Niwot Ridge: Carbon Dioxide Advection Study (NIWOT02)
This document is a standard product of
which gives an overview of the measurements taken using the
Integrated Surface Flux Facility (ISFF)
and conditions during the Niwot02 field experiment. This document can be
obtained in hard copy from RTF upon request.
The ISFF portion of this study is being operated as an internal development
program in support of the NCAR Biogeosciences Initiative, with some support
from the NCAR Director's opportunity fund. ISFF is constructing two new
instrument systems for this program:
Both systems will be deployed only within the forest canopy.
- A TRAM system which will carry two sensor packages along a fixed cable
to sample the horizontal variation of CO2 advection along a 200m transect
with 1m spatial resolution. The variables to be measured are 3-component
wind vector, temperature, humidity, and CO2.
- Two Hydra systems to sample both the horizontal and vertical variation
of CO2 concentration. This will augment two similar systems already deployed
as part of the CU Flux Facility.
See the MMM WWW page
for complete information about this program.
At the CU Flux Facility within the CU Mountain Research Station, about 8? miles
north of Nederland, Colorado. The fastest route from NCAR appears to be:
(all distances approximate)
- North on 47th to Jay Rd (1 mi)
- West on Jay to 28th (1 mi)
- North on 28th to Lee Hill (2 mi)
- West on Lee Hill to Lefthand Canyon (9 mi)
- West on Lefthand Canyon through Ward to Hwy 72 (20 mi)
- South on Hwy 72 to "Mountain Research Station" sign (5 mi)
- West on FR298 ~2 mi, then right at fork into MRS.
- The site is ~2mi up the dirt road to the north of the buildings which
is gated by a combination lock. DO NOT DRIVE UP on Thurdays and Fridays.
Ask a Niwot participant for detailed directions beyond the buildings.
The program is currently scheduled to run from 1 Aug - 15 Sept, 2002.
Aug 14 NCAR stations 1-3 (west, central, east) up and most sensors
operating, except for CO2 systems.
Sep 3 CO2 hydra system operational.
NCAR ISFF sensors are to be installed at three sites, roughly aligned with
the existing USGS and CU towers:
(These are approximate, based on my handheld GPS which appears to have large
||40° 2' 2.8"
||105° 32' 44.9"
||40° 2' 2.2"
||105° 32' 52.7"
||40° 2' 0.5"
||105° 32' 59.0"
The layout of the sensors is shown
(and PostScript version).
The hydra system is described in a separate report.
Niwot Data Access
The NCAR Niwot data are available for download in the following forms:
Niwot Field Logbook
A computer-readable field logbook
of comments noted by NCAR and other personnel is available in read-only
html form and updated every day.
MANY PEOPLE MISS THIS IMPORTANT SOURCE OF PROJECT INFORMATION
-- PLEASE LOOK HERE!
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NCAR Research Technology Facility