TY - JOUR
T1 - Transit Time Estimation in Catchments
T2 - Recent Developments and Future Directions
AU - Benettin, Paolo
AU - Rodriguez, Nicolas B.
AU - Sprenger, Matthias
AU - Kim, Minseok
AU - Klaus, Julian
AU - Harman, Ciaran J.
AU - van der Velde, Ype
AU - Hrachowitz, Markus
AU - Botter, Gianluca
AU - More Authors, null
PY - 2022
Y1 - 2022
N2 - Water transit time is now a standard measure in catchment hydrological and ecohydrological research. The last comprehensive review of transit time modeling approaches was published 15+ years ago. But since then the field has largely expanded with new data, theory and applications. Here, we review these new developments with focus on water-age-balance approaches and data-based approaches. We discuss and compare methods including StorAge-Selection functions, well/partially mixed compartments, water age tracking through spatially distributed models, direct transit time estimates from controlled experiments, young water fractions, and ensemble hydrograph separation. We unify some of the heterogeneity in the literature that has crept in with these many new approaches, in an attempt to clarify the key differences and similarities among them. Finally, we point to open questions in transit time research, including what we still need from theory, models, field work, and community practice.
AB - Water transit time is now a standard measure in catchment hydrological and ecohydrological research. The last comprehensive review of transit time modeling approaches was published 15+ years ago. But since then the field has largely expanded with new data, theory and applications. Here, we review these new developments with focus on water-age-balance approaches and data-based approaches. We discuss and compare methods including StorAge-Selection functions, well/partially mixed compartments, water age tracking through spatially distributed models, direct transit time estimates from controlled experiments, young water fractions, and ensemble hydrograph separation. We unify some of the heterogeneity in the literature that has crept in with these many new approaches, in an attempt to clarify the key differences and similarities among them. Finally, we point to open questions in transit time research, including what we still need from theory, models, field work, and community practice.
KW - catchment
KW - review
KW - tracer
KW - transit time
KW - transport
KW - water age
UR - http://www.scopus.com/inward/record.url?scp=85142917130&partnerID=8YFLogxK
U2 - 10.1029/2022WR033096
DO - 10.1029/2022WR033096
M3 - Review article
AN - SCOPUS:85142917130
SN - 0043-1397
VL - 58
JO - Water Resources Research
JF - Water Resources Research
IS - 11
M1 - e2022WR033096
ER -