 1999 .

[98]  N. Abu‐Hamdeh,et al.  Soil Thermal Conductivity Effects of Density, Moisture, Salt Concentration, and Organic Matter , 2000 .