Intercomparison of Multiple Hydroclimatic Datasets across the Lower Nelson River Basin, Manitoba, Canada

Simple item page
dc.contributor.authorLilhare, Rajtantra
dc.contributor.authorDéry, Stephen J.
dc.contributor.authorPokorny, Scott
dc.contributor.authorStadnyk, Tricia
dc.contributor.authorKoenig, Kristina
dc.date.accessioned2020-08-18T05:12:15Z
dc.date.available2020-08-18T05:12:15Z
dc.date.issued2019-08-14
dc.date.submitted2020-08-18T05:12:15Zen_US
dc.description.abstractThis study evaluates the 1981–2010 spatiotemporal differences in six available climate datasets (daily total precipitation and mean air temperature) over the Lower Nelson River Basin (LNRB) in ten of its sub-watersheds at seasonal and annual time scales. We find that the Australian National University spline interpolation (ANUSPLIN), and inverse distance weighted (IDW) interpolated observations from 14 Environment and Climate Change Canada (ECCC) meteorological stations show dry biases, whereas reanalysis products tend to overestimate precipitation across most of the basin. All datasets exhibit prominent disagreement in precipitation trends whereby the European Centre for Medium-Range Weather Forecasts (ECMWF) interim reanalysis (ERAInterim) and European Union Water and Global Change (WATCH) Forcing Data ERA-Interim (WFDEI) show exceptional wetting trends, while the IDW and ANUSPLIN data manifest drying trends. Mean air temperature trends generally agree across most of the datasets; however, the North American Regional Reanalysis (NARR) and IDW show stronger warming relative to other datasets. Overall, analyses of the different climate datasets and their ensemble reveal that the choice of input dataset plays a crucial role in the accurate estimation of historical climatic conditions, particularly when assessing trends, for the LNRB. Using the ensemble has the distinct advantage of preserving the unique strengths of all datasets and affords the opportunity to estimate the uncertainty for hydrologic modelling and climate change impact studies.en_US
dc.description.sponsorshipNatural Sciences and Engineering Research Council of Canada [grant number NSERC CRD 44425 RC15-3100] and Manitoba Hydroen_US
dc.identifier.citationLilhare, R., Déry, S. J., Pokorny, S., Stadnyk, T. A., Koenig, K. A., 2019. Intercomparison of Multiple Hydroclimatic Datasets across the Lower Nelson River Basin, Manitoba, Canada. Atmos Ocean. 57:4, 262-278. https://doi.org/10.1080/07055900.2019.1638226.en_US
dc.identifier.doi10.1080/07055900.2019.1638226
dc.identifier.issn0705-5900
dc.identifier.issn1480-9214
dc.identifier.urihttp://hdl.handle.net/1993/34872
dc.language.isoengen_US
dc.publisherTaylor & Francis Groupen_US
dc.rightsopen accessen_US
dc.subjectgridded climate dataen_US
dc.subjectintercomparisonen_US
dc.subjecttrend analysisen_US
dc.subjectLower Nelson River Basinen_US
dc.subjectManitobaen_US
dc.titleIntercomparison of Multiple Hydroclimatic Datasets across the Lower Nelson River Basin, Manitoba, Canadaen_US
dc.typeArticleen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
lilhare_rajtantra_2019.pdf
Size:
2.96 MB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed to upon submission
Description:
Download
Collections
Research Documents and Reports