DOI: 10.5281/zenodo.10624475
title: Process-Based Intercomparison of Water Isotope-Enabled Models and Reanalysis Nudging Effects

description: Simulations of Water Isotope-Enabled Models Nudged Toward Reanalyses [Period: 1979 - 2020]

* The associated article utilizing this dataset

Bong, H., Cauquoin, A., Okazaki, A., Chang, E.-C., Werner, M., Wei, Z., Yeo, N., & Yoshimura, K. (2024). Process-based intercomparison of water isotope-enabled models and reanalysis nudging effects. Journal of Geophysical Research: Atmospheres, 129, e2023JD038719. https://doi.org/10.1029/2023JD038719

* Experiment Name

1. IsoGSM.JRA552. IsoGSM.NCEPR23. IsoGSM.ERA54. MIROC5-iso.JRA555. ECHAM6-wiso.JRA55

* Selected 17 Levels (hPa)

 1000, 925, 850, 700, 600, 500, 400, 300, 250, 200, 150, 100, 70, 50, 30, 20, 10 

* Variables




NAME
LEVELS
LONG NAME
UNIT


temp
1
Surface_temperatrue
degC


temp2
1
2m_temperature
degC


pres  
1
Surface_pressure
hPa


ev
1
Surface_evaporation_rate
mm/day


ev1  
1
Surface_evaporation_rate_1
mm/day


ev2
1
Surface_evaporation_rate_2
mm/day


pr
1
Surface_precipitation_rate
mm/day


pr1
1
Surface_precipitation_rate_1
mm/day


pr2
1
Surface_precipitation_rate_2
mm/day


spfh2m
1
Surface_specific_humidity
kg/kg


spfh12m
1
Surface_specific_humidity_1
kg/kg


spfh22m
1
Surface_specific_humidity_2
kg/kg


d18O
17
d18O_specific_humidity
per mil


d18Oe
1
d18O_evaporation
per mil


d18Op
1
d18O_precipitation
per mil


d18Os
1
Surface_d18O_specific_humidity
per mil


dD
17
dD_specific_humidity
per mil


dDe
1
dD_evaporation
per mil


dDp
1
dD_precipitation
per mil


dDs
1
Surface_dD_specific_humidity
per mil


dexcess
17
d-excess_specific_humidity
per mil


dexcesse
1
d-excess_evaporation
per mil


dexcessp
1
d-excess_precipitation
per mil


dexcesss
1
Surface_d-excess_specific_humidity
per mil


q
17
Specific_humidity
kg/kg


q1
17
Specific_humidity_1
kg/kg


q2
17
Specific_humidity_2
kg/kg


t
17
Temperature
degC


u
17
U_Wind
m/s


v
17
V_Wind
m/s


w
17
W_Wind
m/s


omega
17
Pressure_vertical_velocity
Pa/s


gh
17
Geopotential_height
gpm




* delta for water isotopes in precipitation   d18Op = ((pr1/pr)*1. - 1.)*1000.   dDp   = ((pr2/pr)*1. - 1.)*1000.* delta for water isotopes in evaporation   d18Oe = ((ev1/ev)*1. - 1.)*1000.   dDe   = ((ev2/ev)*1. - 1.)*1000.* delta for water isotopes in near-surface vapor   d18Os = ((spfh12m/spfh2m)*1. - 1.)*1000.   dDs   = ((spfh22m/spfh2m)*1. - 1.)*1000.* delta for water isotopes in atmospheric vapor (17 levels)   d18O  = ((q1/q)*1. - 1.)*1000.   dD    = ((q2/q)*1. - 1.)*1000.

* Files

|-- Total.monthly.IsoGSM.JRA55.nc|-- Total.monthly.IsoGSM.NCEPR2.nc|-- Total.monthly.IsoGSM.ERA5.nc|-- Total.monthly.MIROC5-iso.JRA55.nc|-- Total.monthly.ECHAM6-wiso.JRA55.nc||-- IsoGSM.JRA55|    |-- Total.climatology.IsoGSM.JRA55.nc|    |-- Total.seasmean.DJF.IsoGSM.JRA55.nc|    |-- Total.seasmean.JJA.IsoGSM.JRA55.nc|    |-- Total.seasmean.MAM.IsoGSM.JRA55.nc|    |-- Total.seasmean.SON.IsoGSM.JRA55.nc|    |-- Total.yearly.IsoGSM.JRA55.nc| |-- IsoGSM.NCEPR2|    |-- Total.climatology.IsoGSM.NCEPR2.nc|    |-- Total.seasmean.DJF.IsoGSM.NCEPR2.nc|    |-- Total.seasmean.JJA.IsoGSM.NCEPR2.nc|    |-- Total.seasmean.MAM.IsoGSM.NCEPR2.nc|    |-- Total.seasmean.SON.IsoGSM.NCEPR2.nc|    |-- Total.yearly.IsoGSM.NCEPR2.nc| |-- IsoGSM.ERA5|    |-- Total.climatology.IsoGSM.ERA5.nc|    |-- Total.seasmean.DJF.IsoGSM.ERA5.nc|    |-- Total.seasmean.JJA.IsoGSM.ERA5.nc|    |-- Total.seasmean.MAM.IsoGSM.ERA5.nc|    |-- Total.seasmean.SON.IsoGSM.ERA5.nc|    |-- Total.yearly.IsoGSM.ERA5.nc| |-- MIROC5-iso.JRA55|    |-- Total.climatology.MIROC5-iso.JRA55.nc|    |-- Total.seasmean.DJF.MIROC5-iso.JRA55.nc|    |-- Total.seasmean.JJA.MIROC5-iso.JRA55.nc|    |-- Total.seasmean.MAM.MIROC5-iso.JRA55.nc|    |-- Total.seasmean.SON.MIROC5-iso.JRA55.nc|    |-- Total.yearly.MIROC5-iso.JRA55.nc| |-- ECHAM6-wiso.JRA55|    |-- Total.climatology.ECHAM6-wiso.JRA55.nc|    |-- Total.seasmean.DJF.ECHAM6-wiso.JRA55.nc|    |-- Total.seasmean.JJA.ECHAM6-wiso.JRA55.nc|    |-- Total.seasmean.MAM.ECHAM6-wiso.JRA55.nc|    |-- Total.seasmean.SON.ECHAM6-wiso.JRA55.nc|    |-- Total.yearly.ECHAM6-wiso.JRA55.nc| |=== Interpolated Dataset for Comparison (T42) ===| |-- Total.monthly.IsoGSM.JRA55.T42.nc|-- Total.monthly.IsoGSM.NCEPR2.T42.nc|-- Total.monthly.IsoGSM.ERA5.T42.nc|-- Total.monthly.MIROC5-iso.JRA55.T42.nc|-- Total.monthly.ECHAM6-wiso.JRA55.T42.nc||-- IsoGSM.JRA55.T42|    |-- Total.climatology.IsoGSM.JRA55.T42.nc|    |-- Total.seasmean.DJF.IsoGSM.JRA55.T42.nc|    |-- Total.seasmean.JJA.IsoGSM.JRA55.T42.nc|    |-- Total.seasmean.MAM.IsoGSM.JRA55.T42.nc|    |-- Total.seasmean.SON.IsoGSM.JRA55.T42.nc|    |-- Total.yearly.IsoGSM.JRA55.T42.nc||-- IsoGSM.NCEPR2.T42|    |-- Total.climatology.IsoGSM.NCEPR2.T42.nc|    |-- Total.seasmean.DJF.IsoGSM.NCEPR2.T42.nc|    |-- Total.seasmean.JJA.IsoGSM.NCEPR2.T42.nc|    |-- Total.seasmean.MAM.IsoGSM.NCEPR2.T42.nc|    |-- Total.seasmean.SON.IsoGSM.NCEPR2.T42.nc|    |-- Total.yearly.IsoGSM.NCEPR2.T42.nc||-- IsoGSM.ERA5.T42|    |-- Total.climatology.IsoGSM.ERA5.T42.nc|    |-- Total.seasmean.DJF.IsoGSM.ERA5.T42.nc|    |-- Total.seasmean.JJA.IsoGSM.ERA5.T42.nc|    |-- Total.seasmean.MAM.IsoGSM.ERA5.T42.nc|    |-- Total.seasmean.SON.IsoGSM.ERA5.T42.nc|    |-- Total.yearly.IsoGSM.ERA5.T42.nc||-- MIROC5-iso.JRA55.T42|    |-- Total.climatology.MIROC5-iso.JRA55.T42.nc|    |-- Total.seasmean.DJF.MIROC5-iso.JRA55.T42.nc|    |-- Total.seasmean.JJA.MIROC5-iso.JRA55.T42.nc|    |-- Total.seasmean.MAM.MIROC5-iso.JRA55.T42.nc|    |-- Total.seasmean.SON.MIROC5-iso.JRA55.T42.nc|    |-- Total.yearly.MIROC5-iso.JRA55.T42.nc||-- ECHAM6-wiso.JRA55.T42     |-- Total.climatology.ECHAM6-wiso.JRA55.T42.nc     |-- Total.seasmean.DJF.ECHAM6-wiso.JRA55.T42.nc     |-- Total.seasmean.JJA.ECHAM6-wiso.JRA55.T42.nc     |-- Total.seasmean.MAM.ECHAM6-wiso.JRA55.T42.nc     |-- Total.seasmean.SON.ECHAM6-wiso.JRA55.T42.nc     |-- Total.yearly.ECHAM6-wiso.JRA55.T42.nc
description: The products from the Stable Water Isotope Intercomparison Group, Phase 2, are currently used for numerous studies, allowing water isotope model-data comparisons with various isotope-enabled atmospheric general circulation model (AGCMs) outputs. However, the simulations under this framework were performed using different parameterizations and forcings. Therefore, a uniform experimental design with state-of-the-art AGCMs is required to interpret isotope observations rigorously. Here, we have built a publicly available dataset of isotope-enabled nudged simulations from 1979 to 2020, utilizing three models and three reanalyses to investigate the ability of the isotope-enabled AGCMs to reproduce the spatial and temporal patterns of water isotopic composition observed at the surface and in atmospheric airborne water.