@article{fdi:010063889, title = {{O}bserved year-to-year sea surface salinity variability in the {B}ay of {B}engal during the 2009-2014 period [plus erratum]}, author = {{C}haitanya, {A}. {V}. {S}. and {D}urand, {F}abien and {M}athew, {S}. and {G}opalakrishna, {V}. {V}. and {P}apa, {F}abrice and {L}engaigne, {M}atthieu and {V}ialard, {J}{\'e}r{\^o}me and {K}ranthikumar, {C}. and {V}enkatesan, {R}.}, editor = {}, language = {{ENG}}, abstract = {{T}he present study describes the observed sea surface salinity ({SSS}) interannual variability in the {B}ay of {B}engal over the 2009-2014 period. {I}t is based on an original compilation of all available in situ {SSS} observations in that region, assembled in a 2{A} degrees-resolution trimonthly gridded field. {W}e find that year-to-year {SSS} variability is particularly strong in the north-eastern part of the bay. {O}ver recent years, this variability takes the form of two successive and opposite phases: a saltening phase from mid-2009 to late 2010, immediately followed by a freshening phase from late 2010 to late 2011. {T}he typical magnitude of each anomalous spell is about one in the practical salinity scale, making this area one of the most variable of the tropical oceans at interannual timescales. {A} simple mixed-layer salt budget indicates that year-to-year large-scale {SSS} variability in the {N}orthern {B}ay of {B}engal is primarily driven by freshwater flux variability with a correlation of 0.68, with rather independent contributions from precipitation and river run-off. {T}he oceanic surface circulation variability contributes less systematically to the large-scale {SSS} evolution in the {N}orthern {B}ay of {B}engal over the entire record with a correlation of 0.13, despite a strong contribution at times, in particular, during the 2011 positive {I}ndian {O}cean {D}ipole ({IOD}) freshening.}, keywords = {{SSS} ; {B}ay of {B}engal ; {A}rgo ; {G}anges ; {B}rahmaputra ; {IOD} ; {GOLFE} {DU} {BENGALE} ; {OCEAN} {INDIEN}}, booktitle = {}, journal = {{O}cean {D}ynamics}, volume = {65}, numero = {2}, pages = {173--186 + erratum vol.65, no 3, p. 467}, ISSN = {1616-7341}, year = {2015}, DOI = {10.1007/s10236-014-0802-x}, URL = {https://www.documentation.ird.fr/hor/fdi:010063889}, }