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DTSTART;TZID=America/New_York:20250716T130000
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UID:8652-1752670800-1752674400@permafrostnet.ca
SUMMARY:Seminar - 16 July - Characterizing carbon and water fluxes in the arctic boreal forest using plant hydraulics parameterization in the presence and absence of permafrost: a modelling approach.
DESCRIPTION:Date: Wednesday 16th July 2025Time: 1pm Eastern Time / 11am Mountain Time \n\n\n\nMuhammad Umair will be presenting Characterizing carbon and water fluxes in the arctic boreal forest using plant hydraulics parameterization in the presence and absence of permafrost: a modelling approach. \n\n\n\nLocation: Zoom (details are posted in our Teams site). \n\n\n\nStomatal conductance in terrestrial biosphere models (TBMs) plays a critical role in accurately simulating carbon and water fluxes\, and for evaluating the impacts of climate change on land surface-atmosphere interactions. Climate change impacts such as more frequent heat waves and drought conditions challenge TBMs and need to be investigated thoroughly\, especially in the rapidly changing arctic boreal forest. Terrestrial biosphere models such as the Canadian Land Surface Scheme Including Biogeochemical Cycles (CLASSIC) often employ empirical formulations that link soil moisture to stomatal conductance. These soil moisture-based empirical approaches typically perform poorly under drought conditions. \n\n\n\nOur study implemented an explicit plant hydraulics parameterization in CLASSIC to connect the soil-plant-atmosphere continuum through plant hydraulic traits\, i.e.\, stomatal optimization based on xylem hydraulics (SOX)\, resulting in CLASSICSOX. Model performance was evaluated at eight arctic boreal forest sites; three are permafrost-free\, four are in the discontinuous permafrost zone\, and one is in the continuous permafrost zone. Compared to the default CLASSIC\, simulated gross primary production (GPP) improved at all eight sites with CLASSICSOX. Drought conditions at the eight sites were identified using the Palmer Drought Severity Index\, and the results showed improvement in simulated GPP during drought conditions. Overall\, the SOX parameterization achieved improved results compared to CLASSIC by-default at all sites\, specifically for the sites located at the continuous and discontinuous permafrost zone. \n\n\n\nZoom details for all our seminars will be posted in our Teams site.
URL:https://permafrostnet.ca/event/seminar-16-july-characterizing-carbon-and-water-fluxes-in-the-arctic-boreal-forest-using-plant-hydraulics-parameterization-in-the-presence-and-absence-of-permafrost-a-modelling-approach/
LOCATION:Zoom
ATTACH;FMTTYPE=image/jpeg:https://permafrostnet.ca/wp-content/uploads/2025/06/Adeleh-fieldwork.jpg
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DTSTART;TZID=America/New_York:20250921T080000
DTEND;TZID=America/New_York:20250924T170000
DTSTAMP:20260524T123527
CREATED:20240911T175814Z
LAST-MODIFIED:20260524T163047Z
UID:7567-1758441600-1758733200@permafrostnet.ca
SUMMARY:GeoManitoba 2025
DESCRIPTION:The deadline for submission of abstracts is December 18\, 2024. \n\n\n\nThe Canadian Geotechnical Society (CGS) and the Canadian Permafrost Association (CPA) are hosting GeoManitoba 2025\, the 78th Canadian Geotechnical Conference. \n\n\n\n​ \n\n\n\nThe theme for GeoManitoba 2025 is ‘Stronger Together’. This theme was selected to reflect the ever-increasing need for collaboration between disciplines in our work. It also reflects the need for tolerance and understanding in our increasingly multi-cultural society. Our profession continues to be at the forefront of many societal challenges ranging from aging infrastructure to climate change\, a collaborative spirit will be needed to meet these challenges head-on.
URL:https://permafrostnet.ca/event/geomanitoba-2025/
ATTACH;FMTTYPE=image/png:https://permafrostnet.ca/wp-content/uploads/2024/09/GeoManitoba2025_Final-01.png
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DTSTART;TZID=America/New_York:20250924T080000
DTEND;TZID=America/New_York:20250925T170000
DTSTAMP:20260524T123527
CREATED:20250123T181945Z
LAST-MODIFIED:20260524T163205Z
UID:8289-1758700800-1758819600@permafrostnet.ca
SUMMARY:IGC Regular Members meeting
DESCRIPTION:
URL:https://permafrostnet.ca/event/igc-regular-members-meeting-4/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20251203T080000
DTEND;TZID=America/New_York:20251204T170000
DTSTAMP:20260524T123527
CREATED:20250123T182310Z
LAST-MODIFIED:20260524T163205Z
UID:8288-1764748800-1764867600@permafrostnet.ca
SUMMARY:IGC Regular Members meeting
DESCRIPTION:
URL:https://permafrostnet.ca/event/igc-regular-members-meeting-5/
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BEGIN:VEVENT
DTSTART;TZID=America/New_York:20260304T080000
DTEND;TZID=America/New_York:20260305T170000
DTSTAMP:20260524T123527
CREATED:20250123T182535Z
LAST-MODIFIED:20260524T163205Z
UID:8287-1772611200-1772730000@permafrostnet.ca
SUMMARY:IGC Regular Members meeting
DESCRIPTION:
URL:https://permafrostnet.ca/event/igc-regular-members-meeting-6/
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