@article{fdi:010077977,
  title = {{D}ynamics of rainfall extremes over {I}ndia : a new perspective},
  author = {{S}ooraj, {K}. {P}. and {T}erray, {P}ascal and {S}hilin, {A}. and {M}ujumdar, {M}.},
  editor = {},
  language = {{ENG}},
  abstract = {{A} comprehensive analysis of the role of {I}ndo-{P}akistan arid region ({IPAR}) in modulating the boreal summer heavy extreme rainfall events over monsoon core zone ({MCZ} over {I}ndian subcontinent) at subseasonal to daily time scales is presented. {T}he objective is to bring new perspectives on the dynamics of such rainfall extremes. {T}ime-lagged composite analysis shows the clustering of {M}onsoon {I}ntra-{S}easonal {O}scillation with monsoon rainfall daily extremes. {H}owever, our results additionally bring out the distinct role of surface thermal forcing and moist processes over {IPAR} as another potential and significant precursor, 16-10 days in advance, causing monsoon rainfall daily extremes over {MCZ}. {F}urther analysis reveals that the warming over {IPAR} is initially found in the northern part of the domain, 20-15 days before the rainfall events over {MCZ} and is triggered by subtropical-midlatitude interactions characterized by the intrusion of a midlatitude (i.e., {E}urasian) atmospheric wave train into the {A}sian domain. {O}ur analysis further reveals strong moist static energy ({MSE}) build-up over the {IPAR} 12 days in advance, which is initially dominated by anomalous warming in the lower atmosphere, but with an incremental contribution of low-level specific humidity as we moved forward in time towards the rainfall event. {H}ydrodynamic-longwave radiative teleconnections are the primary mechanism for the persistence of the surface warming and {MSE} buildup over {IPAR} after the initial intrusion of the {E}urasian wave train. {T}he persistent warming over {IPAR} reinforces the land-sea contrast between the {M}iddle {E}ast and western equatorial {I}ndian {O}cean to its south, and this subsequently leads to pressure anomalies and monsoon circulation changes through geostrophic wind adjustment, thus enhancing westerlies over {A}rabian {S}ea. {A}ll these factors lead to the development of a gigantic monsoon trough over central {I}ndia thus causing the rainfall extremes over {MCZ} through the genesis of synoptic vortices.},
  keywords = {{E}urasian wave train ; hydrodynamic-radiative teleconnection ; monsoon core zone ; subtropical-midlatitude interaction ; summer monsoon rainfall ; extremes ; west {A}sian arid regions ; {INDE}},
  booktitle = {},
  journal = {{I}nternational {J}ournal of {C}limatology},
  volume = {40},
  numero = {12},
  pages = {5223--5245},
  ISSN = {0899-8418},
  year = {2020},
  DOI = {10.1002/joc.6516},
  URL = {https://www.documentation.ird.fr/hor/fdi:010077977},
}