ICON-NWP simulations of the mid-Holocene West African Monsoon using parameterized and explicit convection and mid-Holocene land surface

The experiment aims to investigate how the representation of convection influences the West African Monsoon during the mid-Holocene.

Atmospheric and SST input data originate from the MPI-ESM Holocene simulations reflecting Holocene condition.

External Parameters (surface condition) were adjusted to reflect mid-Holocene vegetation conditions. We prescribe an idealized, denser vegetation cover based on the simulated desert fraction (1-vegetation fraction) of the transient mid-Holocene MPI-ESM simulations (Dallmeyer et al., 2020).


We use the ICON (ICOsahedral Nonhydrostatic) model framework version 2.5.0 (see Zängl et al. (2014) for more details).


The provided data covers one simulation from June to October (JJASO) for the year 7024 before present (BP) with the year 2000 as the reference year.


The time axes of the NetCDF files reflect the model year which is based on the time axes of the MPI-ESM slo0021a Holocene simulations. The artificial model year 1001 in slo0021a refers to the year 8000 BP. Therefore, the model year 1978 refers to the year 7024 BP.


The experiment compares a 5km horizontal resolution, deep convection resolving simulation with a 40km-horizontal resolution, parameterized convection simulation.


The 40km-domain (DOM01) covers a range from 70.5°W - 99.5°E; 49°S - 59°N

The 5km-domain (DOM04) covers a range from 37°W - 53°E; 0°N - 40°N


The dataset provides daily mean values on the triangular ICON grid.


The datasets provide atmospheric (_atm_ 3D), surface (_sfc_ 2D) and precipitation ( _prec_ 2D) and forcing (extpar_) data and the following variables:

w_so, lhfl_s, shfl_s, runoff_s, runoff_g, rain_con_rate, rain_gsp_rate, geopot, temp, rh, qv, u, v, w, clc


Precipitation and forcing data are combined into 2 data files for DOM01 and DOM04. Surface data are combined into 2 data files for DOM01.

The dataset with the suffix "_constSM_sep_" contains the data for the constant soil moisture simulations. In these simulations we prescribe the same constant soil moisture field, representing 1st September-soil moisture conditions, both for the 40km-P (DOM01) and the 5km-E (DOM04) simulations.


The DS ("Dry Sahara") simulations refer to the simulations where we prescribe present-day land surface cover - the Sahara remains a desert.

The GS ("Green Sahara") simulations represent idealized mid-Holocene conditions where we prescribe a higher vegetation cover that also extend further north. The Sahara reflects more savannah-like vegetation.

INSPIRE

Identification

File identifier
wdc-climate.de:3965486 XML
Hierarchy level
collection
Online resource
Resource identifier
code

ICON-NWP_mH_pd
code

doi:10.26050/WDCC/ICON-NWP_mH_pd
Metadata language

eng; USA
Encoding
Format

NetCDF
Projection
 

Classification of data and services

Coupled resource

Coupled resource
 
 

Classification of data and services

Coupled resource

Coupled resource
 
 

Keywords

Other keywords

Keywords

  • ICON
Keywords

  • Precipitation
Keywords

  • West Africa
Keywords

  • convection-permitting
Keywords

  • explicitly resolved convection
Keywords

  • midHolocene
Keywords

  • resolved deep convection
 
 

Geographic coverage

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Temporal reference

Temporal extent
Begin
-7024-05-30
End
-7024-10-31
Temporal extent
Date (Publication)
2023-03-02
 

Conformity

Conformity
Conformity
 

Conformity

Conformity
Conformity
 

Responsible organization (s)

Contact for the resource
Organisation name

Max Planck Institute for Meteorology
 

Responsible organization (s)

Contact for the resource
Organisation name

Max Planck Institute for Meteorology
 

Metadata information

Contact for the metadata
Organisation name

Max Planck Institute for Meteorology
Date stamp
2022-12-15T14:30:34
Metadata language

eng; USA
 
 

SDS

Conformance class 1: invocable

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Endpoint URL
Technical specification
 

Conformance class 2: interoperable

Access constraints

Limitation
 

Use constraints

Limitation
 

Responsible custodian

Contact for the resource
 
 
 

Overviews

Spatial extent

N
S
E
W
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Keywords


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