Subsurface Stormflow: A well-recognized but still challenging process in catchment hydrology research

次表层暴雨径流（SSF）是一种重要的产流过程。自20世纪70年代以来，调查地下风暴流生成的研究显著增加。尽管这些研究成果在众多的出版物，然而，地下暴雨径流仍然是一个具有挑战性的流域水文产流过程。目前还不清楚哪些因素主要控制地下暴雨流量的时间和空间变异性，以及如何在径流模型中将其参数化。为了填补这一研究空白，科学网络，地下风暴流。将启动一项公认的水文学研究，讨论当前有关以下问题：1）SSF一级控制的检测，2）地下径流模型中地下暴雨流的参数化，3）计算出的地下暴雨流的校准和验证。该网络由Sophie Bachmair、Theresa Blume、Katja Heller、Luisa Hopp、Ute Wollschläger、托马斯Graeff、奥利弗Gronz、Andreas Hartmann、Bernhard Kohl、Christian Reinhardt-Imjela、Martin Reiss、Michael Rinderer和Peter Chifflard（PI）组成。它们将共同批判性地反映上述当前问题，并将确定研究缺陷，作为未来研究项目的基础，该项目将通过建立一个向德国研究基金会提出的研究单位来实现。该网络的工作计划将在六个研讨会上进行，每个研讨会将持续3天。讲习班将以解决问题的主持会议的形式组织，在这些会议上，将在单独的小组中作出决定，然后在整个联合小组中提出、讨论和记录。讨论的结果将导致提出假设，作为拟议项目提案的基础。在前四个研讨会期间，将讨论以下主题：1）地下风暴流：在哪里？什么时候？为什么？为什么？2)一阶控制的检测。3)（Pedo-）水文模型概念。4)校准和验证方法。杰出的科学家Nicola Fohrer、Ilja货车Meerveld、Doerthe Tetzlaff、AxelBronstert、Olaf Kolditz、Gunnar Lischeid、Brian McGlynn和Markus Weiler将积极参加前四次研讨会，并同意通过提出基本问题和领导具体讨论，为网络做出重要贡献。在第五次和第六次研讨会上，将拟定并最后确定提案草案。六个讲习班将在成员的研究所（马尔堡大学、特里尔、德累斯顿、达勒姆（美国）、莱比锡UFZ和因斯布鲁克BfW）举办，包括实地考察SSF生成的实验集水区。该网络将与Markus Casper，Jan Fleckenstein，Arno Kleber，Gerhard Markart，Frido Reinstorf，Hans-Jürgen Vogel，Harald Zeppund Erwin Zehe密切合作。

Subsurface stormflow (SSF) is a well-recognized and important runoff generation process in mountainous catchments in humid climates. Since the 1970s research studies which investigate the generation of subsurface stormflow have increased significantly. Although these studies resulted in numerous publications, nevertheless, subsurface stormflow is still a challenging runoff generation process in catchment hydrology. It is still unclear which factors are primarily controlling the temporal and spatial variability of subsurface stormflow and how this can be parameterized in rainfall-runoff models. To fill this research gap the scientific network, Subsurface Stormflow. A well-recognized drology research, will be initiated to discuss current issues concerning the 1) detection of firstorder controls of SSF, 2) the parameterization of subsurface stormflow in rainfall-runoff models and 3) the calibration and validation of the calculated subsurface stormflow. The network consists of Sophie Bachmair, Theresa Blume, Katja Heller, Luisa Hopp, Ute Wollschläger, Thomas Graeff, Oliver Gronz, Andreas Hartmann, Bernhard Kohl, Christian Reinhardt-Imjela, Martin Reiss, Michael Rinderer and Peter Chifflard (PI). Together they will critically reflect above-mentioned current issues and will define research deficits as basis for a future research project which will be realized by the establishment of a research unit proposed to the German Research Foundation. The work program of the network will be performed in six workshops, each will last 3 days. Workshops will be organized as problem-solving moderated meetings, where decisions will be made in separate small groups and presented, discussed and documented in the entire joint group afterwards. The results of the discussions will lead to the formulation of hypotheses as the basis for the intended project proposal. During the first four workshops the following topics will be discussed: 1) Subsurface Stormflow: Where? When? Why? 2) Detection of first-order controls. 3) (Pedo-) Hydrological model concepts. 4) Calibration and validation approaches. The outstanding scientists Nicola Fohrer, Ilja van Meerveld, Doerthe Tetzlaff, AxelBronstert, Olaf Kolditz, Gunnar Lischeid, Brian McGlynn and Markus Weiler will actively participate at the first four workshops and agreed to give essential contributions to the network by raising fundamental questions and leading specific discussions. In the fifth and the sixth workshop the draft proposal will be created and finalized. The six workshops will be organized at the institutes of the members (Univ. Marburg, Trier, Dresden, Durham (USA), UFZ Leipzig and BfW Innsbruck) including field trips to experimental catchments where SSF generation is well investigated. The network will have close cooperation with Markus Casper, Jan Fleckenstein, Arno Kleber, Gerhard Markart, Frido Reinstorf, Hans-Jürgen Vogel, Harald Zeppund Erwin Zehe.