Atmospheric carbon dioxide (CO2) and methane (CH4) come from a variety of natural and anthropogenic sources and have a powerful global warming impact. Understanding the magnitude and distribution of these emissions spatially and temporally is critical to evaluating present and future climate impacts. Two trace molecules are often employed to investigate the relative…
The Picarro G2301 gas concentration analyzer provides simultaneous, precise measurement of carbon dioxide (CO2), methane (CH4) at parts-per-billion (ppb) and water (H2O) vapor at parts-per-million (ppm) sensitivity with negligible drift for atmospheric science, air…
The Picarro G2210-i isotope analyzer is designed to address the scientific community’s need for real-time methane emissions source attribution. High-precision atmospheric methane and ethane measurement capabilities, combined with carbon dioxide and water vapor measurements, provide the…
The Picarro L2130-i isotope analyzer provides high quality measurements of water stable isotopes for demanding applications such as paleoclimatology, hydrology, and oceanography. δ18O and δ2H high-precision measurements can be made with water samples from…
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If you hear anyone from Picarro talking about radical insights into the global carbon, water and nitrogen cycles – “essentially the building blocks of all life on Earth” – we are referring to the information that our CRDS technology provides about the molecules that comprise these cycles - notably, their stable isotope…
The Picarro G2508 gas concentration analyzer provides simultaneous, precise measurement of nitrous oxide (N2O), methane (CH4), carbon dioxide (CO2), ammonia (NH3) at parts-per-billion (ppb), and water (H2O) vapor at parts-per-million (ppm)…
Picarro has developed a field-deployable, real time, ambient gas monitor capable of measuring atmospheric levels of carbon dioxide, methane, hydrogen sulfide, and ammonia with parts-per-billion (ppbv) sensitivity and water vapor with parts-per-million (ppmv) sensitivity. Results from field trials of three different CO2 analyzers at Harvard, Penn State, and the NOAA facility in Boulder CO…
Description of field-deployable instrumentation that measures carbon dioxide, methane, and water vapor with both high-accuracy and high-precision would reduce the uncertainty in the determination of terrestrial sources and sinks of these dominant greenhouse gases.
Results presented from field trials at Woods Hole Oceanographic Institute and laboratory tests at INSTAAR of a newly available analyzer capable of performing continuous measurements of stable isotopes (δD and δ18O) of liquid water and / or water vapor samples.
Picarro has developed an isotope analyzer for lab and field measurements of carbon isotopes in CO2 with the goal of allowing turnkey analysis to be done without the need for flask samples and complex IRMS methods. Here we present a description of the analyzer and its technology as well as recent results from two different collaborators who utilized the analyzer.
Describing work by CSIRO, CO2 CRC and Picarro to characterize sequestration site leaks using tracers and isotopes.
Describes the first field data taken by Oregon State University of Picarro's dual-species Eddy-Covariance analyzer.
Describes work by INSTAAR, NOAA & Picarro on both liquid water and water vapor measurements of stable water isotopes.
From the EGU 2009 General Assembly, describing measurements of edible oils and chocolates made with Picarro's iTOC-CRDS Isotopic Carbon Analyzer.
Describes specific design aspects of WS-CRDS-based analyzers and how these details result in ultra-stable field measurements.
Describes how CRDS works and shows hydrogen, oxygen and carbon isotope data for water vapor, evapotranspiration, food and agricultural applications.
Describes liquid water and water vapor isotope measurements with the Picarro isotopic water analyzer.
Describes field testing of Picarro's fast analyzer for eddy covariance flux measurements of greenhouse gases.
Describes results of laboratory testing and field campaigns with Picarro's flight-ready greenhouse gas analyzer.
Describes results from a Picarro N2O analyzer based in the mid-infrared spectral region.
Describes a newly-developed analyzer for tracer-based measurements and shows results from field work using such a system.
Describes recent developments in GC-C-CRDS-based instrumentation applied to isotope measurements in large molecules.
Describes the flexibility of Picarro's fast water isotope analyzer for applications requiring very short sample-to-sample measurement times and shows data taken in lab and field measurements.
Describes recent developments in CRDS instrumentation in the mid-infrared spectral region for applications using N2O isotopologue and trace concentration measurements.
Describes field work conducted with Picarro water isotope analyzer for both water vapor and liquid water samples.
Describes use and methods for stable isotope-based food adulteration testing using Cavity Ring-Down Spectrometry.
Describes application and function of a the LIAISON, a new Picarro universal interface for high throughput analysis.
While stable isotope techniques have been previously applied to partition evapotranspiration (ET) fluxes in crops, it has only recently become possible to take in situ, long-term, continuous (every 10 seconds) measurements of stable water vapor isotopologues. A Picarro water vapor isotope analyzer (L1115-i) based on cavity ringdown spectroscopy (CRDS) was recently…
The regulation of Earth’s climate and its ability to sustain life are critically linked to water as it exists in all three of its phases (gas, liquid, and solid). Earth’s water cycle, its movement between the hydrosphere, biosphere, and the atmosphere, and how it undergoes phase changes, is incredibly complex. While we continue to gain insight into the water cycle, there remains…
The quantification of fugitive methane emissions from extended sources such as landfills is problematic due to the high temporal variability and spatial heterogeneity of the emission. Additionally, the relationship between the emission rate and the gas concentration at a given location is dependent on the meteorological conditions and local topography, preventing accurate quantification of…
Cavity Ring-Down spectroscopy is becoming a gold standard for atmospheric monitoring. High sensitivity and precision coupled with low drift characteristics ensure optimal operation even in remote field stations or on aircraft and ships. However, current platforms have been limited to two or three species simultaneous observation. Research and development at Picarro have been focused on…
Hydrothermal fluids from two vent sites along the East Scotia Ridge, E2 and E9, were analyzed for their hydrogen and oxygen isotopic values using a Picarro L1115-i CRDS. The fluids display varying salinity, sulfate and hydrogen sulfide content. None of the samples analyzed in this work showed any signs of spectroscopic interference. Isotopic values of the fluids were combined with…
The world’s first continuous flow isotopic TIC/DOC-CRDS measurements are reported here with remarkable achieved precisions. A measurement precision of the isotopic ratio in the range of 0.2 ‰ to 0.4 ‰ was achieved in minutes of measurement time. Such precision readily distinguishes the isotopic DIC and DOC signatures from a set of three different streamwater samples collected from various…
Describes a field campaign wherein a Picarro water isotope analyzer was used to measure isotopes in water vapor over a corn field in China for the purpose of studying evapotranspiration. The Picarro sampled vapor along with a cold trap sampling system and the real-time Picarro data was compared to offline analysis of the trapped vapor.
The recent development of a field deployable water isotope analyzer using CRDS technology was used to directly measure the vapor isotopes in real time and at multiple heights above the crop canopy. This technique was coupled with additional samples gathered using conventional techniques and a new xylem water extracting apparatus developed by the IAEA.
In a paper published by the Integrated Carbon Observation System (ICOS), the drift performance of 47 Picarro analyzers of 3 different generations were compared (Yver Kowket al, Atmos. Meas. Tech. Discuss., 8, 4219–4272, 2015). The results show that methane drift (the minimum of the Allan standard deviation) was much better in first-generation G1000 analyzers.
…High-salinity waters such as Seawater poses an operational and maintenance challenge to the measurements of water stable isotopes via Cavity Ring-Down Spectroscopy. As liquid samples are evaporated in the vaporizer peripheral before being sent to the CRDS analyzer, salt precipitates accumulate in the vaporizer chamber. As a result, the sample-to-sample memory performance degrades over time…
Soil flux chamber measurements are a key tool for determining production and sequestration of direct and indirect greenhouse gases. The Picarro G2508 Cavity Ring-down Spectrometer radically simplifies soil flux analyses by providing simultaneous measurements of five gases: CO2, CH4, N2O, NH3, and H2O, and by ready field deployment. The Picarro Soil Flux Software (SFP) …
With a global warming potential of nearly 300, N2O is a critically important greenhouse gas, contributing about 5 % of the US total GHG emissions. Agriculture soil management practices are the dominant source of anthropogenic N2O emissions, contributing nearly 75 % of US N2O emissions. In urban areas, vehicle tailpipe emissions and waste water treatment plants are…
The necessity for constant monitoring of greenhouse gases (GHGs) is clearly evident now more than ever. Moreover, interpreting and understanding the processes that dictate the production and consumption of these gases will allow for proper management of GHGs in order to mitigate its detrimental climate effects. Presence of oxygen, or lack of it, is the driving force for determining pathways…
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