Results from the Jet Propulsion Laboratory stratospheric ozone lidar during STOIC 1989

McDermid, I. Stuart; Godin, S.; Walsh, T. D.

doi:10.1029/94jd02148

Cited by 12 publications

(7 citation statements)

References 21 publications

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“…The JPL-TMF tropospheric ozone lidar (TMTOL) is the third of four lidars designed at JPL for the long-term monitoring of atmospheric composition, thus contributing to the international network NDACC since 1999(McDermid et al, 2002. Over the course of nearly 20 years, the system has gone through several hardware and operational modifications.…”

Section: The Nasa-jpl Tmtol Lidarmentioning

confidence: 99%

“…For the SCOOP campaign, the lidar operation was extended to all times of the day, with ozone profiles reaching a 8-10 km top altitude dur-ing the brightest hours of the day and 15-25 km top altitude at nighttime. During the SCOOP campaign, the only hardware configuration difference with the description of McDermid et al (2002) is the discontinued use of the chopper and the newer Licel system.…”

Section: The Nasa-jpl Tmtol Lidarmentioning

confidence: 99%

“…gov/missions/TOLNet/, last access: 7 November 2018) was recently established to provide high spatiotemporal observations of tropospheric ozone to (1) better understand physical processes driving the ozone budget in various meteorological and environmental conditions, and (2) validate the tropospheric ozone measurements of upcoming spaceborne missions such as TEMPO (Tropospheric Emissions: Monitoring of POllution; http://tempo.si.edu, last access: 7 November 2018) (Zoogman et al, 2014;Johnson et al, 2018) or TROPOMI (TROPOspheric Monitoring Instrument, http://www.tropomi.eu/, last access: 7 November 2018). As of 2018, the network comprises six high-performance ozone differential absorption lidars (DIAL), namely the Canadabased Autonomous Mobile Ozone Lidar for Tropospheric Experiments (AMOLITE) (Strawbridge et al, 2018), the National Aeronautics and Space Administration (NASA) Langley Mobile Ozone Lidar (LMOL) (De Young et al, 2017), the University of Alabama in Huntsville Rocket-city O 3 Quality Evaluation in the Troposphere lidar (RO 3 QET) (Kuang et al, 2013), the JPL Table Mountain tropospheric ozone lidar (TMTOL) (McDermid et al, 2002), the National Oceanic and Atmospheric Administration (NOAA) Tunable Optical Profiler for Aerosol and oZone Lidar (TOPAZ) (Alvarez et al, 2011), and the NASA Goddard Space Flight Center mobile Tropospheric Ozone Lidar (TROPOZ) (Sullivan et al, 2014). Four of these lidars (AMOLITE, LMOL, TOPAZ, and TROPOZ) are mobile systems for deployment at remote locations, depending on field campaign and science needs of the moment.…”

Section: Introductionmentioning

confidence: 99%

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Validation of the TOLNet lidars: the Southern California Ozone Observation Project (SCOOP)

et al. 2018

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Abstract. The North America-based Tropospheric Ozone Lidar Network (TOLNet) was recently established to provide high spatiotemporal vertical profiles of ozone, to better understand physical processes driving tropospheric ozone variability and to validate the tropospheric ozone measurements of upcoming spaceborne missions such as Tropospheric Emissions: Monitoring Pollution (TEMPO). The network currently comprises six tropospheric ozone lidars, four of which are mobile instruments deploying to the field a few times per year, based on campaign and science needs. In August 2016, all four mobile TOLNet lidars were brought to the fixed TOLNet site of JPL Table Mountain Facility for the 1-week-long Southern California Ozone Observation Project (SCOOP). This intercomparison campaign, which included 400 h of lidar measurements and 18 ozonesonde launches, allowed for the unprecedented simultaneous validation of five of the six TOLNet lidars. For measurements between 3 and 10 km a.s.l., a mean difference of 0.7 ppbv (1.7 %), with a root-mean-square deviation of 1.6 ppbv or 2.4 %, was found between the lidars and ozonesondes, which is well within the combined uncertainties of the two measurement techniques. The few minor differences identified were typically associated with the known limitations of the lidars at the profile altitude extremes (i.e., first 1 km above ground and at the instruments' highest retrievable altitude). As part of a large homogenization and quality control effort within the network, many aspects of the TOLNet in-house data processing algorithms were also standardized and validated. This thorough validation of both the measurements and retrievals builds confidence as to the high quality and reliability of the TOLNet ozone lidar profiles for many years to come, making TOLNet a valuable ground-based reference network for tropospheric ozone profiling.

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Section: The Nasa-jpl Tmtol Lidarmentioning

confidence: 99%

Section: The Nasa-jpl Tmtol Lidarmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Validation of the TOLNet lidars: the Southern California Ozone Observation Project (SCOOP)

et al. 2018

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“…Despite the agreement is not so good for trend estimates compared to the theoretical accuracy (va few tenths of a Kelvin), this first inter-comparison was very promising. The second inter-comparison 32 was carried out in summer 1997 after the Rayleigh lidar system underwent a major change to the counting system in September 1994. The difference between the two lidars was within 1.5%, depending on the altitude.…”

Section: Temperature Comparisonsmentioning

confidence: 99%

Review of ozone and temperature lidar validations performed within the framework of the Network for the Detection of Stratospheric Change

Keckhut¹,

McDermid

Swart

et al. 2004

J. Environ. Monitor.

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The use of assimilation tools for satellite validation requires true estimates of the accuracy of the reference data. Since its inception, the Network for Detection of Stratospheric Change (NDSC) has provided systematic lidar measurements of ozone and temperature at several places around the world that are well adapted for satellite validations. Regular exercises have been organised to ensure the data quality at each individual site. These exercises can be separated into three categories: large scale intercomparisons using multiple instruments, including a mobile lidar; using satellite observations as a geographic transfer standards to compare measurements at different sites; and comparative investigations of the analysis software. NDSC is a research network, so each system has its own history, design, and analysis, and has participated differently in validation campaigns. There are still some technological differences that may explain different accuracies. However, the comparison campaigns performed over the last decade have always proved to be very helpful in improving the measurements. To date, more efforts have been devoted to characterising ozone measurements than to temperature observations. The synthesis of the published works shows that the network can potentially be considered as homogeneous within ¡2% between 20-35 km for ozone and ¡1 K between 35-60 km for temperature. Outside this altitude range, larger biases are reported and more efforts are required. In the lower stratosphere, Raman channels seem to improve comparisons but such capabilities were not systematically compared. At the top of the profiles, more investigations on analysis methodologies are still probably needed. SAGE II and GOMOS appear to be excellent tools for future ozone lidar validations but need to be better coordinated and take more advantage of assimilation tools. Also, temperature validations face major difficulties caused by atmospheric tides and therefore require intercomparisons with the mobile systems, at all sites.

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“…gov/missions/TOLNet/, last access: 7 November 2018) was recently established to provide high spatiotemporal observations of tropospheric ozone to (1) better understand physical processes driving the ozone budget in various meteorological and environmental conditions, and (2) validate the tropospheric ozone measurements of upcoming spaceborne missions such as TEMPO (Tropospheric Emissions: Monitoring of POllution; http://tempo.si.edu, last access: 7 November 2018) (Zoogman et al, 2014;Johnson et al, 2018) or TROPOMI (TROPOspheric Monitoring Instrument, http://www.tropomi.eu/, last access: 7 November 2018). As of 2018, the network comprises six high-performance ozone differential absorption lidars (DIAL), namely the Canadabased Autonomous Mobile Ozone Lidar for Tropospheric Experiments (AMOLITE) (Strawbridge et al, 2018), the National Aeronautics and Space Administration (NASA) Langley Mobile Ozone Lidar (LMOL) , the University of Alabama in Huntsville Rocket-city O 3 Quality Evaluation in the Troposphere lidar (RO 3 QET) (Kuang et al, 2013), the JPL Table Mountain tropospheric ozone lidar (TMTOL) (McDermid et al, 2002), the National Oceanic and Atmospheric Administration (NOAA) Tunable Optical Profiler for Aerosol and oZone Lidar (TOPAZ) (Alvarez et al, 2011), and the NASA Goddard Space Flight Center mobile Tropospheric Ozone Lidar (TROPOZ) (Sullivan et al, 2014). Four of these lidars (AMOLITE, LMOL, TOPAZ, and TROPOZ) are mobile systems for deployment at remote locations, depending on field campaign and science needs of the moment.…”

Section: Introductionmentioning

confidence: 99%

Responses to reviewer 1

Leblanc¹

2018

Preprint

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Results from the Jet Propulsion Laboratory stratospheric ozone lidar during STOIC 1989

Cited by 12 publications

References 21 publications

Validation of the TOLNet lidars: the Southern California Ozone Observation Project (SCOOP)

Validation of the TOLNet lidars: the Southern California Ozone Observation Project (SCOOP)

Review of ozone and temperature lidar validations performed within the framework of the Network for the Detection of Stratospheric Change

Responses to reviewer 1

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