@article{fdi:010062024, title = {{S}now cover sensitivity to black carbon deposition in the {H}imalayas : from atmospheric and ice core measurements to regional climate simulations}, author = {{M}enegoz, {M}. and {K}rinner, {G}. and {B}alkanski, {Y}. and {B}oucher, {O}. and {C}ozic, {A}. and {L}im, {S}. and {G}inot, {P}atrick and {L}aj, {P}. and {G}allee, {H}. and {W}agnon, {P}atrick and {M}arinoni, {A}. and {J}acobi, {H}. {W}.}, editor = {}, language = {{ENG}}, abstract = {{W}e applied a climate-chemistry global model to evaluate the impact of black carbon ({BC}) deposition on the {H}imalayan snow cover from 1998 to 2008. {U}sing a stretched grid with a resolution of 50 km over this complex topography, the model reproduces reasonably well the remotely sensed observations of the snow cover duration. {S}imilar to observations, modelled atmospheric {BC} concentrations in the central {H}imalayas reach a minimum during the monsoon and a maximum during the post-and pre-monsoon periods. {C}omparing the simulated {BC} concentrations in the snow with observations is more challenging because of their high spatial variability and complex vertical distribution. {W}e simulated spring {BC} concentrations in surface snow varying from tens to hundreds of mu g kg(-1), higher by one to two orders of magnitude than those observed in ice cores extracted from central {H}imalayan glaciers at high elevations (>6000ma.s.l.), but typical for seasonal snow cover sampled in middle elevation regions (<6000ma.s.l.). {I}n these areas, we estimate that both wet and dry {BC} depositions affect the {H}imalayan snow cover reducing its annual duration by 1 to 8 days. {I}n our simulations, the effect of anthropogenic {BC} deposition on snow is quite low over the {T}ibetan {P}lateau because this area is only sparsely snow covered. {H}owever, the impact becomes larger along the entire {H}indu-{K}ush, {K}arakorum and {H}imalayan mountain ranges. {I}n these regions, {BC} in snow induces an increase of the net short-wave radiation at the surface with an annual mean of 1 to 3{W}m(-2) leading to a localised warming between 0.05 and 0.3 degrees {C}.}, keywords = {{HIMALAYA} ; {INDE} ; {NEPAL} ; {TIBET} ; {AFGHANISTAN} ; {PAKISTAN}}, booktitle = {}, journal = {{A}tmospheric {C}hemistry and {P}hysics}, volume = {14}, numero = {8}, pages = {4237--4249}, ISSN = {1680-7316}, year = {2014}, DOI = {10.5194/acp-14-4237-2014}, URL = {https://www.documentation.ird.fr/hor/fdi:010062024}, }