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Table 1 List of selesscted adjustable parameters and their ranges of LOVECLIM

From: How parameter specification of an Earth system model of intermediate complexity influences its climate simulations

Index

Module

Parameter

Definition

Default

Range

P1

ECBILT-atm

ampwir

Scaling coefficient for the longwave radiation scheme (amplw)—general value (excluding the equator area).

1

[0.5, 1.5]

P2

ECBILT-atm

ampeqir

Scaling coefficient for the longwave radiation scheme (amplw)—for the equator area between 15° S and 15° N.

1.8

[1.0, 2.5]

P3

ECBILT-atm

expir

Exponent for the longwave radiation scheme

0.4

[0.2, 0.6]

P4

ECBILT-atm

relhmax

Precipitation also occurs if the total precipitable water below 500 hPa is above this relevant threshold.

0.83

[0.50, 0.90]

P5

ECBILT-atm

cwdrag

Drag coefficient to compute wind stress

2.1E-3

[1.0E-3, 4.0E-3]

P6

ECBILT-atm

cdrag

Drag coefficient to compute sensible and latent heat fluxes

1.4E-3

[1.0E-3, 2.0E-3]

P7

ECBILT-atm

uv10rfx

Reduction in wind speed between 800 hPa and 10 m

0.8

[0.7, 0.9]

P8

ECBILT-atm

dragan

Rotation of the wind vector in the boundary layer (unit: degree)

15

[10, 20]

P9

ECBILT-land

alphd

Albedo of snow

0.72

[0.60, 0.90]

P10

ECBILT-land

alphdi

Albedo of bare ice

0.62

[0.50, 0.80]

P11

ECBILT-land

alphs

Albedo of melting snow

0.53

[0.30, 0.60]

P12

ECBILT-land

albice

Albedo of melting ice (general)

0.44

[0.30, 0.60]

P13

ECBILT-land

albin

Albedo of melting ice (Arctic)

0.44

[0.30, 0.60]

P14

ECBILT-land

albis

Albedo of melting ice (Antarctic)

0.44

[0.30, 0.60]

P15

ECBILT-land

cgren

Increase in snow/ice albedo under cloudy conditions

0.04

[0.01, 0.10]

P16

ECBILT-atm

corAN

Reduction in precipitation over the Atlantic (North)

−0.085

[−0.10, −0.05]

P17

ECBILT-atm

corAS

Reduction in precipitation over the Atlantic (South)

−0.085

[− 0.10, − 0.05]

P18

ECBILT-atm

corAC

Reduction in precipitation over the Arctic

−0.25

[−0.30, − 0.20]

P19

ECBILT-land

evfac

Maximum evaporation factor over land

1

[0.5, 1]

P20

ECBILT-land

bmoismfix

Maximum bucket depth (unit: m)

0.15

[0.01, 0.50]

P21

CLIO-ocean

bering

Scaling factor for computing the Bering Strait throughflow

0.3

[0.2, 0.5]

P22

CLIO-ocean

ai

Coefficient of isopycnal diffusion (unit: m2 s−1)

300

[200, 400]

P23

CLIO-ocean

aitd

Gent-McWilliams thickness diffusion coefficient (unit: m2 s−1)

300

[200, 400]

P24

CLIO-ocean

ahs

Horizontal diffusivity for scalars (unit: m2 s−1)

100

[50, 150]

P25

CLIO-ocean

ahu

Horizontal viscosity (unit: m2 s−1)

1E5

[0.5E5, 1.5E5]