<font color="#333333"><font face="Open sans, Helvetica Neue, Helvetica, Arial, sans-serif"><font style="font-size:10pt"><font size="2"><strong>Understanding the volcanic impact on stratospheric water vapour and the hydrological cycle</strong></font></font></font></font>

<font color="#000000"><font face="Open sans, Helvetica Neue, Helvetica, Arial, sans-serif"><font style="font-size:10pt"><font size="2">In total volcanic eruptions lead to a cooling of the earth’s surface due to scattering of solar radiation back to space. However the concentration of the greenhouse gas water vapour in the stratosphere also increases in consequence of the eruption event and the presence of volcanic aerosols in the lower stratosphere.&nbsp;</font></font></font><font face="Open sans, Helvetica Neue, Helvetica, Arial, sans-serif"><font style="font-size:10pt"><font size="2">The increased stratospheric water vapour concentrations counteract the general cooling and potentially lead to a slight positive forcing after the aerosols have fallen out. Additionally stratospheric chemistry is impacted by the increased humidity content in the otherwise relatively dry stratosphere. </font></font></font></font>

<font color="#000000"><span style="font-variant:normal"><font face="Open sans, Helvetica Neue, Helvetica, Arial, sans-serif"><font style="font-size:10pt"><font size="2"><span style="font-style:normal"><span style="font-weight:normal">I am investigating the changes in stratospheric water vapour after volcanic eruptions using </span></span></font></font></font></span><span style="font-variant:normal"><font face="Open sans, Helvetica Neue, Helvetica, Arial, sans-serif"><font style="font-size:10pt"><font size="2"><span style="font-style:normal"><span style="font-weight:normal">a suite of volcanically perturbed 100-member-ensemble simulations of the </span></span></font></font></font></span><span style="font-variant:normal"><font face="Open sans, Helvetica Neue, Helvetica, Arial, sans-serif"><font style="font-size:10pt"><font size="2"><span style="font-style:normal"><span style="font-weight:normal">coupled climate model </span></span></font></font></font></span><span style="font-variant:normal"><font face="Open sans, Helvetica Neue, Helvetica, Arial, sans-serif"><font style="font-size:10pt"><font size="2"><span style="font-style:normal"><span style="font-weight:normal">MPI-ESM1.2-LR. </span></span></font></font></font></span></font><font color="#000000"><span style="font-variant:normal"><font face="Open sans, Helvetica Neue, Helvetica, Arial, sans-serif"><font style="font-size:10pt"><font size="2"><span style="font-style:normal"><span style="font-weight:normal">Topics I am interested in include the detection threshold, the predictability of the response, as well as the actual radiative impact of the stratospheric water vapour attributable to the influence of volcanic eruptions.</span></span></font></font></font></span></font> <font color="#000000" face="Open sans, Helvetica Neue, Helvetica, Arial, sans-serif" size="2">&nbsp;</font>

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