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8 results for “soddie”
Soil moisture and snowdepth measurements in the Black Sand experiment for East Knoll, Audubon, Lefty, Soddie and Trough, 2018 - 2024.
The purpose of the Black Sand experiment is to measure treatment effects on date of snowmelt on Niwot Ridge. Five sites with paired plots (treatment and control) were implemented across Niwot as part of the extended summer research program in order to understand the effects of earlier snowmelt. This dataset contains measurements of snowdepth throughout the melt season, manual measurements of volumetric water content and temperature data as an indication of snowmelt timing.
Atmospheric ozone data from Soddie, 2005 - 2017.
This is a summary of hourly ozone concentrations measured at a height of ~2.5 on a tower in the Soddie meadow. The focus was on the winter, but both the sampling frequency and the length of sampling during a year varied.
Snowmelt lysimeter chemistry data from Soddie, Subnivean, Saddle and TB site, 1993 - 2013.
Snowmelt lysimeters were located at the soddie and subnivean sites on Niwot Ridge from 1993 to 2013, with the larger array located at the soddie site. The soddie lysimeter array is a collection of 105 snowmelt lysimeters that collect discharge measurements at the base of the snowpack. Each lysimeter is a polyethylene pan with 22 cm high vertical walls and 47 cm by 39.5 cm in horizontal extent resulting in a footprint area of ~1,850 cm2. The height of the lysimeter walls prevent both the loss of water out of the lysimeters and the influx of water from saturated zones along the snow-soil interface [Kattelmann, 2000]. Many lysimeters were functional at the soddie site during spring snowmelt (April through July) for water years 1993 through 2013. The 1998 water year had only 36 lysimeters installed. From 1999 through 2001, the array was organized as a two meter grid nested within a four meter grid. In the 2002 water year, 15 of lysimeters on the perimeter were relocated to increase the density of the inner grid. Lysimeters were moved from locations of low snow accumulation on the eastern edge and a region that collects debris during melt on the western edge. By 2010 the number of snowmelt lysimeters at the soddie was reduced to 6. Meltwater collected by the lysimeters flowed to an underground laboratory through flexible PVC piping into Rainwise Rainew Tipping Bucket Rain Gauges. 250ml sample bottles were placed above the tipping buckets at some locations to collect snowmelt from the lysimeters for chemical analysis. Samples were collected once to twice daily depending on snowmelt rates. Upon sample collection some of the snowmelt sample collected in the 250ml bottle was poured off into a 30ml glass bottle for oxygen isotope analysis. Snowmelt samples were collected and analyzed for cations and anions at the Mountain Research Station's Kiowa Laboratory previously, and INSTAAR's Arikaree lab currently.
Stream water chemistry data for Soddie stream, 1999-2013.
This is a summary of major ion concentrations for stream water samples collected at the outflow of the Soddie stream.
Con-mod soil moisture data in the Black Sand experiment plots for East Knoll, Audubon, Lefty, Soddie and Trough, 2019 - ongoing.
In the alpine tundra, shrubs modify wind distribution of snow, increasing snowpack on the leeward side of shrubs, and they provide shading, which modifies temperatures. In order to mimic these abiotic effect of shrubs, structures called connectivity modifiers, hereafter referred to as con-mods, were deployed in Black Band experiment plots in September 2018. Briefly, the Black Sand experiment was initiated in May 2018 to measure the effects of an extended growing season, by initiating earlier snow melt through the application of black sand, on plants and biogeochemistry. Together, this experimental framework allows us to ask how biotic effects influence climate exposure and ecological responsiveness.
Con-mod species composition in the Black Sand experiment for East Knoll, Audubon, Lefty, Soddie and Trough, 2019 - ongoing.
In the alpine tundra, shrubs modify wind distribution of snow, increasing snowpack on the leeward side of shrubs, and they provide shading, which modifies temperatures. In order to mimic these abiotic effect of shrubs, structures called connectivity modifiers, hereafter referred to as con-mods, were deployed in Black Band experiment plots in September 2018. Briefly, the Black Sand experiment was initiated in May 2018 to measure the effects of an extended growing season, by initiating earlier snow melt through the application of black sand, on plants and biogeochemistry. Together, this experimental framework allows us to ask how biotic effects influence climate exposure and ecological responsiveness.
Con-mod soil temperature data in the Black Sand experiment control plots for East Knoll, Audubon, Lefty, Soddie and Trough, 2019 - ongoing.
In the alpine tundra, shrubs modify wind distribution of snow, increasing snowpack on the leeward side of shrubs, and they provide shading, which modifies temperatures. In order to mimic these abiotic effect of shrubs, structures called connectivity modifiers, hereafter referred to as con-mods, were deployed in Black Band experiment plots in September 2018. Briefly, the Black Sand experiment was initiated in May 2018 to measure the effects of an extended growing season, by initiating earlier snow melt through the application of black sand, on plants and biogeochemistry. Together, this experimental framework allows us to ask how biotic effects influence climate exposure and ecological responsiveness.
Snowmelt lysimeter data from Soddie site, 1998-2003
The lysimeter array is a collection of 105 snowmelt lysimeters that collect discharge measurements at the base of the snowpack. Each lysimeter is a polyethylene pan with 22 cm high vertical walls and 47 cm by 39.5 cm in horizontal extent resulting in a footprint area of ~1,850 cm2. The height of the lysimeter walls prevent both the loss of water out of the lysimeters and the influx of water from saturated zones along the snow-soil interface [Kattelmann, 2000]. This location collected data during spring snowmelt (April through July) for water years 1998 through 2003. From 1998 through 2001, the array was organized as a two meter grid nested within a four meter grid. The 1998 water year had only 36 lysimeters installed. In the 2002 water year, 15 of lysimeters on the perimeter were relocated to increase the density of the inner grid. Lysimeters were moved from locations of low snow accumulation on the eastern edge and a region that collects debris during melt on the western edge. Meltwater collected by the lysimeters flowed to an underground laboratory through flexible PVC piping into Rainwise Rainew Tipping Bucket Rain Gauges. The cumulative number of tips were recorded by a Campbell Scientific CR1O data logger at one hour intervals summed to daily totals for this dataset. The precision of outflow is approximately 11 ml (~0.06 mm given the footprint of the lysimeter). This dataset includes the coordinates for each lysimeter of the Soddie lysimeter array. Coordinates are in UTM projection, zone 13N, datum NAD83.
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