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6 changes: 3 additions & 3 deletions bld/namelist_files/namelist_definition_ctsm.xml
Original file line number Diff line number Diff line change
Expand Up @@ -1365,13 +1365,13 @@ eg. if nyr_forcing = 20, nyr_SASU = 5, number of analytic solutions is 20/5=4
<!-- ======================================================================================== -->
<entry id="use_lch4" type="logical" category="bgc"
group="clm_inparm" valid_values="" value=".false.">
Turn on methane model. Standard part of CLM45BGC model.
Turn on methane model. Standard part of Clm45Bgc model.
</entry>

<entry id="use_cn" type="logical" category="bgc"
group="clm_inparm" valid_values="" value=".false.">
CLM Biogeochemistry mode : Carbon Nitrogen model (CN)
(or CLM45BGC if phys=clm4_5, vsoilc_centbgc='on', and clm4me='on')
(or Clm45Bgc if phys=clm4_5, vsoilc_centbgc='on', and clm4me='on')
</entry>

<entry id="use_cndv" type="logical" category="bgc"
Expand Down Expand Up @@ -2484,7 +2484,7 @@ NOTE: THIS CORRESPONDS DIRECTLY TO THE env_run.xml VARIABLE OF THE SAME NAME.
group="default_settings" valid_values="sp,bgc,fates" >
Command line arguement for biogeochemistry mode for CLM4.5
sp = Satellitte Phenology
bgc = CLM4.5 BGC model with:
bgc = Clm45Bgc model with:
CENTURY model pools
Nitrification/De-nitrification
Methane model
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2 changes: 1 addition & 1 deletion bld/unit_testers/build-namelist_test.pl
Original file line number Diff line number Diff line change
Expand Up @@ -1595,7 +1595,7 @@ sub cat_and_create_namelistinfile {
print "Test ALL resolutions that have surface datasets with SP for 1850 and 2000\n";
print "========================================================================\n";

# Check for ALL resolutions with CLM50SP
# Check for ALL resolutions with Clm50Sp
my @resolutions = ( "360x720cru", "10x15", "4x5", "0.9x1.25", "1.9x2.5", "ne3np4", "ne3np4.pg3", "ne16np4.pg3", "ne30np4", "ne30np4.pg2", "ne30np4.pg3", "ne120np4.pg3", "ne0np4CONUS.ne30x8", "ne0np4.ARCTIC.ne30x4", "ne0np4.ARCTICGRIS.ne30x8", "C96", "mpasa480", "mpasa120" );
my @only2000_resolutions = ( "1x1_numaIA", "1x1_brazil", "1x1_mexicocityMEX", "1x1_vancouverCAN", "1x1_urbanc_alpha", "5x5_amazon", "0.125nldas2", "mpasa60", "mpasa15", "mpasa3p75" );
my @regional;
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148 changes: 74 additions & 74 deletions cime_config/testdefs/testlist_clm.xml

Large diffs are not rendered by default.

Original file line number Diff line number Diff line change
Expand Up @@ -53,7 +53,7 @@ Introduction

Groups developing Earth System Models generally account for the human footprint on the landscape in simulations of historical and future climates. Traditionally we have represented this footprint with natural vegetation types and particularly grasses because they resemble many common crops. Most modeling efforts have not incorporated more explicit representations of land management such as crop type, planting, harvesting, tillage, fertilization, and irrigation, because global scale datasets of these factors have lagged behind vegetation mapping. As this begins to change, we increasingly find models that will simulate the biogeophysical and biogeochemical effects not only of natural but also human-managed land cover.

AgroIBIS is a state-of-the-art land surface model with options to simulate dynamic vegetation (:ref:`Kucharik et al. 2000 <Kuchariketal2000>`) and interactive crop management (:ref:`Kucharik and Brye 2003 <KucharikBrye2003>`). The interactive crop management parameterizations from AgroIBIS (March 2003 version) were coupled as a proof-of-concept to the Community Land Model version 3 [CLM3.0, :ref:`Oleson et al. (2004) <Olesonetal2004>` ] (not published), then coupled to the CLM3.5 (:ref:`Levis et al. 2009 <Levisetal2009>`) and later released to the community with CLM4CN (:ref:`Levis et al. 2012 <Levisetal2012>`), and CLM4.5BGC. Additional updates after the release of CLM4.5 were available by request (:ref:`Levis et al. 2016 <Levisetal2016>`), and those are now incorporated into CLM5.
AgroIBIS is a state-of-the-art land surface model with options to simulate dynamic vegetation (:ref:`Kucharik et al. 2000 <Kuchariketal2000>`) and interactive crop management (:ref:`Kucharik and Brye 2003 <KucharikBrye2003>`). The interactive crop management parameterizations from AgroIBIS (March 2003 version) were coupled as a proof-of-concept to the Community Land Model version 3 [CLM3.0, :ref:`Oleson et al. (2004) <Olesonetal2004>` ] (not published), then coupled to the CLM3.5 (:ref:`Levis et al. 2009 <Levisetal2009>`) and later released to the community with CLM4CN (:ref:`Levis et al. 2012 <Levisetal2012>`) and CLM4.5BGC. Updates after CLM4.5 were available initially by request (:ref:`Levis et al. 2016 <Levisetal2016>`) and were later incorporated into CLM5.

With interactive crop management and, therefore, a more accurate representation of agricultural landscapes, we hope to improve the CLM's simulated biogeophysics and biogeochemistry. These advances may improve fully coupled simulations with the Community Earth System Model (CESM), while helping human societies answer questions about changing food, energy, and water resources in response to climate, environmental, land use, and land management change (e.g., :ref:`Kucharik and Brye 2003 <KucharikBrye2003>`; :ref:`Lobell et al. 2006 <Lobelletal2006>`). As implemented here, the crop model uses the same physiology as the natural vegetation but with uses different crop-specific parameter values, phenology, and allocation, as well as fertilizer and irrigation management.

Expand All @@ -70,7 +70,7 @@ In addition, CLM's default list of plant functional types (PFTs) includes an irr

.. _Table Crop plant functional types:

.. table:: Crop plant functional types (PFTs) included in CLM5BGCCROP.
.. table:: Crop plant functional types (PFTs) included in CLM's CROP model.

=== =========================== ================ ===========================
IVT Plant function types (PFTs) Management Class Crop Parameters Used
Expand Down Expand Up @@ -146,7 +146,7 @@ In addition, CLM's default list of plant functional types (PFTs) includes an irr
Phenology
^^^^^^^^^

CLM5-BGC includes evergreen, seasonally deciduous (responding to changes in day length), and stress deciduous (responding to changes in temperature and/or soil moisture) phenology algorithms (Chapter :numref:`rst_Vegetation Phenology and Turnover`). CLM5-BGC-crop uses the AgroIBIS crop phenology algorithm, consisting of three distinct phases.
CLM's BGC model includes evergreen, seasonally deciduous (responding to changes in day length), and stress deciduous (responding to changes in temperature and/or soil moisture) phenology algorithms (Chapter :numref:`rst_Vegetation Phenology and Turnover`). CLM's CROP model uses the AgroIBIS crop phenology algorithm, consisting of three distinct phases.

Phase 1 starts at planting and ends with leaf emergence, phase 2 continues from leaf emergence to the beginning of grain fill, and phase 3 starts from the beginning of grain fill and ends with physiological maturity and harvest.

Expand Down Expand Up @@ -217,7 +217,7 @@ Harvest is assumed to occur as soon as the crop reaches maturity. When :math:`GD

.. _Table Crop phenology parameters:

.. list-table:: Crop phenology and morphology parameters for the active crop plant functional types (PFTs) in CLM5BGCCROP. Numbers in the first row correspond to the list of PFTs in :numref:`Table Crop plant functional types`.
.. list-table:: Crop phenology and morphology parameters for the active crop plant functional types (PFTs) in CLM's CROP model. Numbers in the first row correspond to the list of PFTs in :numref:`Table Crop plant functional types`.
:header-rows: 1

* - \
Expand Down Expand Up @@ -569,7 +569,7 @@ Annual food crop yields (g dry matter m\ :sup:`-2`) can be calculated by saving

.. _Table Crop allocation parameters:

.. table:: Crop allocation parameters for the active crop plant functional types (PFTs) in CLM5BGCCROP. Numbers in the first row correspond to the list of PFTs in :numref:`Table Crop plant functional types`.
.. table:: Crop allocation parameters for the active crop plant functional types (PFTs) in CLM's CROP model. Numbers in the first row correspond to the list of PFTs in :numref:`Table Crop plant functional types`.

=========================================== ============== ============ ================== ====== ====== ========= ============= ================ ================ ================
\ temperate corn spring wheat temperate soybean cotton rice sugarcane tropical corn tropical soybean miscanthus switchgrass
Expand Down Expand Up @@ -622,7 +622,7 @@ where :math:`z_{top}^{\max }` is the maximum top-of-canopy height of the crop (:

Interactive Fertilization
'''''''''''''''''''''''''
CLM simulates fertilization by adding nitrogen directly to the soil mineral nitrogen pool to meet crop nitrogen demands using both industrial fertilizer and manure application. CLM's separate crop land unit ensures that natural vegetation will not access the fertilizer applied to crops. Fertilizer in CLM5BGCCROP is prescribed by crop functional types and varies spatially for each year based on the LUMIP land use and land cover change time series (LUH2 for historical and SSPs for future) (:ref:`Lawrence et al. 2016 <Lawrenceetal2016>`). One of two fields is used to prescribe industrial fertilizer based on the type of simulation. For non-transient simulations, annual fertilizer application in g N/m\ :sup:`2`/yr is specified on the land surface data set by the field CONST_FERTNITRO_CFT. In transient simulations, annual fertilizer application is specified on the land use time series file by the field FERTNITRO_CFT, which is also in g N/m\ :sup:`2`/yr. The values for both of these fields come from the LUMIP time series for each year. In addition to the industrial fertilizer, background manure fertilizer is specified on the parameter file by the field ``manunitro``. For perennial bioenergy crops, little fertilizer (56kg/ha/yr) is applied to switchgrass and no fertilizer is applied to Miscanthus. Note these rates are only based on local land management practices at the University of Illinois Energy Farm located in Central Midwestern United States :ref:`(Cheng et al., 2019)<Chengetal2019>` rather than the LUMIP timeseries. For the current CLM5BGCCROP, manure N is applied at a rate of 0.002 kg N/m\ :sup:`2`/yr. Because previous versions of CLM (e.g., CLM4) had rapid denitrification rates, fertilizer is applied slowly to minimize N loss (primarily through denitrification) and maximize plant uptake. The current implementation of CLM5 inherits this legacy, although denitrification rates are slower in the current version of the model (:ref:`Koven et al. 2013 <Kovenetal2013>`). As such, fertilizer application begins during the leaf emergence phase of crop development (phase 2) and continues for 20 days, which helps reduce large losses of nitrogen from leaching and denitrification during the early stage of crop development. The 20-day period is chosen as an optimization to limit fertilizer application to the emergence stage. A fertilizer counter in seconds, *f*, is set as soon as the leaf emergence phase for crops initiates:
CLM simulates fertilization by adding nitrogen directly to the soil mineral nitrogen pool to meet crop nitrogen demands using both industrial fertilizer and manure application. CLM's separate crop land unit ensures that natural vegetation will not access the fertilizer applied to crops. Fertilizer in CLM's CROP model is prescribed by crop functional types and varies spatially for each year based on the LUMIP land use and land cover change time series (LUH2 for historical and SSPs for future) (:ref:`Lawrence et al. 2016 <Lawrenceetal2016>`). One of two fields is used to prescribe industrial fertilizer based on the type of simulation. For non-transient simulations, annual fertilizer application in g N/m\ :sup:`2`/yr is specified on the land surface data set by the field CONST_FERTNITRO_CFT. In transient simulations, annual fertilizer application is specified on the land use time series file by the field FERTNITRO_CFT, which is also in g N/m\ :sup:`2`/yr. The values for both of these fields come from the LUMIP time series for each year. In addition to the industrial fertilizer, background manure fertilizer is specified on the parameter file by the field ``manunitro``. For perennial bioenergy crops, little fertilizer (56kg/ha/yr) is applied to switchgrass and no fertilizer is applied to Miscanthus. Note these rates are only based on local land management practices at the University of Illinois Energy Farm located in Central Midwestern United States :ref:`(Cheng et al., 2019)<Chengetal2019>` rather than the LUMIP timeseries. In CLM5, manure N is applied at a rate of 0.002 kg N/m\ :sup:`2`/yr. Because previous versions of CLM (e.g., CLM4) had rapid denitrification rates, fertilizer is applied slowly to minimize N loss (primarily through denitrification) and maximize plant uptake. The current implementation of CLM5 inherits this legacy, although denitrification rates are slower in the current version of the model (:ref:`Koven et al. 2013 <Kovenetal2013>`). As such, fertilizer application begins during the leaf emergence phase of crop development (phase 2) and continues for 20 days, which helps reduce large losses of nitrogen from leaching and denitrification during the early stage of crop development. The 20-day period is chosen as an optimization to limit fertilizer application to the emergence stage. A fertilizer counter in seconds, *f*, is set as soon as the leaf emergence phase for crops initiates:

.. math::
:label: 25.17
Expand Down Expand Up @@ -658,7 +658,7 @@ where :math:`baset` is the *base temperature for GDD* (7\ :sup:`th` row) in :num

Separate reproductive pool
''''''''''''''''''''''''''
One notable difference between natural vegetation and crops is the presence of reproductive carbon and nitrogen pools. Accounting for the reproductive pools helps determine whether crops are performing reasonably through yield calculations. The reproductive pool is maintained similarly to the leaf, stem, and fine root pools, but allocation of carbon and nitrogen does not begin until the grain fill stage of crop development. Equation :eq:`25.5` describes the carbon and nitrogen allocation coefficients to the reproductive pool. In CLM5BGCCROP, as allocation declines in stem, leaf, and root pools (see section :numref:`Grain fill to harvest`) during the grain fill stage of growth, increasing amounts of carbon and nitrogen are available for grain development.
One notable difference between natural vegetation and crops is the presence of reproductive carbon and nitrogen pools. Accounting for the reproductive pools helps determine whether crops are performing reasonably through yield calculations. The reproductive pool is maintained similarly to the leaf, stem, and fine root pools, but allocation of carbon and nitrogen does not begin until the grain fill stage of crop development. Equation :eq:`25.5` describes the carbon and nitrogen allocation coefficients to the reproductive pool. In CLM5, as allocation declines in stem, leaf, and root pools (see section :numref:`Grain fill to harvest`) during the grain fill stage of growth, increasing amounts of carbon and nitrogen are available for grain development.

.. _Tillage:

Expand Down
18 changes: 9 additions & 9 deletions doc/source/users_guide/overview/getting-help.rst
Original file line number Diff line number Diff line change
Expand Up @@ -60,9 +60,9 @@ If you have any problems, additional questions, bug reports, or any other feedba

.. _acronyms-and-terms:

---------------------------------------
Some Acronym's and Terms We'll be Using
---------------------------------------
--------------------------------------
Some Acronyms and Terms We'll be Using
--------------------------------------

CAM
Community Atmosphere Model (CAM). The prognostically active atmosphere model component of CESM.
Expand All @@ -76,13 +76,13 @@ CIME
CLM
Community Land Model (CLM). The prognostically active land model component of CESM.

CLMBGC
Community Land Model (|version|) with BGC Biogeochemistry. Uses CN Biogeochemistry with vertically resolved soil Carbon, CENTURY model like pools, and Nitrification/De-Nitrification. The CLM_CONFIG_OPTS option for this is
ClmBgc (formatted as the corresponding compset alias, e.g. Clm60Bgc)
Community Land Model (|version|) with BGC Biogeochemistry. Uses CN Biogeochemistry with vertically resolved soil Carbon, CENTURY model like pools, and Nitrification/De-Nitrification. The CLM_CONFIG_OPTS option is

``./xmlchange CLM_CONFIG_OPTS="phys clm5_0 -bgc bgc``

CLMBGC-Crop
Community Land Model (|version|) with BGC Biogeochemistry and prognotic crop. The CLM_CONFIG_OPTS option for this is
ClmBgcCrop (formatted as the corresponding compset alias, e.g. Clm60BgcCrop)
Community Land Model (|version|) with BGC Biogeochemistry and prognotic crop. The CLM_CONFIG_OPTS option for this is

``./xmlchange CLM_CONFIG_OPTS="phys clm5_0 -bgc bgc -crop``

Expand All @@ -91,8 +91,8 @@ CLMCN

``./xmlchange CLM_CONFIG_OPTS="-bgc cn" -append``

CLMSP
Community Land Model (CLM) with Satellite Phenology (SP) (either CLM4.0, CLM4.5 or |version|) The CLM_CONFIG_OPTS option for this is
ClmSp (formatted as the corresponding compset alias, e.g. Clm60Sp)
Community Land Model (CLM) with Satellite Phenology (SP) (either CLM4.0, CLM4.5 or |version|). The CLM_CONFIG_OPTS option for this is

``./xmlchange CLM_CONFIG_OPTS="-bgc sp" -append``

Expand Down
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