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  • Chen, Xiong  (8)
  • Li, Xin  (8)
  • 1
    Online Resource
    Online Resource
    Interdecadal change in the relationship between the winter North Pacific storm track and the East Asian winter monsoon
    American Meteorological Society ; 2021
    In:  Journal of Climate ( 2021-01-18), p. 1-57
    Details
    In: Journal of Climate, American Meteorological Society, ( 2021-01-18), p. 1-57
    Abstract: Based on the daily NCEP reanalysis, the present study investigates the interdecadal change in the relationship between the winter North Pacific storm track (WNPST) and the East Asian winter monsoon (EAWM), and evaluates the WNPST-EAWM relationship in 17 CMIP6 models. The results show that the out-of-phase WNPST-EAWM relationship underwent an interdecadal change in the mid-1980s. The WNPST-EAWM relationship became less significant during P2 (1990-2015). The atmospheric circulation anomaly related to the EAWM during P1 (1955-1980) is more robust than that during P2. The interdecadal weakening WNPST-EAWM relationship may be attributed to the interdecadal damping WNPST-EAWM interaction. The EAWM-related anomalous baroclinic energy conversion and moisture effect, including meridional and vertical eddy moisture fluxes, contribute to the significant attenuation of the WNPST during P1. The transient eddy-induced dynamic forcing and thermal forcing anomalies, as well as the barotropic process represented by the local Eliassen-Palm flux divergence associated with WNPST, can also significantly manipulate the upper-tropospheric jet during P1. However, the atmospheric circulation and interaction between the WNPST and EAWM during P2 are not as significant as those during P1. The effect of ENSO on the WNPST is significantly different before and after the mid-1980s. After the mid-1980s, the WNPST shows the characteristic of moving equatorward during El Niño events. It seems that ENSO takes over the WNPST from the EAWM after the mid-1980s. In addition, except for BCC-ESM1, CanESM5 and SAM0-UNICON, most of the CMIP6 models cannot reproduce the significant out-of-phase WNPST-EAWM relationship.
    Type of Medium: Online Resource
    ISSN: 0894-8755 , 1520-0442
    URL: Article
    DOI: 10.1175/JCLI-D-20-0372.1
    RVK:
    UA 4548
    Language: Unknown
    Publisher: American Meteorological Society
    Publication Date: 2021
    detail.hit.zdb_id: 246750-1
    detail.hit.zdb_id: 2021723-7
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  • 2
    Online Resource
    Online Resource
    Interannual Variability of the Winter North Atlantic Storm Track in CMIP5 Models
    Meteorological Society of Japan ; 2018
    In:  SOLA Vol. 14, No. 0 ( 2018), p. 74-78
    Details
    In: SOLA, Meteorological Society of Japan, Vol. 14, No. 0 ( 2018), p. 74-78
    Type of Medium: Online Resource
    ISSN: 1349-6476
    URL: Article
    DOI: 10.2151/sola.2018-013
    Language: English
    Publisher: Meteorological Society of Japan
    Publication Date: 2018
    detail.hit.zdb_id: 2222926-7
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  • 3
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    Online Resource
    Influence of cumulus convection schemes on winter North Pacific storm tracks in the regional climate model RegCM4.5
    Wiley ; 2020
    In:  International Journal of Climatology Vol. 40, No. 2 ( 2020-02), p. 1294-1305
    Details
    In: International Journal of Climatology, Wiley, Vol. 40, No. 2 ( 2020-02), p. 1294-1305
    Abstract: Based on the regional climate model RegCM4.5 driven by National Centers for Environmental Prediction (NCEP) reanalysis, the influence of cumulus convection schemes (CCSs) on the winter North Pacific storm track (WNPST) is investigated. It is found that the climatology, interannual variation, spatial modes and characteristic indices of the WNPST are extremely sensitive to the choice of CCS. Among the selected CCSs, WNPST climatology and interannual variation in the Kuo scheme are better than in other CCSs, with a smaller root mean square error. The WNPST spatial modes and strength indices in the Kuo and Grell schemes are more consistent with NCEP reanalysis. The Kuo scheme has a stronger ability to simulate the WNPST latitude index and the interannual variation of winter characteristic indices. In addition, we attempt to reveal the possible reasons for the different performances of CCSs from the viewpoint of baroclinic energy conversion (BCEC). It is found that the energy conversion from the mean available potential energy to the eddy available potential energy (BCEC1) has no significant difference among the Kuo, Grell and Emanuel schemes, while energy conversion from the eddy available potential energy to eddy kinetic energy (BCEC2) in the Kuo scheme is obviously better than other CCSs, which means that the differences in BCEC2 among these CCSs may be one of the key reasons affecting the simulation results of the WNPST.
    Type of Medium: Online Resource
    ISSN: 0899-8418 , 1097-0088
    URL: Issue
    URL: Article
    DOI: 10.1002/joc.v40.2
    DOI: 10.1002/joc.6273
    RVK:
    RA 1000
    Language: English
    Publisher: Wiley
    Publication Date: 2020
    detail.hit.zdb_id: 1491204-1
    SSG: 14
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  • 4
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    Online Resource
    Impacts of two types of El-Niño on the winter North Pacific storm track
    IOP Publishing ; 2020
    In:  Environmental Research Letters Vol. 15, No. 9 ( 2020-09-01), p. 094062-
    Details
    In: Environmental Research Letters, IOP Publishing, Vol. 15, No. 9 ( 2020-09-01), p. 094062-
    Abstract: In the present study, the impacts of eastern Pacific (EP) and central Pacific El-Niño on the winter North Pacific storm track (WNPST) are investigated, and the possible reasons for the different responses of the WNPST to the two types of El-Niño are revealed. It is found that only EP El-Niño episodes have a distinct influence on the strength and movement of the WNPST. During EP El-Niño episodes, the WNPST is significantly enhanced and extended equatorward. The patterns of atmospheric baroclinicity anomalies are consistent during the two types of El-Niño. The enhancement and equatorward extension of the WNPST during EP El-Niño episodes can be attributed to anomalous baroclinic energy conversion. In addition, EP El-Niño episodes can also intensify the strength of the WNPST by warming the lower-tropospheric air upstream of the WNPST, which generates more synoptic-scale disturbances entering the WNPST.
    Type of Medium: Online Resource
    ISSN: 1748-9326
    URL: Article
    DOI: 10.1088/1748-9326/aba65f
    Language: Unknown
    Publisher: IOP Publishing
    Publication Date: 2020
    detail.hit.zdb_id: 2255379-4
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  • 5
    Online Resource
    Online Resource
    The Climatology and the Midwinter Suppression of the Cold Season North Pacific Storm Track in CMIP6 Models
    American Meteorological Society ; 2021
    In:  Journal of Climate ( 2021-06-04), p. 1-56
    Details
    In: Journal of Climate, American Meteorological Society, ( 2021-06-04), p. 1-56
    Abstract: The reproducibility of climatology and the midwinter suppression of cold season North Pacific storm track (NPST) in historical runs of 18 CMIP6 models is evaluated against the NCEP reanalysis data. The results show that the position of the climatological peak area of 850 hPa meridional eddy heat flux ( v ′ t ′ 850) is well captured by these models. The spatial patterns of climatological v ′ t ′ 850 are basically consistent with the NCEP reanalysis. Generally, NorESM2-LM and CESM2-WACCM present a relatively strong capability to reproduce the climatological amplitude of v ′ t ′ 850 with lower RMSE than the other models. Compared with CMIP5 models, the inter-model spread of v ′ t ′ 850 climatology among the CMIP6 models is smaller, and their multi-model ensemble is closer to the NCEP reanalysis. The geographical distribution in more than half of the selected models is further south and east. For the subseasonal variability of v ′ t ′ 850, nearly half of the models exhibit a double-peak structure. In contrast, the apparent midwinter suppression in the NPST represented by the 250 hPa filtered meridional wind variance ( v ′ v ′ 250) is reproduced by all the selected models. In addition, the present study investigates the possible reasons for simulation biases regarding climatological NPST amplitude. It is found that a higher model horizontal resolution significantly intensifies the climatological v ′ v ′ 250. There is a significant in-phase relationship between climatological v ′ t ′ 250 and the intensity of the East Asian winter monsoon (EAWM). However, the climatological v ′ t ′ 850 is not sensitive to the model grid spacing. Additionally, the climatological low-tropospheric atmospheric baroclinicity is uncorrelated with climatological v ′ v ′ 250. The stronger climatological baroclinic energy conversion is associated with the stronger climatological v ′ t ′ 850.
    Type of Medium: Online Resource
    ISSN: 0894-8755 , 1520-0442
    URL: Article
    DOI: 10.1175/JCLI-D-20-0337.1
    RVK:
    UA 4548
    Language: Unknown
    Publisher: American Meteorological Society
    Publication Date: 2021
    detail.hit.zdb_id: 246750-1
    detail.hit.zdb_id: 2021723-7
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  • 6
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    Online Resource
    Association of the Zonal Migration of North Pacific Storm Track With the East Asian Monsoon in Boreal Wintertime
    American Geophysical Union (AGU) ; 2021
    In:  Journal of Geophysical Research: Atmospheres Vol. 126, No. 4 ( 2021-02-27)
    Details
    In: Journal of Geophysical Research: Atmospheres, American Geophysical Union (AGU), Vol. 126, No. 4 ( 2021-02-27)
    Abstract: The enhanced East Asian winter monsoon (EAWM) is related to the significantly suppressed (intensified) winter North Pacific storm track (WNPST) activity over the northwest (northeast) Pacific The zonal position of WNPST peak area in strong EAWM years is farther eastward approximately 10° than that in weak EAWM years The EAWM‐related anomalous baroclinic energy transfer, buoyancy conversion and moisture effect contribute to the zonal migration of WNPST
    Type of Medium: Online Resource
    ISSN: 2169-897X , 2169-8996
    URL: Article
    DOI: 10.1029/2020JD033790
    Language: English
    Publisher: American Geophysical Union (AGU)
    Publication Date: 2021
    detail.hit.zdb_id: 710256-2
    detail.hit.zdb_id: 2016800-7
    detail.hit.zdb_id: 2969341-X
    SSG: 16,13
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  • 7
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    Online Resource
    Further inquiry into the interaction between the winter North Pacific storm track and the East Asian trough
    Springer Science and Business Media LLC ; 2020
    In:  Climate Dynamics Vol. 55, No. 3-4 ( 2020-08), p. 471-483
    Details
    In: Climate Dynamics, Springer Science and Business Media LLC, Vol. 55, No. 3-4 ( 2020-08), p. 471-483
    Abstract: Based on the daily ERA-Interim reanalysis, interactions between the winter North Pacific storm track (WNPST) and the East Asian trough (EAT) on the interannual scale are further explored from the perspective of energy conversion and the simplified quasi-geostrophic potential vorticity equation. There is a prominent out-of-phase relationship between the EAT and WNPST on the interannual scale. It is baroclinic energy conversion rather than barotropic energy conversion that is the main physical process that the EAT affects the WNPST. When the EAT is intensified, the energy conversion from mean available potential energy to eddy available potential energy decreases; further, the energy conversion from eddy available potential energy to eddy kinetic energy is attenuated, which leads directly to remarkable weakening in the strength of the WNPST in its peak area and the region west of the date line. In addition, when the WNPST is enhanced, the WNPST dynamic forcing contributes to lowering the geopotential height near the EAT and thus profits to recover the strength of the EAT, while the thermal forcing of WNPST is opposite. However, their joint effect is still to strengthen the EAT, indicating that the impact of WNPST dynamic forcing on the EAT is stronger than that of thermal forcing. The interaction between the WNPST and EAT may be a way for the WNPST to maintain itself.
    Type of Medium: Online Resource
    ISSN: 0930-7575 , 1432-0894
    URL: Article
    DOI: 10.1007/s00382-020-05279-2
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2020
    detail.hit.zdb_id: 382992-3
    detail.hit.zdb_id: 1471747-5
    SSG: 16,13
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  • 8
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    Online Resource
    Correction to: Further inquiry into the interaction between the winter North Pacific storm track and the East Asian trough
    Springer Science and Business Media LLC ; 2020
    In:  Climate Dynamics Vol. 55, No. 3-4 ( 2020-08), p. 485-486
    Details
    In: Climate Dynamics, Springer Science and Business Media LLC, Vol. 55, No. 3-4 ( 2020-08), p. 485-486
    Type of Medium: Online Resource
    ISSN: 0930-7575 , 1432-0894
    URL: Article
    DOI: 10.1007/s00382-020-05310-6
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2020
    detail.hit.zdb_id: 382992-3
    detail.hit.zdb_id: 1471747-5
    SSG: 16,13
    Location Call Number Limitation Availability
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