@article{fdi:010070914, title = {{P}aracas dust storms : sources, trajectories and associated meteorological conditions}, author = {{B}riceno-{Z}uluaga, {F}. and {C}astagna, {A}. and {R}utllant, {J}. {A}. and {F}lores-{A}queveque, {V}. and {C}aquineau, {S}andrine and {S}ifeddine, {A}bdelfettah and {V}elazco, {F}. and {G}utierrez, {D}. and {C}ardich, {J}.}, editor = {}, language = {{ENG}}, abstract = {{D}ust storms that develop along the {P}isco-{I}ca desert in {S}outhern {P}eru, locally known as "{P}aracas" winds have ecological, health and economic repercussions. {H}ere we identify dust sources through {MODIS} ({M}oderate {R}esolution {I}maging {S}pectroradiometer) imagery and analyze {HYSPLIT} ({H}ybrid {S}ingle {P}articles {L}agrangian {I}ntegrated {T}rajectory) model trajectories and dispersion patterns, along with concomitant synoptic-scale meteorological conditions from {N}ational {C}enters for {E}nvironmental {P}rediction/{N}ational {C}enter for {A}tmospheric {R}esearch reanalysis ({NCEP}/{NCAR}). {A}dditionally, surface pressure data from the hourly {MET}eorological {A}erodrome {R}eport ({METAR}) at {A}rica (18.5 degrees {S}, 70.3 degrees {W}) and {P}isco (13.7 degrees {S}, 76.2 degrees {W}) were used to calculate {A}longshore (sea-level) {P}ressure {G}radient ({APG}) anomalies during {P}aracas dust storms, their duration and associated wind-speeds and wind directions. {T}his study provides a review on the occurrence and strength of the {P}aracas dust storms as reported in the {P}isco airfield for five-year period and their correspondence with {MODIS} true-color imagery in terms of dust-emission source areas. {O}ur results show that most of the particle fluxes moving into the {I}ca-{P}isco desert area during {P}aracas wind events originate over the coastal zone, where strong winds forced by steep {APG}s develop as the axis of a deep mid-troposphere trough sets in along north-central {C}hile. {D}irect relationships between {P}aracas wind intensity, number of active dust-emission sources and {APG}s are also documented, although the scarcity of simultaneous {METAR}/{MODIS} data for clearly observed {MODIS} dust plumes prevents any significant statistical inference. {S}ynoptic-scale meteorological composites from {NCEP}/{NCAR} reanalysis data show that {P}aracas wind events (steep {APG}s) are mostly associated with the strengthening of anticyclonic conditions in northern {C}hile, that can be attributed to cold air advection associated with the incoming trough. {C}ompared to the {MODIS} images, {HYSPLIT} outputs were able to spatially reproduce trajectories and dust dispersion plumes during the {P}aracas wind storms. {HYSPLIT} trajectories revealed that part of the wind-eroded lithological material can be transported downwind several kilometers along the {P}eruvian coast and also deposited over the nearby coastal ocean, giving support to the presence of an aeolian signal in continental shelf sediments, of great importance for paleoenvironmental studies.}, keywords = {{A}eolian transport ; {HYSPLIT} trajectories ; {D}ust storms ; {S}outhern {P}eru ; {S}ynoptic-scale meteorological patterns ; {PEROU}}, booktitle = {}, journal = {{A}tmospheric {E}nvironment}, volume = {165}, numero = {}, pages = {99--110}, ISSN = {1352-2310}, year = {2017}, DOI = {10.1016/j.atmosenv.2017.06.019}, URL = {https://www.documentation.ird.fr/hor/fdi:010070914}, }