Copyright © 2020, Oxford University PressParker, M. L.Matzeu, G. A.Alston, W. N.Fabian, A. C.Lobban, A.Miniutti, G.Pinto, C.Santos Lleó, M.Schartel, N.Unidad de Excelencia Científica María de Maeztu Centro de Astrobiología del Instituto Nacional de Técnica Aeroespacial y CSIC, MDM-2017-07372021-04-092021-04-092020-08-25Monthly Notices of the Royal Astronomical Society: Letters 498(1): L140-L144(2020)1745-3925https://academic.oup.com/mnrasl/article-abstract/498/1/L140/5896962http://hdl.handle.net/20.500.12666/196This article is published and distributed under the terms of the Oxford University Press, Standard Journals Publication Model (https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model)We present joint NuSTAR and XMM–Newton observations of the bright, variable quasar IRAS 13349+2438. This combined data set shows two clear iron absorption lines at 8 and 9 keV, which are most likely associated with two layers of mildly relativistic blueshifted absorption, with velocities of ∼0.14c and ∼0.27c. We also find strong evidence for a series of Ly α absorption lines at intermediate energies in a stacked XMM–Newton EPIC-pn spectrum, at the same blueshift as the lower velocity iron feature. This is consistent with a scenario where an outflowing wind is radially stratified, so faster, higher ionization material is observed closer to the black hole, and cooler, slower material is seen from streamlines at larger radii.engAccretionAccretion DiscBlack Hole PhysicsGalaxies: activeinfo:eu-repo/semantics/article10.1093/mnrasl/slaa1441745-3933info:eu-repo/semantics/restrictedAccess