Diagnostic quantities

The availability of a diagnostic depends on modeling choices. For example, the bed uplift rate dbdt is available only if a bed deformation model is selected.

Some scalar diagnostics come in two versions: the one with the suffix _glacierized and the one without. Here the former account for the ice output.ice_free_thickness_standard meters or thicker (10 meters by default) and the latter include all ice regardless of the thickness. “Glacierized” versions were added to make it easier to analyze changes in glacier volumes and areas and exclude changes in the seasonal snow cover.

Spatially-variable fields

  1. air_temp_mean_summer

    Units

    Kelvin

    Description

    mean summer near-surface air temperature used in the cosine yearly cycle

  2. air_temp_sd

    Units

    Kelvin

    Description

    standard deviation of near-surface air temperature

  3. air_temp_snapshot

    Units

    Kelvin

    Description

    instantaneous value of the near-surface air temperature

  4. basal_mass_flux_floating

    Units

    kg m-2 year-1

    Description

    average basal mass flux over the reporting interval (floating areas)

    Comment

    positive flux corresponds to ice gain

  5. basal_mass_flux_grounded

    Units

    kg m-2 year-1

    Description

    average basal mass flux over the reporting interval (grounded areas)

    Comment

    positive flux corresponds to ice gain

  6. basal_melt_rate_grounded

    Units

    m year-1

    Description

    ice basal melt rate from energy conservation, in ice thickness per time (valid in grounded areas)

    Comment

    positive basal melt rate corresponds to ice loss

  7. bedtoptemp

    Units

    Kelvin

    Description

    temperature at the top surface of the bedrock thermal layer

  8. beta

    Units

    Pa s / m

    Description

    basal drag coefficient

  9. bfrict

    Units

    W m-2

    Description

    basal frictional heating

  10. bheatflx

    Units

    mW m-2

    Description

    upward geothermal flux at the bottom bedrock surface

    Comment

    positive values correspond to an upward flux

  11. bmelt

    Units

    m year-1

    Description

    ice basal melt rate from energy conservation and subshelf melt, in ice thickness per time

    Standard name

    land_ice_basal_melt_rate

    Comment

    positive basal melt rate corresponds to ice loss

  12. bwat

    Units

    m

    Description

    thickness of transportable subglacial water layer

  13. bwatvel

    • bwatvel[0]

      Units

      m s-1

      Description

      velocity of water in subglacial layer, i-offset

    • bwatvel[1]

      Units

      m s-1

      Description

      velocity of water in subglacial layer, j-offset

  14. bwp

    Units

    Pa

    Description

    pressure of transportable water in subglacial layer

  15. bwprel

    Units

    Description

    pressure of transportable water in subglacial layer as fraction of the overburden pressure

  16. cell_grounded_fraction

    Units

    Description

    fractional grounded/floating mask (floating=0, grounded=1)

  17. climatic_mass_balance

    Units

    kg m-2 year-1

    Description

    surface mass balance (accumulation/ablation) rate

    Standard name

    land_ice_surface_specific_mass_balance_flux

  18. cts

    Units

    1

    Description

    cts = E/E_s(p), so cold-temperate transition surface is at cts = 1

  19. dHdt

    Units

    m year-1

    Description

    ice thickness rate of change

    Standard name

    tendency_of_land_ice_thickness

  20. dbdt

    Units

    mm year-1

    Description

    bedrock uplift rate

    Standard name

    tendency_of_bedrock_altitude

  21. deviatoric_stresses

    • sigma_xx

      Units

      Pa

      Description

      deviatoric stress in X direction

    • sigma_yy

      Units

      Pa

      Description

      deviatoric stress in Y direction

    • sigma_xy

      Units

      Pa

      Description

      deviatoric shear stress

  22. diffusivity

    Units

    m2 s-1

    Description

    diffusivity of SIA mass continuity equation

  23. diffusivity_staggered

    • diffusivity_i

      Units

      m2 s-1

      Description

      diffusivity of SIA mass continuity equation on the staggered grid (i-offset)

    • diffusivity_j

      Units

      m2 s-1

      Description

      diffusivity of SIA mass continuity equation on the staggered grid (j-offset)

  24. effbwp

    Units

    Pa

    Description

    effective pressure of transportable water in subglacial layer (overburden pressure minus water pressure)

  25. effective_air_temp

    Units

    Kelvin

    Description

    effective mean-annual near-surface air temperature

  26. effective_precipitation

    Units

    kg m-2 year-1

    Description

    effective precipitation rate

    Standard name

    precipitation_flux

  27. effective_viscosity

    Units

    kPascal second

    Description

    effective viscosity of ice

  28. effective_water_velocity

    • u_effective_water_velocity

      Units

      m day-1

      Description

      x-component of the effective water velocity in the steady-state hydrology model

    • v_effective_water_velocity

      Units

      m day-1

      Description

      y-component of the effective water velocity in the steady-state hydrology model

  29. eigen_calving_rate

    Units

    m year-1

    Description

    horizontal calving rate due to eigen-calving

  30. elastic_bed_displacement

    Units

    meters

    Description

    elastic part of the displacement in the Lingle-Clark bed deformation model; see [23]

  31. enthalpy

    Units

    J kg-1

    Description

    ice enthalpy (includes sensible heat, latent heat, pressure)

  32. enthalpybase

    Units

    J kg-1

    Description

    ice enthalpy at the base of ice

  33. enthalpysurf

    Units

    J kg-1

    Description

    ice enthalpy at 1m below the ice surface

  34. firn_depth

    Units

    m

    Description

    firn cover depth

  35. flux

    • uflux

      Units

      m2 year-1

      Description

      Vertically integrated horizontal flux of ice in the X direction

    • vflux

      Units

      m2 year-1

      Description

      Vertically integrated horizontal flux of ice in the Y direction

  36. flux_divergence

    Units

    m year-1

    Description

    flux divergence

  37. flux_mag

    Units

    m2 year-1

    Description

    magnitude of vertically-integrated horizontal flux of ice

  38. flux_staggered

    Units

    m2 year-1

    Description

    fluxes through cell interfaces (sides) on the staggered grid

  39. frontal_melt_rate

    Units

    m day-1

    Description

    frontal melt rate

  40. frontal_melt_retreat_rate

    Units

    m year-1

    Description

    retreat rate due to frontal melt

    Comment

    takes into account what part of the front is submerged

  41. grounding_line_flux

    Units

    kg m-2 year-1

    Description

    grounding line flux

    Comment

    Positive flux corresponds to mass moving from the ocean to an icy grounded area. This convention makes it easier to compare grounding line flux to the total discharge into the ocean

  42. h_x

    • h_x_i

      Units

      Description

      the x-component of the surface gradient, i-offset

    • h_x_j

      Units

      Description

      the x-component of the surface gradient, j-offset

  43. h_y

    • h_y_i

      Units

      Description

      the y-component of the surface gradient, i-offset

    • h_y_j

      Units

      Description

      the y-component of the surface gradient, j-offset

  44. hardav

    Units

    Pa s0.333333

    Description

    vertical average of ice hardness

  45. hardness

    Units

    Pa s0.333333

    Description

    ice hardness computed using the SIA flow law

  46. heat_flux_from_bedrock

    Units

    mW m-2

    Description

    upward geothermal flux at the top bedrock surface

    Standard name

    upward_geothermal_heat_flux_at_ground_level_in_land_ice

    Comment

    positive values correspond to an upward flux

  47. height_above_flotation

    Units

    m

    Description

    ice thickness in excess of the maximum floating ice thickness

    Comment

    shows how close to floatation the ice is at a given location

  48. hydraulic_potential

    Units

    Pa

    Description

    hydraulic potential in the subglacial hydrology system

  49. hydraulic_potential_adjustment

    Units

    Pa

    Description

    potential adjustment needed to fill sinks when computing an estimate of the steady-state hydraulic potential

  50. hydraulic_sinks

    Units

    Description

    map of sinks in the domain (for debugging)

  51. ice_area_specific_volume

    Units

    m3/m2

    Description

    ice-volume-per-area in partially-filled grid cells

    Comment

    this variable represents the amount of ice in a partially-filled cell and not the corresponding geometry, so thinking about it as ‘thickness’ is not helpful

  52. ice_base_elevation

    Units

    m

    Description

    ice bottom surface elevation

  53. ice_margin_pressure_difference

    Units

    Pa m

    Description

    vertically-integrated pressure difference at ice margins (including calving fronts)

  54. ice_mass

    Units

    kg

    Description

    mass per cell

  55. ice_surface_liquid_water_fraction

    Units

    1

    Description

    ice liquid water fraction at the ice surface

  56. ice_surface_temp

    Units

    K

    Description

    ice temperature at the top ice surface

    Standard name

    temperature_at_top_of_ice_sheet_model

  57. lat

    Units

    degree_north

    Description

    latitude

    Standard name

    latitude

  58. liqfrac

    Units

    1

    Description

    liquid water fraction in ice (between 0 and 1)

  59. lon

    Units

    degree_east

    Description

    longitude

    Standard name

    longitude

  60. mask

    Units

    Description

    ice-type (ice-free/grounded/floating/ocean) integer mask

  61. melange_back_pressure_fraction

    Units

    1

    Description

    dimensionless pressure fraction at calving fronts due to presence of melange

  62. nuH

    • nuH[0]

      Units

      kPa s m

      Description

      ice thickness times effective viscosity, i-offset

    • nuH[1]

      Units

      kPa s m

      Description

      ice thickness times effective viscosity, j-offset

  63. pressure

    Units

    Pa

    Description

    pressure in ice (hydrostatic)

  64. rank

    Units

    1

    Description

    processor rank

  65. remaining_water_thickness

    Units

    m

    Description

    scaled water thickness in the steady state hydrology model (has no physical meaning)

  66. schoofs_theta

    Units

    1

    Description

    multiplier ‘theta’ in Schoof’s (2003) theory of bed roughness in SIA

  67. sea_level

    Units

    meters

    Description

    sea level elevation, relative to the geoid

  68. sftflf

    Units

    1

    Description

    fraction of a grid cell covered by floating ice

    Standard name

    floating_ice_shelf_area_fraction

  69. sftgif

    Units

    1

    Description

    fraction of a grid cell covered by ice (grounded or floating)

    Standard name

    land_ice_area_fraction

  70. sftgrf

    Units

    1

    Description

    fraction of a grid cell covered by grounded ice

    Standard name

    grounded_ice_sheet_area_fraction

  71. shelfbmassflux

    Units

    kg m-2 s-1

    Description

    mass flux at the basal surface of ice shelves

  72. shelfbtemp

    Units

    Kelvin

    Description

    ice temperature at the basal surface of ice shelves

  73. snow_depth

    Units

    m

    Description

    snow cover depth (set to zero once a year)

  74. ssa_bc_mask

    Units

    Description

    Dirichlet boundary mask

  75. ssa_bc_vel

    • u_ssa_bc

      Units

      m year-1

      Description

      X-component of the SSA velocity boundary conditions

    • v_ssa_bc

      Units

      m year-1

      Description

      Y-component of the SSA velocity boundary conditions

  76. steady_state_hydraulic_potential

    Units

    Pa

    Description

    estimate of the steady state hydraulic potential in the steady hydrology model

  77. strain_rates

    • eigen1

      Units

      s-1

      Description

      first eigenvalue of the horizontal, vertically-integrated strain rate tensor

    • eigen2

      Units

      s-1

      Description

      second eigenvalue of the horizontal, vertically-integrated strain rate tensor

  78. strainheat

    Units

    mW m-3

    Description

    rate of strain heating in ice (dissipation heating)

  79. subglacial_water_flux_mag

    Units

    m2 year-1

    Description

    magnitude of the subglacial water flux

  80. subglacial_water_input_rate

    Units

    m year-1

    Description

    water input rate from the ice surface into the subglacial water system

    Comment

    positive flux corresponds to water gain

  81. surface_accumulation_flux

    Units

    kg m-2 year-1

    Description

    accumulation (precipitation minus rain), averaged over the reporting interval

  82. surface_accumulation_rate

    Units

    Gt year-1

    Description

    accumulation (precipitation minus rain), averaged over the reporting interval

  83. surface_layer_mass

    Units

    kg

    Description

    mass of the surface layer (snow and firn)

  84. surface_layer_thickness

    Units

    meters

    Description

    thickness of the surface layer (snow and firn)

  85. surface_melt_flux

    Units

    kg m-2 year-1

    Description

    surface melt, averaged over the reporting interval

    Standard name

    surface_snow_and_ice_melt_flux

  86. surface_melt_rate

    Units

    Gt year-1

    Description

    surface melt, averaged over the reporting interval

  87. surface_runoff_flux

    Units

    kg m-2 year-1

    Description

    surface runoff, averaged over the reporting interval

    Standard name

    surface_runoff_flux

  88. surface_runoff_rate

    Units

    Gt year-1

    Description

    surface runoff, averaged over the reporting interval

  89. taub

    • taub_x

      Units

      Pa

      Description

      X-component of the shear stress at the base of ice

      Comment

      this field is purely diagnostic (not used by the model)

    • taub_y

      Units

      Pa

      Description

      Y-component of the shear stress at the base of ice

      Comment

      this field is purely diagnostic (not used by the model)

  90. taub_mag

    Units

    Pa

    Description

    magnitude of the basal shear stress at the base of ice

    Standard name

    land_ice_basal_drag

    Comment

    this field is purely diagnostic (not used by the model)

  91. tauc

    Units

    Pa

    Description

    yield stress for basal till (plastic or pseudo-plastic model)

  92. taud

    • taud_x

      Units

      Pa

      Description

      X-component of the driving shear stress at the base of ice

      Comment

      this is the driving stress used by the SSA solver

    • taud_y

      Units

      Pa

      Description

      Y-component of the driving shear stress at the base of ice

      Comment

      this is the driving stress used by the SSA solver

  93. taud_mag

    Units

    Pa

    Description

    magnitude of the driving shear stress at the base of ice

    Comment

    this is the magnitude of the driving stress used by the SSA solver

  94. tauxz

    Units

    Pa

    Description

    shear stress xz component (in shallow ice approximation SIA)

  95. tauyz

    Units

    Pa

    Description

    shear stress yz component (in shallow ice approximation SIA)

  96. temp

    Units

    K

    Description

    ice temperature

    Standard name

    land_ice_temperature

  97. temp_pa

    Units

    deg_C

    Description

    pressure-adjusted ice temperature (degrees above pressure-melting point)

  98. tempbase

    Units

    K

    Description

    ice temperature at the base of ice

    Standard name

    land_ice_basal_temperature

  99. tempicethk

    Units

    m

    Description

    temperate ice thickness (total column content)

  100. tempicethk_basal

    Units

    m

    Description

    thickness of the basal layer of temperate ice

  101. temppabase

    Units

    Celsius

    Description

    pressure-adjusted ice temperature at the base of ice

  102. tempsurf

    Units

    K

    Description

    ice temperature at 1m below the ice surface

    Standard name

    temperature_at_ground_level_in_snow_or_firn

  103. tendency_of_ice_amount

    Units

    kg m-2 year-1

    Description

    rate of change of the ice amount

  104. tendency_of_ice_amount_due_to_basal_mass_flux

    Units

    kg m-2 year-1

    Description

    average basal mass flux over reporting interval

    Comment

    positive flux corresponds to ice gain

  105. tendency_of_ice_amount_due_to_calving

    Units

    kg m-2 year-1

    Description

    calving flux

    Standard name

    land_ice_specific_mass_flux_due_to_calving

    Comment

    positive flux corresponds to ice gain

  106. tendency_of_ice_amount_due_to_conservation_error

    Units

    kg m-2 year-1

    Description

    average mass conservation error flux over reporting interval

    Comment

    positive flux corresponds to ice gain

  107. tendency_of_ice_amount_due_to_discharge

    Units

    kg m-2 year-1

    Description

    discharge flux (calving, frontal melt, forced retreat)

    Standard name

    land_ice_specific_mass_flux_due_to_calving_and_ice_front_melting

    Comment

    positive flux corresponds to ice gain

  108. tendency_of_ice_amount_due_to_flow

    Units

    kg m-2 year-1

    Description

    rate of change of ice amount due to flow

    Comment

    positive flux corresponds to ice gain

  109. tendency_of_ice_amount_due_to_surface_mass_flux

    Units

    kg m-2 year-1

    Description

    average surface mass flux over reporting interval

    Standard name

    land_ice_surface_specific_mass_balance_flux

    Comment

    positive flux corresponds to ice gain

  110. tendency_of_ice_mass

    Units

    Gt year-1

    Description

    rate of change of the ice mass

  111. tendency_of_ice_mass_due_to_basal_mass_flux

    Units

    Gt year-1

    Description

    average basal mass flux over reporting interval

    Standard name

    tendency_of_land_ice_mass_due_to_basal_mass_balance

    Comment

    positive flux corresponds to ice gain

  112. tendency_of_ice_mass_due_to_calving

    Units

    Gt year-1

    Description

    calving flux

    Comment

    positive flux corresponds to ice gain

  113. tendency_of_ice_mass_due_to_conservation_error

    Units

    Gt year-1

    Description

    average mass conservation error flux over reporting interval

    Comment

    positive flux corresponds to ice gain

  114. tendency_of_ice_mass_due_to_discharge

    Units

    Gt year-1

    Description

    discharge flux (calving, frontal melt, forced retreat)

    Comment

    positive flux corresponds to ice gain

  115. tendency_of_ice_mass_due_to_flow

    Units

    Gt year-1

    Description

    rate of change of ice mass due to flow

    Comment

    positive flux corresponds to ice gain

  116. tendency_of_ice_mass_due_to_surface_mass_flux

    Units

    Gt year-1

    Description

    average surface mass flux over reporting interval

    Comment

    positive flux corresponds to ice gain

  117. tendency_of_subglacial_water_mass

    Units

    Gt year-1

    Description

    rate of change of the total mass of subglacial water

    Comment

    positive flux corresponds to water gain

  118. tendency_of_subglacial_water_mass_at_domain_boundary

    Units

    Gt year-1

    Description

    subglacial water flux at domain boundary (in regional model configurations)

    Comment

    positive flux corresponds to water gain

  119. tendency_of_subglacial_water_mass_at_grounded_margins

    Units

    Gt year-1

    Description

    subglacial water flux at grounded ice margins

    Comment

    positive flux corresponds to water gain

  120. tendency_of_subglacial_water_mass_at_grounding_line

    Units

    Gt year-1

    Description

    subglacial water flux at grounding lines

    Comment

    positive flux corresponds to water gain

  121. tendency_of_subglacial_water_mass_due_to_conservation_error

    Units

    Gt year-1

    Description

    subglacial water flux due to conservation error (mass added to preserve non-negativity)

    Comment

    positive flux corresponds to water gain

  122. tendency_of_subglacial_water_mass_due_to_flow

    Units

    Gt year-1

    Description

    rate of change subglacial water mass due to lateral flow

    Comment

    positive flux corresponds to water gain

  123. tendency_of_subglacial_water_mass_due_to_input

    Units

    Gt year-1

    Description

    subglacial water flux due to input

    Comment

    positive flux corresponds to water gain

  124. thickness_calving_threshold

    Units

    m

    Description

    threshold used by the ‘calving at threshold’ calving method

  125. thk

    Units

    m

    Description

    land ice thickness

    Standard name

    land_ice_thickness

  126. thksmooth

    Units

    m

    Description

    thickness relative to smoothed bed elevation in Schoof’s (2003) theory of bed roughness in SIA

  127. tillphi

    Units

    degrees

    Description

    friction angle for till under grounded ice sheet

  128. tillwat

    Units

    m

    Description

    effective thickness of subglacial water stored in till

  129. topg

    Units

    m

    Description

    bedrock surface elevation

    Standard name

    bedrock_altitude

  130. topg_sl_adjusted

    Units

    meters

    Description

    sea-level adjusted bed topography (zero is at sea level)

  131. topgsmooth

    Units

    m

    Description

    smoothed bed elevation in Schoof’s (2003) theory of bed roughness in SIA

  132. usurf

    Units

    m

    Description

    ice top surface elevation

    Standard name

    surface_altitude

  133. uvel

    Units

    m year-1

    Description

    horizontal velocity of ice in the X direction

    Standard name

    land_ice_x_velocity

  134. velbar

    • ubar

      Units

      m year-1

      Description

      vertical mean of horizontal ice velocity in the X direction

      Standard name

      land_ice_vertical_mean_x_velocity

    • vbar

      Units

      m year-1

      Description

      vertical mean of horizontal ice velocity in the Y direction

      Standard name

      land_ice_vertical_mean_y_velocity

  135. velbar_mag

    Units

    m year-1

    Description

    magnitude of vertically-integrated horizontal velocity of ice

  136. velbase

    • uvelbase

      Units

      m year-1

      Description

      x-component of the horizontal velocity of ice at the base of ice

      Standard name

      land_ice_basal_x_velocity

    • vvelbase

      Units

      m year-1

      Description

      y-component of the horizontal velocity of ice at the base of ice

      Standard name

      land_ice_basal_y_velocity

  137. velbase_mag

    Units

    m year-1

    Description

    magnitude of horizontal velocity of ice at base of ice

  138. velsurf

    • uvelsurf

      Units

      m year-1

      Description

      x-component of the horizontal velocity of ice at ice surface

      Standard name

      land_ice_surface_x_velocity

    • vvelsurf

      Units

      m year-1

      Description

      y-component of the horizontal velocity of ice at ice surface

      Standard name

      land_ice_surface_y_velocity

  139. velsurf_mag

    Units

    m year-1

    Description

    magnitude of horizontal velocity of ice at ice surface

  140. viscous_bed_displacement

    Units

    meters

    Description

    bed displacement in the viscous half-space bed deformation model; see BuelerLingleBrown

  141. vonmises_calving_rate

    Units

    m year-1

    Description

    horizontal calving rate due to von Mises calving

  142. vonmises_calving_threshold

    Units

    Pa

    Description

    threshold used by the ‘von Mises’ calving method

  143. vonmises_stress

    Units

    Pascal

    Description

    tensile von Mises stress

  144. vvel

    Units

    m year-1

    Description

    horizontal velocity of ice in the Y direction

    Standard name

    land_ice_y_velocity

  145. wallmelt

    Units

    m year-1

    Description

    wall melt into subglacial hydrology layer from (turbulent) dissipation of energy in transportable water

  146. wvel

    Units

    m year-1

    Description

    vertical velocity of ice, relative to geoid

  147. wvel_rel

    Units

    m year-1

    Description

    vertical velocity of ice, relative to base of ice directly below

  148. wvelbase

    Units

    m year-1

    Description

    vertical velocity of ice at the base of ice, relative to the geoid

    Standard name

    land_ice_basal_upward_velocity

  149. wvelsurf

    Units

    m year-1

    Description

    vertical velocity of ice at ice surface, relative to the geoid

    Standard name

    land_ice_surface_upward_velocity

Scalar time-series

  1. basal_mass_flux_floating

    Units

    Gt year-1

    Description

    total sub-shelf ice flux

    Standard name

    tendency_of_land_ice_mass_due_to_basal_mass_balance

    Comment

    positive means ice gain

  2. basal_mass_flux_grounded

    Units

    Gt year-1

    Description

    total over grounded ice domain of basal mass flux

    Standard name

    tendency_of_land_ice_mass_due_to_basal_mass_balance

    Comment

    positive means ice gain

  3. dt

    Units

    year

    Description

    mass continuity time step

  4. grounding_line_flux

    Units

    Gt year-1

    Description

    total ice flux across the grounding line

    Comment

    negative flux corresponds to ice loss into the ocean

  5. ice_area_glacierized

    Units

    m2

    Description

    glacierized area

  6. ice_area_glacierized_cold_base

    Units

    m2

    Description

    glacierized area where basal ice is cold

  7. ice_area_glacierized_floating

    Units

    m2

    Description

    area of ice shelves in glacierized areas

    Standard name

    floating_ice_shelf_area

  8. ice_area_glacierized_grounded

    Units

    m2

    Description

    area of grounded ice in glacierized areas

    Standard name

    grounded_ice_sheet_area

  9. ice_area_glacierized_temperate_base

    Units

    m2

    Description

    glacierized area where basal ice is temperate

  10. ice_enthalpy

    Units

    J

    Description

    enthalpy of the ice, including seasonal cover

  11. ice_enthalpy_glacierized

    Units

    J

    Description

    enthalpy of the ice in glacierized areas

  12. ice_mass

    Units

    kg

    Description

    mass of the ice, including seasonal cover

    Standard name

    land_ice_mass

  13. ice_mass_glacierized

    Units

    kg

    Description

    mass of the ice in glacierized areas

  14. ice_volume

    Units

    m3

    Description

    volume of the ice, including seasonal cover

  15. ice_volume_cold

    Units

    m3

    Description

    volume of cold ice, including seasonal cover

  16. ice_volume_glacierized

    Units

    m3

    Description

    volume of the ice in glacierized areas

  17. ice_volume_glacierized_cold

    Units

    m3

    Description

    volume of cold ice in glacierized areas

  18. ice_volume_glacierized_floating

    Units

    m3

    Description

    volume of ice shelves in glacierized areas

  19. ice_volume_glacierized_grounded

    Units

    m3

    Description

    volume of grounded ice in glacierized areas

  20. ice_volume_glacierized_temperate

    Units

    m3

    Description

    volume of temperate ice in glacierized areas

  21. ice_volume_temperate

    Units

    m3

    Description

    volume of temperate ice, including seasonal cover

  22. limnsw

    Units

    kg

    Description

    mass of the ice not displacing sea water

    Standard name

    land_ice_mass_not_displacing_sea_water

  23. liquified_ice_flux

    Units

    m3 / year

    Description

    rate of ice loss due to liquefaction, averaged over the reporting interval

    Comment

    positive means ice loss

  24. max_diffusivity

    Units

    m2 s-1

    Description

    maximum diffusivity

  25. max_hor_vel

    Units

    m year-1

    Description

    maximum abs component of horizontal ice velocity over grid in last time step during time-series reporting interval

  26. sea_level_rise_potential

    Units

    m

    Description

    the sea level rise that would result if all the ice were melted

  27. surface_accumulation_rate

    Units

    kg year-1

    Description

    surface accumulation rate (PDD model)

  28. surface_melt_rate

    Units

    kg year-1

    Description

    surface melt rate (PDD model)

  29. surface_runoff_rate

    Units

    kg year-1

    Description

    surface runoff rate (PDD model)

  30. tendency_of_ice_mass

    Units

    Gt year-1

    Description

    rate of change of the mass of ice, including seasonal cover

  31. tendency_of_ice_mass_due_to_basal_mass_flux

    Units

    Gt year-1

    Description

    total over ice domain of bottom surface ice mass flux

    Standard name

    tendency_of_land_ice_mass_due_to_basal_mass_balance

    Comment

    positive means ice gain

  32. tendency_of_ice_mass_due_to_calving

    Units

    Gt year-1

    Description

    calving flux

    Standard name

    tendency_of_land_ice_mass_due_to_calving

    Comment

    positive means ice gain

  33. tendency_of_ice_mass_due_to_conservation_error

    Units

    Gt year-1

    Description

    total numerical flux needed to preserve non-negativity of ice thickness

    Comment

    positive means ice gain

  34. tendency_of_ice_mass_due_to_discharge

    Units

    Gt year-1

    Description

    discharge flux (frontal melt, calving, forced retreat)

    Standard name

    tendency_of_land_ice_mass_due_to_calving_and_ice_front_melting

    Comment

    positive means ice gain

  35. tendency_of_ice_mass_due_to_flow

    Units

    Gt year-1

    Description

    rate of change of the mass of ice due to flow (i.e. prescribed ice thickness)

  36. tendency_of_ice_mass_due_to_surface_mass_flux

    Units

    Gt year-1

    Description

    total over ice domain of top surface ice mass flux

    Standard name

    tendency_of_land_ice_mass_due_to_surface_mass_balance

    Comment

    positive means ice gain

  37. tendency_of_ice_mass_glacierized

    Units

    Gt year-1

    Description

    rate of change of the ice mass in glacierized areas

  38. tendency_of_ice_volume

    Units

    m3 year-1

    Description

    rate of change of the ice volume, including seasonal cover

  39. tendency_of_ice_volume_glacierized

    Units

    m3 year-1

    Description

    rate of change of the ice volume in glacierized areas


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