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CHOSEN: A synthesis of hydrometeorological data from 30 intensively monitored watersheds across the US
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  • Liang Zhang,
  • Edom Moges,
  • Elizabeth Coda,
  • Tianchi Liu,
  • adam wymore,
  • Zexuan Xu,
  • James Kirchner,
  • Laurel Larsen
Liang Zhang
University of California Berkeley
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Edom Moges
University of California Berkeley
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Elizabeth Coda
University of California Berkeley
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Tianchi Liu
University of California Berkeley
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adam wymore
University of New Hampshire
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Zexuan Xu
Lawrence Berkeley National Laboratory
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James Kirchner
ETH Zurich
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Laurel Larsen
University of California Berkeley
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Abstract

Hydrological analyses and their associated uncertainties are a function of their supporting observational datasets. Publicly available large-sample hydrology datasets covering a range of climates, times, and locations can be used to support inter-watershed comparisons, pattern identification, and watershed regionalization studies. However, most of the large-sample datasets are limited to a series of basic measurements such as precipitation, air temperature, and streamflow. Here we synthesized data from 30 intensively monitored catchments with soil moisture, snowmelt, and other hydrometeorological observations at daily scale across the US. This data synthesis product, CHOSEN (CONUS/Comprehensive Hydrologic Observatory SEnsor Network), includes watersheds from the Long-Term Ecological Research (LTER) and Critical Zone Observatory (CZO) networks, and several other ecological and hydrological observatories. Catchments span diverse climate gradients and encompass multiple biomes and ecosystems. To achieve a consistent and standardized data product, we first implemented data cleaning and control procedures with strict variable naming conventions and unit conversions. Following data quality control, data processing methods, including gap filling by interpolation, linear regression, and climate catalog-based techniques, were implemented to produce alternative level-2 products. The data and metadata were written into self-describing NetCDF files, facilitating ease of access by multiple computer platforms. All python coding scripts, ranging from processing to accessing the NetCDF files, are publicly available, along with a user-friendly tutorial. The standardizations adopted here, and the availability of the data-processing pipeline, will facilitate future additions of new observations to this database. We anticipate that this synthesis will support comparative long-term hydrological studies and contribute to a growing body of open-source research in watershed and ecosystem science.

Peer review status:IN REVISION

01 Oct 2020Submitted to Hydrological Processes
01 Oct 2020Submission Checks Completed
01 Oct 2020Assigned to Editor
03 Oct 2020Reviewer(s) Assigned
03 Nov 2020Review(s) Completed, Editorial Evaluation Pending
16 Nov 2020Editorial Decision: Revise Major
04 Mar 20211st Revision Received
04 Mar 2021Reviewer(s) Assigned
04 Mar 2021Submission Checks Completed
04 Mar 2021Assigned to Editor
16 May 2021Review(s) Completed, Editorial Evaluation Pending
20 May 2021Editorial Decision: Revise Major