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INSTRUMENT

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  • Activity - Quality

    Activity - Quality

    Swarm - Spherical Elementary Current System

    The Swarm-SECS project investigates how the method of Spherical Elementary Current Systems can be applied to Swarm magnetic and electric...

  • Event - Workshop

    Event - Workshop

    Swarm Ionospheric Currents Products Workshop

    Download Swarm Ionospheric Currents Products Workshop presentations, from 7 to 8 September 2017, to find out more.

  • Data - Data Description

    Data - Data Description

    Swarm Ionosphere/Magnetosphere

    Spherical harmonic model of the large-scale magnetospheric field and its Earth-induced counterpart, spherical harmonic model of the daily geomagnetic variation at middle latitudes and low latitudes, Ionospheric bubble index, ionospheric total electron content, ionosphericfield-aligned currents, dayside ionospheric equatorial electric field, ionospheric plasma density and plasma irregularities.

  • Mission - Earth Explorers

    Mission - Earth Explorers

    Swarm

    Swarm is dedicated to creating a highly detailed survey of the Earth’s geomagnetic field and its temporal evolution as well as the electric field in the atmosphere using a constellation of three identical satellites.

  • Tools - Other

    Tools - Other

    AMPS

    The Average Magnetic field and Polar current System model (AMPS) is a climatological model of polar ionospheric currents, based on magne...

  • Tools - Other

    Tools - Other

    Swarm Aurora

    Swarm-Aurora was designed to facilitate and drive the use of Swarm in-situ measurements in auroral science.

  • News - Scientific Highlights

    News - Scientific Highlights

    Gravity Field Models from Swarm data

    In addition to its geomagnetic objectives, GPS receivers onboard Swarm can and have already been exploited to measure temporal variations in Earth's global gravity field.

  • Event - Meeting

    Event - Meeting

    Swarm 4D-Ionosphere Science Meeting

    Download the Swarm 4D-Ionosphere Science Meeting presentations, from 5 to 6 September 2017, to find out more.

  • Mission - Earth Explorers

    Mission - Earth Explorers

    Explore Projects

    Field-Aligned Current Products, Ionosphere, and Thermosphere Systems) Swarm-SECS (Swarm - Spherical Elementary Current System)

  • Mission - Earth Explorers

    Mission - Earth Explorers

    Swarm Data

    The access and use of Swarm products are regulated by ESA's Data Policy and subject to the acceptance of the specific Terms and Conditions. In accordance with ESA Earth Observation Data Policy, all Swarm Level 1b and Level 2 products are freely accessible to all users via anonymous access. They can be downloaded : via any HTTP browser at http://swarm-diss.eo.esa.int directly via an ftp client at ftp://swarm-diss.eo.esa.int The top-level structure is divided into the 'Level1b', 'Level2daily', and 'L2longterm' and 'Advanced' directories. Within the 'Level1b' and 'Level2daily' directories, the structure presents first the 'Latest baselines' and 'Entire_mission_data' folders, then a Simplified datatype list, and finally, the satellite ID, if applicable. Please also notice that for each L1/L2 directory there will be a .txt file with the list of products available at that time in the corresponding directory tree. You can find all of the details in the document 'Swarm PDGS Data Access User Manual', and it is key to note that: LATEST BASELINES FOLDER: the user will find all the interoperable products generated in a consistent way with the application of all significant data quality improvements, but not necessarily covering the entire mission. ENTIRE MISSION DATA FOLDER: the users will find the full data coverage of the entire mission, regardless of any consideration of interoperability among the same product type. In other words, the data might have been produced with strategies or knowledge that does not make the products necessarily interoperable for certain types of science. This information can still be captured by looking at the Product Baseline number. N.B. This strategy ensures that users do not mix old data with new products that have been improved in quality by significant upgrades. It might occur that not all of the old data is immediately regenerated or reprocessed into the 'Latest_baselines' Folder. Therefore if the user does not find the improved product in the 'Latest_baselines' Folder but s/he is nonetheless interested in accessing the data without the significant data quality improvements, s/he can find them in the 'Entire_mission_data' Folder. PRODUCT BASELINE: is a number associated with a specific product type and satellite. The Product Baseline is identified by the first two of the four digits placed at the end of the file name, i.e. the first two digits of the File_Version field represent the Product Baseline, while the last two represent an incremental File Counter. Example: SW_OPER_STRCATT_1B_20140218T000000_20140218T235959_0301_MDR_SAT_AT.cdf Where 03 is the Product Baseline number, while 01 is only an incremental File Counter. The Product Baseline is increased when upgrades lead to significant improvements in the data quality of the related products. This subsequently leads to a reprocessing of the affected product types. Products with an older File Counter but same Product Baseline are erased.

  • Mission - Earth Explorers

    Mission - Earth Explorers

    Swarm Objectives

    Swarm Objectives The objectives of the Swarm mission are to: study core dynamics, geodynamo processes and core-mantle interaction map lithospheric magnetisation and its geological interpretation determine the 3D electrical conductivity of the mantle investigate electric currents flowing in the magnetosphere and ionosphere Science By making key observations to untangle and model the many sources and strengths of Earth’s continuously changing magnetic field, the Swarm mission is set to advance many areas of Earth science. One of the very few ways of probing Earth’s liquid core is to measure the magnetic field it creates and how it changes over time. Since variations in the field directly reflect the flow of fluid in the outermost core, new information from Swarm will further our understanding of the physics and dynamics of Earth’s stormy heart. The constellation of Swarm satellites will produce, for the first time, global 3D images of electrical conductivity in the mantle. This will yield evidence of its chemical composition and temperature, which will complement seismic analysis and observations of gravity such as those from ESA’s GOCE mission. We can learn more about the history of the magnetic field and geological activity by studying magnetism in the lithosphere. For example, by analysing the magnetic imprints of the ocean floor, past core-field changes can be reconstructed. This also helps to investigate tectonic plate motion. Magnetic signals from the crust need to be determined from space in much higher resolution than currently available. By complementing the spatial scales observed by Swarm with magnetic surveys from aircraft, our understanding of Earth's crust will be improved. Magnetic sensors measure a tangle of the core field with other signals from magnetised rocks in the crust, electrical currents flowing in the ionosphere, magnetosphere and oceans, and currents inside Earth induced by external fields. The challenge is to separate the different sources of magnetism. GPS receivers, an accelerometer and an electric field instrument deliver supplementary information to study the interaction between Earth’s magnetic field and the solar wind. As well as the advanced technology the satellites carry, their carefully selected orbits are essential to the success of the mission. At the start of life in orbit, the three satellites are relatively close to each other. Two orbit almost side-by-side at the same altitude: initially at about 460 km, but descending to around 300 km over the life of the mission. The lower the satellites are, the more sensitively they can measure small magnetic features in the crust. The third satellite remains in a higher orbit, initially at 530 km, and at a slightly different inclination. The satellites’ orbits drift, resulting in the upper satellite crossing the path of the lower two at an angle of 90° in the third year of operations These drifting orbits mean that all the magnetic signals originating from Earth and those caused by the Sun are captured. The Sun generates typical day and night patterns in the ionosphere between the satellites and Earth. Magnetic storms resulting from solar activity also cause irregular disturbances in the ionosphere and magnetosphere. Essentially, the constellation optimises the measurements of relevant phenomena. This helps to distinguish between the effects of different sources of magnetism. For example, global field models of the core and crust and conductivity maps of the mantle are needed to study the interior of Earth. These can only be obtained from a combination of selected observations from all three satellites over time. For studies of the upper atmosphere, each satellite provides information such as ion speed, direction and temperature. Density and winds around each satellite can be derived by using data from the different instruments. Combining observations of the lower pair of satellites will lead to a new way of quantifying the currents that flow along geomagnetic field lines connecting the magnetosphere to the high-latitude ionosphere. It is therefore essential to have the constellation of satellites to offer new opportunities for science. A unique mixture of local and global products will allow data users to address some of today’s open scientific questions related to global change. Swarm will also benefit a broad range of applications in Earth sciences and space weather. See the highest resolution map of Earth's lithospheric magnetic field from space. This was produced from three years of Swarm data in combination with historical data from DLR's CHAMP mission:

  • Mission - Earth Explorers

    Mission - Earth Explorers

    Publications

    3390/rs13040759 Fenrich FR, Rankin R, Sydorenko D, Archer WE, Knudsen DJ (2021), "Birkeland current boundary flows associated with ...

  • Instrument - Magnetic Field/Electric Field Instruments

    Instrument - Magnetic Field/Electric Field Instruments

    ACC (Swarm)

    find out more The Average Magnetic field and Polar current System model (AMPS) is a climatological model of polar ionospheric currents,...

  • Event - Workshop

    Event - Workshop

    6th Swarm Data Quality Workshop

    Download 6th Swarm Data Quality Workshop presentation files from September 2016.

  • Mission - Earth Explorers

    Mission - Earth Explorers

    Abstracts

    P, "Derivation of the full current density vector in the Earth's ionosphere low- and mid-latitude F region using ESA's Swarm satell...

  • Event - Workshop

    Event - Workshop

    7th Swarm Data Quality Workshop

    Download the 7th Swarm Data Quality Workshop presentations from October 2017.

  • Instrument - Magnetic Field/Electric Field Instruments

    Instrument - Magnetic Field/Electric Field Instruments

    Products Information

    Quality: Current Dataset and History Swarm Instrument Unavailability Information on the availability of Swarm instruments can be found h...

  • Event - Workshop

    Event - Workshop

    5th Swarm Data Quality Workshop

    Download the 5th Swarm Data Quality Workshop presentations from September 2015.

  • Event - Workshop

    Event - Workshop

    4th Swarm Data Quality Workshop

    Download 4th Swarm Data Quality Workshop presentations from December 2014.

  • Event - Workshop

    Event - Workshop

    8th Swarm Data Quality Workshop

    Download 8th Swarm Data Quality Workshop presentation files from October 2018.