The Joint ESA-NASA Multi-Mission Algorithm and Analysis Platform (MAAP): Enabling Open Science for the Global Aboveground Terrestrial Carbon Dynamics Research Community

No abstract availabl

ESA's Atmospheric Chemistry Mission - A Status Report

The challenges in understanding the atmospheric chemistry processes for climate research and to model and forecast the air quality on regional scale are still manifold. Presently, ESA is providing atmospheric chemistry data both from their core missions ERS-2 and Envisat as well as from Third Party Missions (TPM). ESAs core atmospheric chemistry instruments onboard ERS-2 and ENVISAT are GOME, GOMOS, MIPAS and SCIAMACHY. With ERS-2 launched in 1995 and ENVISAT in 2002, these instruments are providing a rich dataset to the scientific community and supporting operational services since more than 14 years. Currently, data from the following missions can be provided through ESA: ACE-FTS and MAESTRO data from the CSA SCISAT mission, OSIRIS and SMR data from the SSC ODIN mission, TANSO-FTS AND -CAI data from the JAXA/NIES/MOE GOSAT mission. It is currently planned that also OMI data from the NASA AURA mission will be accessible through ESA. In addition to the operational data, ESA acknowledges that the science community is developing and providing a number of important, quality products based on ESA missions. The presentation will summarise the status of all the issues addressed above with a focus on ESA instruments, algorithm development and data distribution

Calibration approaches and quality aspects for the ENVISAT Atmospheric Chemistry instruments

ENVISAT carries on-board the three Atmospheric Chemistry instruments GOMOS, MIPAS and SCIAMACHY. These instruments use different measurement techniques and observation geometries for atmospheric remote sounding. All of them require regular calibrations permitting to account for long term degradation of instrument performances or for short term variation of measurement conditions. This paper gives an overview on the most relevant calibration aspects of the three instruments and illustrates how to improve calibration for an even higher data quality

Seven years of data quality of the ENVISAT Atmospheric Chemistry missions: highlights, lessons learned and perspectives

The ENVISAT atmospheric chemistry instruments GOMOS, MIPAS and SCIAMACHY provide to the user community three separated, but complementary datasets of the most interesting trace gases, spanning a time interval of about seven years. With the project of extending the ENVISAT lifetime up to the end of 2013, the users will have the unique opportunity to investigate seasonal trend and long term evolution of several atmospheric phenomena over a time range of eleven years. This paper summarizes the activities performed in the frame of the data processing and quality assessment applied to the ENVISAT Atmospheric Chemistry instruments

The ENVISAT Atmospheric Chemistry missions: monitoring status and evolution

Three atmospheric chemistry sensors are on-board ENVISAT, launched on March 2002. Since then, the instruments and the processors have been accurately monitored in order to detect as early as possible any issue that could impact the quality of the data products. In this paper we show how the quality monitoring has evolved since the beginning of the mission and how the monitoring baseline and environment was adjusted to mission events like instrument anomalies and/or degradations and data processor issues and how the users benefit from this

Status of the ENVISAT Atmospheric Chemistry Mission

Three instruments on-board the ESA Envisat satellite are focussing on atmospheric chemistry, providing a rich dataset to the scientific community and supporting operational services. This paper focuses on the past, present and future of the GOMOS, MIPAS and SCIAMACHY instruments and ground segment. As ESA is preparing an extension of the ENVISAT mission to end of 2013, these effects have to be carefully evaluated. The potential impact on the data quality through the extension period will also be discussed

Les langues finno-ougriennes aujourd’hui II

Ce numéro poursuit l'entreprise lancée avec le no 44, c'est-à-dire qu'il passe en revue les langues finno-ougriennes de Russie centrale et du Nord dans leur position socio-linguistique. Les auteurs de ces articles sont des chercheurs linguistes, anthropologues, mais aussi des locuteurs et utilisateurs des langues finno-ougriennes ou des écrivains. Trois langues ne sont pas représentées dans ce recueil d'études: le mokcha, le permiak et le mansi. Mais la situation de ces langues s'insère dans les problématiques ici abordées: deux langues littéraires pour une dénomination (erza/mokcha, komi/permiak, mais la polémique sur le mari des plaines et le mari des montagnes est fortement développée par deux études illustrant bien les problèmes rencontrés : vieillissement des locuteurs, zones de transition multilingues. Le recueil est introduit par un essai de l'écrivain et chercheur oudmourte Aleksej Arzamazov

The Salinity Pilot-Mission Exploitation Platform (Pi-MEP): A Hub for Validation and Exploitation of Satellite Sea Surface Salinity Data

The Pilot-Mission Exploitation Platform (Pi-MEP) for salinity is an ESA initiative originally meant to support and widen the uptake of Soil Moisture and Ocean Salinity (SMOS) mission data over the ocean. Starting in 2017, the project aims at setting up a computational web-based platform focusing on satellite sea surface salinity data, supporting studies on enhanced validation and scientific process over the ocean. It has been designed in close collaboration with a dedicated science advisory group in order to achieve three main objectives: gathering all the data required to exploit satellite sea surface salinity data, systematically producing a wide range of metrics for comparing and monitoring sea surface salinity products’ quality, and providing user-friendly tools to explore, visualize and exploit both the collected products and the results of the automated analyses. The Salinity Pi-MEP is becoming a reference hub for the validation of satellite sea surface salinity missions by providing valuable information on satellite products (SMOS, Aquarius, SMAP), an extensive in situ database (e.g., Argo, thermosalinographs, moorings, drifters) and additional thematic datasets (precipitation, evaporation, currents, sea level anomalies, sea surface temperature, etc.). Co-localized databases between satellite products and in situ datasets are systematically generated together with validation analysis reports for 30 predefined regions. The data and reports are made fully accessible through the web interface of the platform. The datasets, validation metrics and tools (automatic, user-driven) of the platform are described in detail in this paper. Several dedicated scienctific case studies involving satellite SSS data are also systematically monitored by the platform, including major river plumes, mesoscale signatures in boundary currents, high latitudes, semi-enclosed seas, and the high-precipitation region of the eastern tropical Pacific. Since 2019, a partnership in the Salinity Pi-MEP project has been agreed between ESA and NASA to enlarge focus to encompass the entire set of satellite salinity sensors. The two agencies are now working together to widen the platform features on several technical aspects, such as triple-collocation software implementation, additional match-up collocation criteria and sustained exploitation of data from the SPURS campaigns