SKIM

Sea surface KInematics Multiscale monitoring (SKIM)

Mission type| Oceanography
Operator| ESA
Mission duration| Planned: 5–7 years
Start of mission
Launch date| not scheduled[1]
Rocket| Vega C
Launch site| Kourou ELV
Contractor| Arianespace
Orbital parameters
Reference system| Geocentric
Regime| Low Earth
Semi-major axis| 831 km (516 mi)
Repeat interval| 29 days
| Instruments

SKaR| SKIM Ka-band Radar
Global Positioning System Payload
Laser Retroreflector

Sea surface kinematics multiscale monitoring (SKIM) was one of the two candidate missions for the 9th Earth Explorer mission of in the Living Planet Programme of the European Space Agency (ESA). SKIM and the other candidate (FORUM) were pre-selected for a detailed study in November 2017. Only one of the two candidates was to be selected in 2019 for immediate implementation and a possible launch by the year 2025, and FORUM was chosen.[2][1]

## Contents

* 1 Context
* 2 Scientific Objectives
* 3 References
* 4 External links

## Context

SKIM builds on the technological heritage of the SWIM instrument now flying on the China-France Ocean Satellite, with the important addition of Doppler measurement and changing from Ku to Ka-band. SKIM also inherits experience with Ka-band altimetry from the Indian-France SARAL-AltiKa mission.[3]

## Scientific Objectives

The mission's science goals are to [4]

* determine how the dynamics of the ocean total surface current velocity influence the integrated Earth system

more specifically,

* Determine the transport by waves and currents of material at the ocean surface including plankton, nutrients, heat, carbon, oil, and marine plastic debris
* Map and apply currents and its components to generate better estimates of atmosphere–ocean exchanges of heat, gas, momentum and energy accounting for the full interplay between the surface ocean and the lower atmosphere (including upper ocean mixing)
* The satellite will overfly Earth from 83°S to 83°N, covering at least 97 percent of the globe.

## References

1. ↑ 1.0 1.1 "A new satellite to understand how Earth is losing its cool" (in en-GB). 24 September 2019. https://www.esa.int/Our_Activities/Observing_the_Earth/A_new_satellite_to_understand_how_Earth_is_losing_its_cool.
2. ↑ "Measuring currents, ice drift, and waves from space...". Ocean Science (Copernicus GmbH) 14: 337–354. May 2018. doi:10.5194/os-14-337-2018. https://eprints.soton.ac.uk/422295/1/os_14_337_2018.pdf. Retrieved July 6, 2019.
3. ↑ "ESA SKIM - Mission". Ifremer. https://www.skim-ee9.org. Retrieved July 8, 2019.
4. ↑ ESA (in en). ﻿Earth Explorer 9 Candidate Mission SKIM – Report for Mission Selection﻿ (Report). pp. 264. https://atpi.eventsair.com/QuickEventWebsitePortal/19m11
earth-explorer-9-user-consultation-meeting/website/ExtraContent/ContentPage?page=3.

## External links

* SKIM hosted by LOPS

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