i
Strong modulations on the Bay of Bengal monsoon onset vortex by the first northward-propagating intra-seasonal oscillation
-
2016
Source: Clim Dyn 47, 107–115
[PDF-1.23 MB]
Details:
-
Journal Title:Climate Dynamics
-
Personal Author:
-
NOAA Program & Office:
-
Description:Monsoon onset vortex (OV) in the form of tropical cyclone is often observed in the pre-monsoon period and contributes to the subsequent abrupt establishment of summer monsoon over the Bay of Bengal (BoB). It is identified here that all historical OVs occurred during the convection-enhanced phase of the first northward-propagating intra-seasonal oscillation (FNISO). The individual contributions from the four large scale environmental fields associated with the intra-seasonal variations to the cyclone genesis are diagnosed with the aid of the genesis potential index. The significant moistening of mid-level atmosphere, which is embedded in the FNISO convection-enhanced phase, is shown to be the primary factor leading to the cyclone genesis. The water vapor budget analysis is further done to understand the governing process for the mid-level humidity increase. It is clearly seen that the vertical advection process, dominated by the anomalous vertical advection of the mean vertical water vapor gradient, plays the critical role. Hence the OVs are shown to be strongly modulated by FNISOs, both of which are important elements of the complex story of the BoB monsoon onset.
-
Source:Clim Dyn 47, 107–115
-
Document Type:
-
Place as Subject:
-
Rights Information:CC BY
-
Compliance:Submitted
-
Main Document Checksum:urn:sha256:7d4df4290a13c36900e006b1389b4b539099b002b3fefcca9dd039f8c12f8ac1
-
File Type:
Supporting Files
-
No Additional Files
More +
Related Documents
-
Personal Author:Fu, Hongli ;Wu, Xinrong...2016 | Advances in Meteorology,2016: 2170746Description:Extracting multiple-scale observational information is critical for accurately reconstructing the structure of mesoscale circulation systems such as t...Drivers and uncertainties of future global marine primary production in marine ecosystem modelsCitePersonal Author:Laufkötter, C. ;Vogt, M....2015 | Biogeosciences, 12, 6955–6984, 2015Description:Past model studies have projected a global decrease in marine net primary production (NPP) over the 21st century, but these studies focused on the mul...Personal Author:Murakami, Hiroyuki ;Vecchi, Gabriel A....2016 | Journal of Climate, 28(23), 9058-9079Description:A new high-resolution Geophysical Fluid Dynamics Laboratory (GFDL) coupled model [the High-Resolution Forecast-Oriented Low Ocean Resolution (FLOR) mo...Personal Author:Muñoz, Á. G. ;Goddard, L....2016 | Journal of Climate, 29(16), 5915-5934Description:Potential and real predictive skill of the frequency of extreme rainfall in southeastern South America for the December–February season are evaluate...Personal Author:Crawford, Anna ;Wadhams, Peter...2016 | Oceanography 29(2):254–263Description:In August 2010, a 253 km2 ice island calved from the floating glacial tongue of Petermann Glacier in Northwest Greenland. Petermann Ice Island (PII)-B...Personal Author:Jia, Liwei ;Vecchi, Gabriel A....2016 | Journal of Climate, 29(11), 4121-4135Description:This study investigates the roles of radiative forcing, sea surface temperatures (SSTs), and atmospheric and land initial conditions in the summer war...Personal Author:Hiester, J. ;Sergienko, O. V....2016 | J. Geophys. Res. Earth Surf., 121, 497– 510Description:Satellite laser altimetry reveals short timescale changes in Antarctic ice sheet surface elevation that are suggested to be driven by subglacial water...Personal Author:Stern, A. A. ;Adcroft, A....2016 | J. Geophys. Res. Oceans, 121, 5773– 5788Description:Icebergs calved from the Antarctic continent act as moving sources of freshwater while drifting in the Southern Ocean. The lifespan of these icebergs ...Climate variability and extremes, interacting with nitrogen storage, amplify eutrophication riskCitePersonal Author:Lee, Minjin ;Shevliakova, Elena...2016 | Geophys. Res. Lett., 43, 7520– 7528Description:Despite 30 years of basin-wide nutrient-reduction efforts, severe hypoxia continues to be observed in the Chesapeake Bay. Here we demonstrate the cr...Personal Author:Yang, Xiaosong ;Vecchi, G. A....2015 | Bulletin of the American Meteorological Society, 96(12), S25-S28.Description:Over the period Decem-ber 2013–February 2014, there was a pronounced reduction of extratropical storm (ETS) activity over the North Pacific Ocean an...2020 | Journal of Advances in Modeling Earth Systems, 12, e2019MS002043.Description:This contribution describes the ocean biogeochemical component of the Geophysical Fluid Dynamics Laboratory's Earth System Model 4.1 (GFDL‐ESM4.1), ...2020 | Journal of Advances in Modeling Earth Systems, 12, e2019MS002032.Description:We describe the baseline model configuration and simulation characteristics of the Geophysical Fluid Dynamics Laboratory (GFDL)'s Atmosphere Model ver...Personal Author:Ilotoviz, Eyal ;Khain, Alexander P....2016 | Journal of the Atmospheric Sciences, 73(1), 109-144Description:A midlatitude hail storm was simulated using a new version of the spectral bin microphysics Hebrew University Cloud Model (HUCM) with a detailed descr...Personal Author:Banerjee, Tirtha ;Li, Dan...2016 | Journal of the Atmospheric Sciences, 73(1), 145-166Description:A spectral budget model is developed to describe the scaling behavior of the longitudinal turbulent velocity variance with the stability parameter and...2020 | Geophysical Research Letters 47(5): e2019GL086765, 2020Description:We examine links between tropical Pacific mean state biases and El Niño/Southern Oscillation forecast skill, using model‐analog hindcasts of sea su...2021 | Journal of Climate, 34(6), 2107-2126.Description:The current GFDL seasonal prediction system achieved retrospective sea ice extent (SIE) skill without direct sea ice data assimilation. Here we develo...Personal Author:Zhang, Liping ;Delworth, Thomas L.2016 | J. Geophys. Res. Oceans, 121, 5825– 5846Description:The impact of Antarctic bottom water (AABW) formation on the Weddell Gyre and its northward propagation characteristics are studied using a 4000 year ...Personal Author:Kam, Jonghun ;Knutson, Thomas R....2015 | Bulletin of the American Meteorological Society, 96(12), S61-S65.Description:HadCRUT4v3 observed surface tem-perature data (Morice et al. 2012) indicate that during 2014, record annual mean warm anomalies occurred in regions of...Personal Author:Williams, Dean N. ;Balaji, V....2016 | Bulletin of the American Meteorological Society, 97(5), 803-816.Description:Working across U.S. federal agencies, international agencies, and multiple worldwide data centers, and spanning seven international network organizati...Personal Author:Mellor, George2016 | J. Geophys. Res. Oceans, 121, 4474– 4486Description:The classic theory for the interaction of surface gravity waves and the general ocean circulation entails the so-called wave radiation stress terms in...
More +
You May Also Like
Checkout today's featured content at repository.library.noaa.gov