CAL_LID_L2_05kmAPro-Standard-V4-51 is the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) Lidar Level 2 Aerosol Profile, Version 4-51 data product. Data for this product was collected using the CALIPSO Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) instrument. The CALIPSO satellite comprises three instruments: CALIOP, Imaging Infrared Radiometer (IIR), and Wide Field Camera (WFC). CALIPSO is a joint satellite mission between NASA and the French Agency CNES (Centre National d'Etudes Spatiales). CALIPSO was launched on April 28, 2006, to study the impact of clouds and aerosols on the Earth's radiation budget and climate. From June 13, 2006, to September 13, 2018, CALIPSO was part of the A-Train constellation for coincident Earth Observations. After September 13, 2018, the satellite was lowered from 705 to 688 km to resume flying in formation with CloudSat, heretofore called the C-Train.

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LARC_CLOUD Short Name: CAL_LID_L2_05kmAPro-Standard-V4-51 Version ID: V4-51 Unique ID: C3880521383-LARC_CLOUD

CAL_LID_L1-Standard-V5-00 is the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) Lidar Level 1B profile data product. This data product was collected using the Cloud-Aerosol Lidar with Orthogonal Polarization(CALIOP) instrument. The CALIOP Level 1B data product contains a half orbit (day or night) of calibrated and geolocated single-shot (highest resolution) lidar profiles, including 532 nm and1064 nm attenuated backscatter and depolarization ratio at 532 nm. CALIPSO was a partnership between NASA and the French Space Agency, CNES. CALIPSO was launched on April 28, 2006 to study the many roles played by clouds and aerosols in Earth’s climate and weather. It flew in the international A-Train constellation for coincident Earth observations from launch until September 13, 2018, when CALIPSO began lowering its orbit from 705 km to 688 km (428 miles)above the Earth to resume formation flying with CloudSat as part of the “C-Train”. The CALIPSO satellite carried three remote sensing instruments: the Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP), the Imaging Infrared Radiometer (IIR), and the Wide Field-of-View Camera(WFC). By mutual agreement between NASA and CNES, the CALIPSO science mission concluded on August 1, 2023.

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LARC_CLOUD Short Name: CAL_LID_L1-Standard-V5-00 Version ID: V5-00 Unique ID: C3292851686-LARC_CLOUD

CAL_LID_L2_05kmCLay-Standard-V4-51 is the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) Lidar Level 2 5 km Cloud Layer Data, Version 4-51 data product. This data product was collected using the Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) instrument. Within this layer product are two general classes of data: Column Properties (including position data and viewing geometry) and Layer Properties. The lidar layer products consist of a sequence of column descriptors, each associated with a variable number of layer descriptors. The column descriptors specify the temporal and geophysical location of the column of the atmosphere through which a given lidar pulse travels. Also included in the column descriptors are indicators of surface lighting conditions, information about the surface type, and the number of features (e.g., aerosol layers) identified within the column. The CALIPSO satellite comprises three instruments: CALIOP, Imaging Infrared Radiometer (IIR), and Wide Field Camera (WFC). CALIPSO is a joint satellite mission between NASA and the French Agency CNES (Centre National d'Etudes Spatiales). CALIPSO was launched on April 28, 2006, to study the impact of clouds and aerosols on the Earth's radiation budget and climate. From June 13, 2006, to September 13, 2018, CALIPSO was part of the A-Train constellation for coincident Earth Observations. After September 13, 2018, the satellite was lowered from 705 to 688 km to resume flying in formation with CloudSat, called the C-Train.

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LARC_CLOUD Short Name: CAL_LID_L2_05kmCLay-Standard-V4-51 Version ID: V4-51 Unique ID: C2722461769-LARC_CLOUD

Metadata record for data from AAS (ASAC) Project 3140 See the link below for public details on this project. Public Summary A thorough understanding of the coupling and dynamics of the Antarctic lower atmosphere is critical for understanding how it will respond to climate change. However, this region of the atmosphere has not been studied in sufficient detail. Energy and momentum are redistributed in the atmosphere by large scale planetary waves and small scale gravity (buoyancy) waves. By combining the high-resolution instruments from Davis with global satellite observations, these waves and their effect on the atmosphere will be understood. Results from this project will be of value to modellers for improving global climate models. Project objectives: This project will study the variability, dynamics and coupling of the Antarctic lower atmosphere. The objective is to determine some of the most important and urgently needed information for global climate models by examining high-resolution observational datasets. Areas where understanding is limited and need to be improved include the effects of atmospheric gravity (buoyancy) waves on the lower atmosphere and their relation to the cold biases observed in the polar stratospheres of models (Sato and Yoshiki, 2008), determining critical wave parameter information (Alexander et al., 2008a), and studying troposphere - stratosphere coupling, particularly in relation to the polar night jet (e.g. Baumgaertner and McDonald 2007, Hei et al 2008). In order to achieve this, data which are collected at Davis as part of the current ASAC projects: a) the lidar - project 737 (Klekociuk et al. 2003) and b) the VHF MST radar - project 2325 (Morris et al. 2006) will be analysed. These results will be combined with data collected by the Bureau of Meteorology (radiosondes and ozonesondes launched at Davis) and various satellites including the CHAMP (Challenging Minisatellite Payload) and COSMIC (Constellation Observing System for Meteorology, Ionosphere and Climate) GPS radio occultation experiments (Alexander et al. 2008c). The multi-year ground-based observational records at Davis collected by the lidar and radar will be used to study the spatial and temporal variability of gravity waves in the troposphere and stratosphere over a wide range of scales. Waves and their sources will be identified and quantified. Such sources include the stratospheric polar night jet, orographic waves, tropospheric weather frontal systems and storms. The lidar and radar data will be combined with ozonesonde and radiosonde data from routine Bureau of Meteorology flights made at Davis for studies of stratosphere-troposphere interactions, dynamics, mixing, folding and mass transport across the tropopause. Satellite-based data, including those made by GPS radio occultation, will be used to set the Davis results into a regional and global scale context. The energy and momentum of small-scale gravity waves and large scale planetary waves will be examined. In particular, the stratospheric polar night jet will be studied to investigate wave generation and upward and downward propagation and understand how the downward propagating waves affect the troposphere. This project will establish a world-wide reputation for AAD as providing leading-edge studies, analysis and interpretation of the dynamic variability of the Antarctic lower atmosphere. Taken from the 2009-2010 Progress Report: Progress against objectives: Gravity wave activity associated with both the Antarctic and Arctic polar stratospheric vortices has been quantified using COSMIC GPS satellite data (Alexander et al. 2009). The high resolution nature of these data allowed information on regional scales and short duration wave processes to be identified and quantified. In particular, large intermittent bursts of orographic wave activity were identified above the Antarctic Peninsula. This has led to a continuing investigation of the effect of these waves on Polar Stratospheric Clouds (PSCs) by incorporation of CALIPSO satellite lidar data and MLS trace gas observations, both from the lower stratosphere. Foundations for this PSC / wave interaction were laid with work completed during the first year of project 3140, i.e. both the gravity wave analysis of Alexander et al (2009) and the planetary wave results of Alexander and Shepherd (2010). Lidar temperature data obtained in the upper troposphere - lower stratosphere (UTLS) region have been analysed and in particular one case study of a stratospheric intrusion during May 2008 has been identified and studied in detail. With the addition of satellite and radiosonde data, the lidar results are allowing quantification of small scale gravity wave parameters as the passage of a large scale planetary wave results in irreversible mixing of stratospheric air into the troposphere. Further UTLS experiments were run during winter 2009 by the chief investigator, thus allowing a statistical analysis of these events to be conducted in the future. A comparison between MST radar tropospheric winds and radiosonde winds revealed issues in the MST data which are still being addressed before these data become ready to use.

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AU_AADC Short Name: AAS_3140 Version ID: 1 Unique ID: C1214311613-AU_AADC

This BBP data suite provides regional estimates of the particulate backscattering coefficient, bbp(532 nm) (units: m⁻¹) derived from the CALIOP lidar aboard CALIPSO. CALIOP’s active 532-nm channel enables nighttime and high-latitude retrievals where passive ocean-color sensors are often limited, and published evaluations show that space-lidar bbp is a strong complement to ocean color and in situ float observations for upper-ocean optical and biogeochemical studies. Typical uses include time-series analysis of particulate optics, high-latitude/seasonal studies, and providing independent constraints for algorithms that link bbp to carbon stocks or phytoplankton dynamics. Users should note CALIOP’s limited subsurface penetration (~a few optical depths) and apply the product’s recommended screening (day/night, quality flags) before analysis. Geophysical variables in this suite include: - bbp – Particulate backscattering coefficient at 532 nm (m⁻¹)

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OB_CLOUD Short Name: CALIPSO_CALIOP_L3_BBP Version ID: 1 Unique ID: C3574826988-OB_CLOUD