@article{fdi:010095863, title = {{A}nalysis of cosmic ray-induced neutron spectra recorded during {PIRATA} oceanographic cruises}, author = {{H}ubert, {G}. and {H}erbert, {G}a{\¨e}lle and {T}ilhac, {A}. and {R}ey, {R}. and {B}ourl{\`e}s, {B}ernard}, editor = {}, language = {{ENG}}, abstract = {{T}his paper presents the operation of a neutron spectrometer onboard the {R}/{V} {L}a {T}halassa during the {PIRATA} ({P}rediction and {R}esearch {M}oored {A}rray in the {T}ropical {A}tlantic) oceanographic cruises in the equatorial {A}tlantic. {T}he cruises took place from {F}ebruary to {A}pril in 2019 and 2020. {W}e analyze cosmic ray-induced neutrons measured by the spectrometer, accounting for various physical factors influencing neutron detection, including environmental and systematic effects primarily driven by atmospheric pressure and water vapor content variations. {A}dditionally, the study incorporates the influence of short-term fluctuations in primary cosmic rays to investigate the geomagnetic cutoff rigidity dependence. {D}etailed analyses of count rates, fluxes, and neutron spectra are provided, facilitating cross-comparison of radiation fields. {T}he mobile neutron spectrometer enables latitude-dependent surveys, assessing the impact of geomagnetic cutoff rigidity on neutron spectra. {E}quivalent 3{NM}64 count rates were derived from {PIRATA} measurements and compared with previous results.}, keywords = {{C}osmic ray ; {A}tmospheric radiation environment ; {N}eutron spectrometer ; {PIRATA} oceanographic cruises ; {ATLANTIQUE} ; {ZONE} {TROPICALE}}, booktitle = {}, journal = {{J}ournal of {A}tmospheric and {S}olar-{T}errestrial {P}hysics}, volume = {278}, numero = {}, pages = {106690 [12 p.]}, ISSN = {1364-6826}, year = {2026}, DOI = {10.1016/j.jastp.2025.106690}, URL = {https://www.documentation.ird.fr/hor/fdi:010095863}, }