tdiagnostics-list.txt - pism - [fork] customized build of PISM, the parallel ice sheet model (tillflux branch) (HTM) git clone git://src.adamsgaard.dk/pism (DIR) Log (DIR) Files (DIR) Refs (DIR) LICENSE --- tdiagnostics-list.txt (29015B) --- 1 .. -*- mode: rst -*- 2 3 .. DO NOT EDIT. This file was generated using list_diagnostics.py. 4 5 6 .. _sec-extra_vars: 7 8 Spatially-variable fields 9 ------------------------- 10 11 #. ``air_temp_mean_summer`` 12 13 :Units: Kelvin 14 :Description: mean summer near-surface air temperature used in the cosine yearly cycle 15 16 #. ``air_temp_sd`` 17 18 :Units: Kelvin 19 :Description: standard deviation of near-surface air temperature 20 21 #. ``air_temp_snapshot`` 22 23 :Units: Kelvin 24 :Description: instantaneous value of the near-surface air temperature 25 26 #. ``basal_mass_flux_floating`` 27 28 :Units: kg m-2 year-1 29 :Description: average basal mass flux over the reporting interval (floating areas) 30 :Comment: positive flux corresponds to ice gain 31 32 #. ``basal_mass_flux_grounded`` 33 34 :Units: kg m-2 year-1 35 :Description: average basal mass flux over the reporting interval (grounded areas) 36 :Comment: positive flux corresponds to ice gain 37 38 #. ``basal_melt_rate_grounded`` 39 40 :Units: m year-1 41 :Description: ice basal melt rate from energy conservation, in ice thickness per time (valid in grounded areas) 42 :Comment: positive basal melt rate corresponds to ice loss 43 44 #. ``bedtoptemp`` 45 46 :Units: Kelvin 47 :Description: temperature at the top surface of the bedrock thermal layer 48 49 #. ``beta`` 50 51 :Units: Pa s / m 52 :Description: basal drag coefficient 53 54 #. ``bfrict`` 55 56 :Units: W m-2 57 :Description: basal frictional heating 58 59 #. ``bheatflx`` 60 61 :Units: mW m-2 62 :Description: upward geothermal flux at the bottom bedrock surface 63 :Comment: positive values correspond to an upward flux 64 65 #. ``bmelt`` 66 67 :Units: m year-1 68 :Description: ice basal melt rate from energy conservation and subshelf melt, in ice thickness per time 69 :Standard name: ``land_ice_basal_melt_rate`` 70 :Comment: positive basal melt rate corresponds to ice loss 71 72 #. ``bwat`` 73 74 :Units: m 75 :Description: thickness of transportable subglacial water layer 76 77 #. ``bwatvel`` 78 79 - ``bwatvel[0]`` 80 81 :Units: m s-1 82 :Description: velocity of water in subglacial layer, i-offset 83 84 - ``bwatvel[1]`` 85 86 :Units: m s-1 87 :Description: velocity of water in subglacial layer, j-offset 88 89 #. ``bwp`` 90 91 :Units: Pa 92 :Description: pressure of transportable water in subglacial layer 93 94 #. ``bwprel`` 95 96 :Units: --- 97 :Description: pressure of transportable water in subglacial layer as fraction of the overburden pressure 98 99 #. ``cell_grounded_fraction`` 100 101 :Units: --- 102 :Description: fractional grounded/floating mask (floating=0, grounded=1) 103 104 #. ``climatic_mass_balance`` 105 106 :Units: kg m-2 year-1 107 :Description: surface mass balance (accumulation/ablation) rate 108 :Standard name: ``land_ice_surface_specific_mass_balance_flux`` 109 110 #. ``cts`` 111 112 :Units: 1 113 :Description: cts = E/E_s(p), so cold-temperate transition surface is at cts = 1 114 115 #. ``dHdt`` 116 117 :Units: m year-1 118 :Description: ice thickness rate of change 119 :Standard name: ``tendency_of_land_ice_thickness`` 120 121 #. ``dbdt`` 122 123 :Units: mm year-1 124 :Description: bedrock uplift rate 125 :Standard name: ``tendency_of_bedrock_altitude`` 126 127 #. ``deviatoric_stresses`` 128 129 - ``sigma_xx`` 130 131 :Units: Pa 132 :Description: deviatoric stress in X direction 133 134 - ``sigma_yy`` 135 136 :Units: Pa 137 :Description: deviatoric stress in Y direction 138 139 - ``sigma_xy`` 140 141 :Units: Pa 142 :Description: deviatoric shear stress 143 144 #. ``diffusivity`` 145 146 :Units: m2 s-1 147 :Description: diffusivity of SIA mass continuity equation 148 149 #. ``diffusivity_staggered`` 150 151 - ``diffusivity_i`` 152 153 :Units: m2 s-1 154 :Description: diffusivity of SIA mass continuity equation on the staggered grid (i-offset) 155 156 - ``diffusivity_j`` 157 158 :Units: m2 s-1 159 :Description: diffusivity of SIA mass continuity equation on the staggered grid (j-offset) 160 161 #. ``effbwp`` 162 163 :Units: Pa 164 :Description: effective pressure of transportable water in subglacial layer (overburden pressure minus water pressure) 165 166 #. ``effective_air_temp`` 167 168 :Units: Kelvin 169 :Description: effective mean-annual near-surface air temperature 170 171 #. ``effective_precipitation`` 172 173 :Units: kg m-2 year-1 174 :Description: effective precipitation rate 175 :Standard name: ``precipitation_flux`` 176 177 #. ``effective_viscosity`` 178 179 :Units: kPascal second 180 :Description: effective viscosity of ice 181 182 #. ``effective_water_velocity`` 183 184 - ``u_effective_water_velocity`` 185 186 :Units: m day-1 187 :Description: x-component of the effective water velocity in the steady-state hydrology model 188 189 - ``v_effective_water_velocity`` 190 191 :Units: m day-1 192 :Description: y-component of the effective water velocity in the steady-state hydrology model 193 194 #. ``eigen_calving_rate`` 195 196 :Units: m year-1 197 :Description: horizontal calving rate due to eigen-calving 198 199 #. ``elastic_bed_displacement`` 200 201 :Units: meters 202 :Description: elastic part of the displacement in the Lingle-Clark bed deformation model; see :cite:`BLKfastearth` 203 204 #. ``enthalpy`` 205 206 :Units: J kg-1 207 :Description: ice enthalpy (includes sensible heat, latent heat, pressure) 208 209 #. ``enthalpybase`` 210 211 :Units: J kg-1 212 :Description: ice enthalpy at the base of ice 213 214 #. ``enthalpysurf`` 215 216 :Units: J kg-1 217 :Description: ice enthalpy at 1m below the ice surface 218 219 #. ``firn_depth`` 220 221 :Units: m 222 :Description: firn cover depth 223 224 #. ``flux`` 225 226 - ``uflux`` 227 228 :Units: m2 year-1 229 :Description: Vertically integrated horizontal flux of ice in the X direction 230 231 - ``vflux`` 232 233 :Units: m2 year-1 234 :Description: Vertically integrated horizontal flux of ice in the Y direction 235 236 #. ``flux_divergence`` 237 238 :Units: m year-1 239 :Description: flux divergence 240 241 #. ``flux_mag`` 242 243 :Units: m2 year-1 244 :Description: magnitude of vertically-integrated horizontal flux of ice 245 246 #. ``flux_staggered`` 247 248 :Units: m2 year-1 249 :Description: fluxes through cell interfaces (sides) on the staggered grid 250 251 #. ``frontal_melt_rate`` 252 253 :Units: m day-1 254 :Description: frontal melt rate 255 256 #. ``frontal_melt_retreat_rate`` 257 258 :Units: m year-1 259 :Description: retreat rate due to frontal melt 260 :Comment: takes into account what part of the front is submerged 261 262 #. ``grounding_line_flux`` 263 264 :Units: kg m-2 year-1 265 :Description: grounding line flux 266 :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 267 268 #. ``h_x`` 269 270 - ``h_x_i`` 271 272 :Units: --- 273 :Description: the x-component of the surface gradient, i-offset 274 275 - ``h_x_j`` 276 277 :Units: --- 278 :Description: the x-component of the surface gradient, j-offset 279 280 #. ``h_y`` 281 282 - ``h_y_i`` 283 284 :Units: --- 285 :Description: the y-component of the surface gradient, i-offset 286 287 - ``h_y_j`` 288 289 :Units: --- 290 :Description: the y-component of the surface gradient, j-offset 291 292 #. ``hardav`` 293 294 :Units: Pa s0.333333 295 :Description: vertical average of ice hardness 296 297 #. ``hardness`` 298 299 :Units: Pa s0.333333 300 :Description: ice hardness computed using the SIA flow law 301 302 #. ``heat_flux_from_bedrock`` 303 304 :Units: mW m-2 305 :Description: upward geothermal flux at the top bedrock surface 306 :Standard name: ``upward_geothermal_heat_flux_at_ground_level_in_land_ice`` 307 :Comment: positive values correspond to an upward flux 308 309 #. ``height_above_flotation`` 310 311 :Units: m 312 :Description: ice thickness in excess of the maximum floating ice thickness 313 :Comment: shows how close to floatation the ice is at a given location 314 315 #. ``hydraulic_potential`` 316 317 :Units: Pa 318 :Description: hydraulic potential in the subglacial hydrology system 319 320 #. ``hydraulic_potential_adjustment`` 321 322 :Units: Pa 323 :Description: potential adjustment needed to fill sinks when computing an estimate of the steady-state hydraulic potential 324 325 #. ``hydraulic_sinks`` 326 327 :Units: --- 328 :Description: map of sinks in the domain (for debugging) 329 330 #. ``ice_area_specific_volume`` 331 332 :Units: m3/m2 333 :Description: ice-volume-per-area in partially-filled grid cells 334 :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 335 336 #. ``ice_base_elevation`` 337 338 :Units: m 339 :Description: ice bottom surface elevation 340 341 #. ``ice_margin_pressure_difference`` 342 343 :Units: Pa m 344 :Description: vertically-integrated pressure difference at ice margins (including calving fronts) 345 346 #. ``ice_mass`` 347 348 :Units: kg 349 :Description: mass per cell 350 351 #. ``ice_surface_liquid_water_fraction`` 352 353 :Units: 1 354 :Description: ice liquid water fraction at the ice surface 355 356 #. ``ice_surface_temp`` 357 358 :Units: K 359 :Description: ice temperature at the top ice surface 360 :Standard name: ``temperature_at_top_of_ice_sheet_model`` 361 362 #. ``lat`` 363 364 :Units: degree_north 365 :Description: latitude 366 :Standard name: ``latitude`` 367 368 #. ``liqfrac`` 369 370 :Units: 1 371 :Description: liquid water fraction in ice (between 0 and 1) 372 373 #. ``lon`` 374 375 :Units: degree_east 376 :Description: longitude 377 :Standard name: ``longitude`` 378 379 #. ``mask`` 380 381 :Units: --- 382 :Description: ice-type (ice-free/grounded/floating/ocean) integer mask 383 384 #. ``melange_back_pressure_fraction`` 385 386 :Units: 1 387 :Description: dimensionless pressure fraction at calving fronts due to presence of melange 388 389 #. ``nuH`` 390 391 - ``nuH[0]`` 392 393 :Units: kPa s m 394 :Description: ice thickness times effective viscosity, i-offset 395 396 - ``nuH[1]`` 397 398 :Units: kPa s m 399 :Description: ice thickness times effective viscosity, j-offset 400 401 #. ``pressure`` 402 403 :Units: Pa 404 :Description: pressure in ice (hydrostatic) 405 406 #. ``rank`` 407 408 :Units: 1 409 :Description: processor rank 410 411 #. ``remaining_water_thickness`` 412 413 :Units: m 414 :Description: scaled water thickness in the steady state hydrology model (has no physical meaning) 415 416 #. ``schoofs_theta`` 417 418 :Units: 1 419 :Description: multiplier 'theta' in Schoof's (2003) theory of bed roughness in SIA 420 421 #. ``sea_level`` 422 423 :Units: meters 424 :Description: sea level elevation, relative to the geoid 425 426 #. ``sftflf`` 427 428 :Units: 1 429 :Description: fraction of a grid cell covered by floating ice 430 :Standard name: ``floating_ice_shelf_area_fraction`` 431 432 #. ``sftgif`` 433 434 :Units: 1 435 :Description: fraction of a grid cell covered by ice (grounded or floating) 436 :Standard name: ``land_ice_area_fraction`` 437 438 #. ``sftgrf`` 439 440 :Units: 1 441 :Description: fraction of a grid cell covered by grounded ice 442 :Standard name: ``grounded_ice_sheet_area_fraction`` 443 444 #. ``shelfbmassflux`` 445 446 :Units: kg m-2 s-1 447 :Description: mass flux at the basal surface of ice shelves 448 449 #. ``shelfbtemp`` 450 451 :Units: Kelvin 452 :Description: ice temperature at the basal surface of ice shelves 453 454 #. ``snow_depth`` 455 456 :Units: m 457 :Description: snow cover depth (set to zero once a year) 458 459 #. ``ssa_bc_mask`` 460 461 :Units: --- 462 :Description: Dirichlet boundary mask 463 464 #. ``ssa_bc_vel`` 465 466 - ``u_ssa_bc`` 467 468 :Units: m year-1 469 :Description: X-component of the SSA velocity boundary conditions 470 471 - ``v_ssa_bc`` 472 473 :Units: m year-1 474 :Description: Y-component of the SSA velocity boundary conditions 475 476 #. ``steady_state_hydraulic_potential`` 477 478 :Units: Pa 479 :Description: estimate of the steady state hydraulic potential in the steady hydrology model 480 481 #. ``strain_rates`` 482 483 - ``eigen1`` 484 485 :Units: s-1 486 :Description: first eigenvalue of the horizontal, vertically-integrated strain rate tensor 487 488 - ``eigen2`` 489 490 :Units: s-1 491 :Description: second eigenvalue of the horizontal, vertically-integrated strain rate tensor 492 493 #. ``strainheat`` 494 495 :Units: mW m-3 496 :Description: rate of strain heating in ice (dissipation heating) 497 498 #. ``subglacial_water_flux_mag`` 499 500 :Units: m2 year-1 501 :Description: magnitude of the subglacial water flux 502 503 #. ``subglacial_water_input_rate`` 504 505 :Units: m year-1 506 :Description: water input rate from the ice surface into the subglacial water system 507 :Comment: positive flux corresponds to water gain 508 509 #. ``surface_accumulation_flux`` 510 511 :Units: kg m-2 year-1 512 :Description: accumulation (precipitation minus rain), averaged over the reporting interval 513 514 #. ``surface_accumulation_rate`` 515 516 :Units: Gt year-1 517 :Description: accumulation (precipitation minus rain), averaged over the reporting interval 518 519 #. ``surface_layer_mass`` 520 521 :Units: kg 522 :Description: mass of the surface layer (snow and firn) 523 524 #. ``surface_layer_thickness`` 525 526 :Units: meters 527 :Description: thickness of the surface layer (snow and firn) 528 529 #. ``surface_melt_flux`` 530 531 :Units: kg m-2 year-1 532 :Description: surface melt, averaged over the reporting interval 533 :Standard name: ``surface_snow_and_ice_melt_flux`` 534 535 #. ``surface_melt_rate`` 536 537 :Units: Gt year-1 538 :Description: surface melt, averaged over the reporting interval 539 540 #. ``surface_runoff_flux`` 541 542 :Units: kg m-2 year-1 543 :Description: surface runoff, averaged over the reporting interval 544 :Standard name: ``surface_runoff_flux`` 545 546 #. ``surface_runoff_rate`` 547 548 :Units: Gt year-1 549 :Description: surface runoff, averaged over the reporting interval 550 551 #. ``taub`` 552 553 - ``taub_x`` 554 555 :Units: Pa 556 :Description: X-component of the shear stress at the base of ice 557 :Comment: this field is purely diagnostic (not used by the model) 558 559 - ``taub_y`` 560 561 :Units: Pa 562 :Description: Y-component of the shear stress at the base of ice 563 :Comment: this field is purely diagnostic (not used by the model) 564 565 #. ``taub_mag`` 566 567 :Units: Pa 568 :Description: magnitude of the basal shear stress at the base of ice 569 :Standard name: ``land_ice_basal_drag`` 570 :Comment: this field is purely diagnostic (not used by the model) 571 572 #. ``tauc`` 573 574 :Units: Pa 575 :Description: yield stress for basal till (plastic or pseudo-plastic model) 576 577 #. ``taud`` 578 579 - ``taud_x`` 580 581 :Units: Pa 582 :Description: X-component of the driving shear stress at the base of ice 583 :Comment: this is the driving stress used by the SSA solver 584 585 - ``taud_y`` 586 587 :Units: Pa 588 :Description: Y-component of the driving shear stress at the base of ice 589 :Comment: this is the driving stress used by the SSA solver 590 591 #. ``taud_mag`` 592 593 :Units: Pa 594 :Description: magnitude of the driving shear stress at the base of ice 595 :Comment: this is the magnitude of the driving stress used by the SSA solver 596 597 #. ``tauxz`` 598 599 :Units: Pa 600 :Description: shear stress xz component (in shallow ice approximation SIA) 601 602 #. ``tauyz`` 603 604 :Units: Pa 605 :Description: shear stress yz component (in shallow ice approximation SIA) 606 607 #. ``temp`` 608 609 :Units: K 610 :Description: ice temperature 611 :Standard name: ``land_ice_temperature`` 612 613 #. ``temp_pa`` 614 615 :Units: deg_C 616 :Description: pressure-adjusted ice temperature (degrees above pressure-melting point) 617 618 #. ``tempbase`` 619 620 :Units: K 621 :Description: ice temperature at the base of ice 622 :Standard name: ``land_ice_basal_temperature`` 623 624 #. ``tempicethk`` 625 626 :Units: m 627 :Description: temperate ice thickness (total column content) 628 629 #. ``tempicethk_basal`` 630 631 :Units: m 632 :Description: thickness of the basal layer of temperate ice 633 634 #. ``temppabase`` 635 636 :Units: Celsius 637 :Description: pressure-adjusted ice temperature at the base of ice 638 639 #. ``tempsurf`` 640 641 :Units: K 642 :Description: ice temperature at 1m below the ice surface 643 :Standard name: ``temperature_at_ground_level_in_snow_or_firn`` 644 645 #. ``tendency_of_ice_amount`` 646 647 :Units: kg m-2 year-1 648 :Description: rate of change of the ice amount 649 650 #. ``tendency_of_ice_amount_due_to_basal_mass_flux`` 651 652 :Units: kg m-2 year-1 653 :Description: average basal mass flux over reporting interval 654 :Comment: positive flux corresponds to ice gain 655 656 #. ``tendency_of_ice_amount_due_to_calving`` 657 658 :Units: kg m-2 year-1 659 :Description: calving flux 660 :Standard name: ``land_ice_specific_mass_flux_due_to_calving`` 661 :Comment: positive flux corresponds to ice gain 662 663 #. ``tendency_of_ice_amount_due_to_conservation_error`` 664 665 :Units: kg m-2 year-1 666 :Description: average mass conservation error flux over reporting interval 667 :Comment: positive flux corresponds to ice gain 668 669 #. ``tendency_of_ice_amount_due_to_discharge`` 670 671 :Units: kg m-2 year-1 672 :Description: discharge flux (calving, frontal melt, forced retreat) 673 :Standard name: ``land_ice_specific_mass_flux_due_to_calving_and_ice_front_melting`` 674 :Comment: positive flux corresponds to ice gain 675 676 #. ``tendency_of_ice_amount_due_to_flow`` 677 678 :Units: kg m-2 year-1 679 :Description: rate of change of ice amount due to flow 680 :Comment: positive flux corresponds to ice gain 681 682 #. ``tendency_of_ice_amount_due_to_surface_mass_flux`` 683 684 :Units: kg m-2 year-1 685 :Description: average surface mass flux over reporting interval 686 :Standard name: ``land_ice_surface_specific_mass_balance_flux`` 687 :Comment: positive flux corresponds to ice gain 688 689 #. ``tendency_of_ice_mass`` 690 691 :Units: Gt year-1 692 :Description: rate of change of the ice mass 693 694 #. ``tendency_of_ice_mass_due_to_basal_mass_flux`` 695 696 :Units: Gt year-1 697 :Description: average basal mass flux over reporting interval 698 :Standard name: ``tendency_of_land_ice_mass_due_to_basal_mass_balance`` 699 :Comment: positive flux corresponds to ice gain 700 701 #. ``tendency_of_ice_mass_due_to_calving`` 702 703 :Units: Gt year-1 704 :Description: calving flux 705 :Comment: positive flux corresponds to ice gain 706 707 #. ``tendency_of_ice_mass_due_to_conservation_error`` 708 709 :Units: Gt year-1 710 :Description: average mass conservation error flux over reporting interval 711 :Comment: positive flux corresponds to ice gain 712 713 #. ``tendency_of_ice_mass_due_to_discharge`` 714 715 :Units: Gt year-1 716 :Description: discharge flux (calving, frontal melt, forced retreat) 717 :Comment: positive flux corresponds to ice gain 718 719 #. ``tendency_of_ice_mass_due_to_flow`` 720 721 :Units: Gt year-1 722 :Description: rate of change of ice mass due to flow 723 :Comment: positive flux corresponds to ice gain 724 725 #. ``tendency_of_ice_mass_due_to_surface_mass_flux`` 726 727 :Units: Gt year-1 728 :Description: average surface mass flux over reporting interval 729 :Comment: positive flux corresponds to ice gain 730 731 #. ``tendency_of_subglacial_water_mass`` 732 733 :Units: Gt year-1 734 :Description: rate of change of the total mass of subglacial water 735 :Comment: positive flux corresponds to water gain 736 737 #. ``tendency_of_subglacial_water_mass_at_domain_boundary`` 738 739 :Units: Gt year-1 740 :Description: subglacial water flux at domain boundary (in regional model configurations) 741 :Comment: positive flux corresponds to water gain 742 743 #. ``tendency_of_subglacial_water_mass_at_grounded_margins`` 744 745 :Units: Gt year-1 746 :Description: subglacial water flux at grounded ice margins 747 :Comment: positive flux corresponds to water gain 748 749 #. ``tendency_of_subglacial_water_mass_at_grounding_line`` 750 751 :Units: Gt year-1 752 :Description: subglacial water flux at grounding lines 753 :Comment: positive flux corresponds to water gain 754 755 #. ``tendency_of_subglacial_water_mass_due_to_conservation_error`` 756 757 :Units: Gt year-1 758 :Description: subglacial water flux due to conservation error (mass added to preserve non-negativity) 759 :Comment: positive flux corresponds to water gain 760 761 #. ``tendency_of_subglacial_water_mass_due_to_flow`` 762 763 :Units: Gt year-1 764 :Description: rate of change subglacial water mass due to lateral flow 765 :Comment: positive flux corresponds to water gain 766 767 #. ``tendency_of_subglacial_water_mass_due_to_input`` 768 769 :Units: Gt year-1 770 :Description: subglacial water flux due to input 771 :Comment: positive flux corresponds to water gain 772 773 #. ``thickness_calving_threshold`` 774 775 :Units: m 776 :Description: threshold used by the 'calving at threshold' calving method 777 778 #. ``thk`` 779 780 :Units: m 781 :Description: land ice thickness 782 :Standard name: ``land_ice_thickness`` 783 784 #. ``thksmooth`` 785 786 :Units: m 787 :Description: thickness relative to smoothed bed elevation in Schoof's (2003) theory of bed roughness in SIA 788 789 #. ``tillphi`` 790 791 :Units: degrees 792 :Description: friction angle for till under grounded ice sheet 793 794 #. ``tillwat`` 795 796 :Units: m 797 :Description: effective thickness of subglacial water stored in till 798 799 #. ``topg`` 800 801 :Units: m 802 :Description: bedrock surface elevation 803 :Standard name: ``bedrock_altitude`` 804 805 #. ``topg_sl_adjusted`` 806 807 :Units: meters 808 :Description: sea-level adjusted bed topography (zero is at sea level) 809 810 #. ``topgsmooth`` 811 812 :Units: m 813 :Description: smoothed bed elevation in Schoof's (2003) theory of bed roughness in SIA 814 815 #. ``usurf`` 816 817 :Units: m 818 :Description: ice top surface elevation 819 :Standard name: ``surface_altitude`` 820 821 #. ``uvel`` 822 823 :Units: m year-1 824 :Description: horizontal velocity of ice in the X direction 825 :Standard name: ``land_ice_x_velocity`` 826 827 #. ``velbar`` 828 829 - ``ubar`` 830 831 :Units: m year-1 832 :Description: vertical mean of horizontal ice velocity in the X direction 833 :Standard name: ``land_ice_vertical_mean_x_velocity`` 834 835 - ``vbar`` 836 837 :Units: m year-1 838 :Description: vertical mean of horizontal ice velocity in the Y direction 839 :Standard name: ``land_ice_vertical_mean_y_velocity`` 840 841 #. ``velbar_mag`` 842 843 :Units: m year-1 844 :Description: magnitude of vertically-integrated horizontal velocity of ice 845 846 #. ``velbase`` 847 848 - ``uvelbase`` 849 850 :Units: m year-1 851 :Description: x-component of the horizontal velocity of ice at the base of ice 852 :Standard name: ``land_ice_basal_x_velocity`` 853 854 - ``vvelbase`` 855 856 :Units: m year-1 857 :Description: y-component of the horizontal velocity of ice at the base of ice 858 :Standard name: ``land_ice_basal_y_velocity`` 859 860 #. ``velbase_mag`` 861 862 :Units: m year-1 863 :Description: magnitude of horizontal velocity of ice at base of ice 864 865 #. ``velsurf`` 866 867 - ``uvelsurf`` 868 869 :Units: m year-1 870 :Description: x-component of the horizontal velocity of ice at ice surface 871 :Standard name: ``land_ice_surface_x_velocity`` 872 873 - ``vvelsurf`` 874 875 :Units: m year-1 876 :Description: y-component of the horizontal velocity of ice at ice surface 877 :Standard name: ``land_ice_surface_y_velocity`` 878 879 #. ``velsurf_mag`` 880 881 :Units: m year-1 882 :Description: magnitude of horizontal velocity of ice at ice surface 883 884 #. ``viscous_bed_displacement`` 885 886 :Units: meters 887 :Description: bed displacement in the viscous half-space bed deformation model; see BuelerLingleBrown 888 889 #. ``vonmises_calving_rate`` 890 891 :Units: m year-1 892 :Description: horizontal calving rate due to von Mises calving 893 894 #. ``vonmises_calving_threshold`` 895 896 :Units: Pa 897 :Description: threshold used by the 'von Mises' calving method 898 899 #. ``vonmises_stress`` 900 901 :Units: Pascal 902 :Description: tensile von Mises stress 903 904 #. ``vvel`` 905 906 :Units: m year-1 907 :Description: horizontal velocity of ice in the Y direction 908 :Standard name: ``land_ice_y_velocity`` 909 910 #. ``wallmelt`` 911 912 :Units: m year-1 913 :Description: wall melt into subglacial hydrology layer from (turbulent) dissipation of energy in transportable water 914 915 #. ``wvel`` 916 917 :Units: m year-1 918 :Description: vertical velocity of ice, relative to geoid 919 920 #. ``wvel_rel`` 921 922 :Units: m year-1 923 :Description: vertical velocity of ice, relative to base of ice directly below 924 925 #. ``wvelbase`` 926 927 :Units: m year-1 928 :Description: vertical velocity of ice at the base of ice, relative to the geoid 929 :Standard name: ``land_ice_basal_upward_velocity`` 930 931 #. ``wvelsurf`` 932 933 :Units: m year-1 934 :Description: vertical velocity of ice at ice surface, relative to the geoid 935 :Standard name: ``land_ice_surface_upward_velocity`` 936 937 .. _sec-ts_vars: 938 939 Scalar time-series 940 ------------------ 941 942 #. ``basal_mass_flux_floating`` 943 944 :Units: Gt year-1 945 :Description: total sub-shelf ice flux 946 :Standard name: ``tendency_of_land_ice_mass_due_to_basal_mass_balance`` 947 :Comment: positive means ice gain 948 949 #. ``basal_mass_flux_grounded`` 950 951 :Units: Gt year-1 952 :Description: total over grounded ice domain of basal mass flux 953 :Standard name: ``tendency_of_land_ice_mass_due_to_basal_mass_balance`` 954 :Comment: positive means ice gain 955 956 #. ``dt`` 957 958 :Units: year 959 :Description: mass continuity time step 960 961 #. ``grounding_line_flux`` 962 963 :Units: Gt year-1 964 :Description: total ice flux across the grounding line 965 :Comment: negative flux corresponds to ice loss into the ocean 966 967 #. ``ice_area_glacierized`` 968 969 :Units: m2 970 :Description: glacierized area 971 972 #. ``ice_area_glacierized_cold_base`` 973 974 :Units: m2 975 :Description: glacierized area where basal ice is cold 976 977 #. ``ice_area_glacierized_floating`` 978 979 :Units: m2 980 :Description: area of ice shelves in glacierized areas 981 :Standard name: ``floating_ice_shelf_area`` 982 983 #. ``ice_area_glacierized_grounded`` 984 985 :Units: m2 986 :Description: area of grounded ice in glacierized areas 987 :Standard name: ``grounded_ice_sheet_area`` 988 989 #. ``ice_area_glacierized_temperate_base`` 990 991 :Units: m2 992 :Description: glacierized area where basal ice is temperate 993 994 #. ``ice_enthalpy`` 995 996 :Units: J 997 :Description: enthalpy of the ice, including seasonal cover 998 999 #. ``ice_enthalpy_glacierized`` 1000 1001 :Units: J 1002 :Description: enthalpy of the ice in glacierized areas 1003 1004 #. ``ice_mass`` 1005 1006 :Units: kg 1007 :Description: mass of the ice, including seasonal cover 1008 :Standard name: ``land_ice_mass`` 1009 1010 #. ``ice_mass_glacierized`` 1011 1012 :Units: kg 1013 :Description: mass of the ice in glacierized areas 1014 1015 #. ``ice_volume`` 1016 1017 :Units: m3 1018 :Description: volume of the ice, including seasonal cover 1019 1020 #. ``ice_volume_cold`` 1021 1022 :Units: m3 1023 :Description: volume of cold ice, including seasonal cover 1024 1025 #. ``ice_volume_glacierized`` 1026 1027 :Units: m3 1028 :Description: volume of the ice in glacierized areas 1029 1030 #. ``ice_volume_glacierized_cold`` 1031 1032 :Units: m3 1033 :Description: volume of cold ice in glacierized areas 1034 1035 #. ``ice_volume_glacierized_floating`` 1036 1037 :Units: m3 1038 :Description: volume of ice shelves in glacierized areas 1039 1040 #. ``ice_volume_glacierized_grounded`` 1041 1042 :Units: m3 1043 :Description: volume of grounded ice in glacierized areas 1044 1045 #. ``ice_volume_glacierized_temperate`` 1046 1047 :Units: m3 1048 :Description: volume of temperate ice in glacierized areas 1049 1050 #. ``ice_volume_temperate`` 1051 1052 :Units: m3 1053 :Description: volume of temperate ice, including seasonal cover 1054 1055 #. ``limnsw`` 1056 1057 :Units: kg 1058 :Description: mass of the ice not displacing sea water 1059 :Standard name: ``land_ice_mass_not_displacing_sea_water`` 1060 1061 #. ``liquified_ice_flux`` 1062 1063 :Units: m3 / year 1064 :Description: rate of ice loss due to liquefaction, averaged over the reporting interval 1065 :Comment: positive means ice loss 1066 1067 #. ``max_diffusivity`` 1068 1069 :Units: m2 s-1 1070 :Description: maximum diffusivity 1071 1072 #. ``max_hor_vel`` 1073 1074 :Units: m year-1 1075 :Description: maximum abs component of horizontal ice velocity over grid in last time step during time-series reporting interval 1076 1077 #. ``sea_level_rise_potential`` 1078 1079 :Units: m 1080 :Description: the sea level rise that would result if all the ice were melted 1081 1082 #. ``surface_accumulation_rate`` 1083 1084 :Units: kg year-1 1085 :Description: surface accumulation rate (PDD model) 1086 1087 #. ``surface_melt_rate`` 1088 1089 :Units: kg year-1 1090 :Description: surface melt rate (PDD model) 1091 1092 #. ``surface_runoff_rate`` 1093 1094 :Units: kg year-1 1095 :Description: surface runoff rate (PDD model) 1096 1097 #. ``tendency_of_ice_mass`` 1098 1099 :Units: Gt year-1 1100 :Description: rate of change of the mass of ice, including seasonal cover 1101 1102 #. ``tendency_of_ice_mass_due_to_basal_mass_flux`` 1103 1104 :Units: Gt year-1 1105 :Description: total over ice domain of bottom surface ice mass flux 1106 :Standard name: ``tendency_of_land_ice_mass_due_to_basal_mass_balance`` 1107 :Comment: positive means ice gain 1108 1109 #. ``tendency_of_ice_mass_due_to_calving`` 1110 1111 :Units: Gt year-1 1112 :Description: calving flux 1113 :Standard name: ``tendency_of_land_ice_mass_due_to_calving`` 1114 :Comment: positive means ice gain 1115 1116 #. ``tendency_of_ice_mass_due_to_conservation_error`` 1117 1118 :Units: Gt year-1 1119 :Description: total numerical flux needed to preserve non-negativity of ice thickness 1120 :Comment: positive means ice gain 1121 1122 #. ``tendency_of_ice_mass_due_to_discharge`` 1123 1124 :Units: Gt year-1 1125 :Description: discharge flux (frontal melt, calving, forced retreat) 1126 :Standard name: ``tendency_of_land_ice_mass_due_to_calving_and_ice_front_melting`` 1127 :Comment: positive means ice gain 1128 1129 #. ``tendency_of_ice_mass_due_to_flow`` 1130 1131 :Units: Gt year-1 1132 :Description: rate of change of the mass of ice due to flow (i.e. prescribed ice thickness) 1133 1134 #. ``tendency_of_ice_mass_due_to_surface_mass_flux`` 1135 1136 :Units: Gt year-1 1137 :Description: total over ice domain of top surface ice mass flux 1138 :Standard name: ``tendency_of_land_ice_mass_due_to_surface_mass_balance`` 1139 :Comment: positive means ice gain 1140 1141 #. ``tendency_of_ice_mass_glacierized`` 1142 1143 :Units: Gt year-1 1144 :Description: rate of change of the ice mass in glacierized areas 1145 1146 #. ``tendency_of_ice_volume`` 1147 1148 :Units: m3 year-1 1149 :Description: rate of change of the ice volume, including seasonal cover 1150 1151 #. ``tendency_of_ice_volume_glacierized`` 1152 1153 :Units: m3 year-1 1154 :Description: rate of change of the ice volume in glacierized areas