Location:  Prestwick, Scotland (with possible short trips to Keflavik, Iceland or/and Kiruna, Sweden)    
Date: March 2014    
Flying hours 138    
Sondes: 120

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COSMICS - Cold-air Outbreak and sub-Millimetre Ice Cloud Study

Science Objectives

  ISMAR

  1. To evaluate the performance of the ISMAR instrument.
  2. To measure the submillimetre spectral signature of cirrus and clear skies. Other aircraft instruments are required to provide “truth” and provide closure measurements.
  3. To obtain microwave, submillimetre, infrared and visible aircraft data simultaneously with satellite overpasses (e.g. A-train, METOP).
  4. To overfly ground based sites in cirrus conditions and obtain submillimetre and in-situ cirrus measurements.
 
Cold Air Outbreak
  • To investigate processes controlling the transition between stratiform and cellular cloud structure in cold-air outbreak flows, including:
  • Surface fluxes of heat and moisture
  • Boundary-layer structure and flux profiles
  • Microphysical and precipitation processes, in particular ice formation and growth

 

Location: Cape Verde     Date: Aug 2015     Flying Hours: Met Office 90 + EUFAR 10     Sondes: 48

ICE-D:  Ice in Clouds Experiment - Dust

Scientific Objectives:
The role of mineral dust as cloud condensation nuclei (CCN), ice nuclei (IN) and the effect of aerosol interactions with cloud evolution remains uncertain. These aerosol-cloud interactions affect the radiative properties of clouds and are a large contribution to the uncertainty in climate change. Hence, measurements of cloud-forming particles (CCN and IN) are fundamental. The Sahara is a primary source of mineral dust particles, transported in the atmosphere westwards across the Atlantic. Mineral dust with sources from the Saharan region have been identified as efficient ice nuclei in laboratory and field studies, but the effect on cloud evolution has not been measured. The Cape Verde area is near the source region where dust concentrations are large, and both dust events and cumulus congestus clouds are frequently observed.  The large gradients in dust concentration enable aircraft sampling over a wide range of conditions in a single flight, there are diverse physical properties and mineralogical composition, and ageing by surface chemical effects over the ocean are large.

Location: Prestwick, UK     Date: November-December 2014     Flying hours: 70     Sondes: 68 

 

STICCS - Submillimetre Trial In Cirrus and Clear Skies
CIRCCREX - CIRrus Cloud-Coupled Radiation EXperiment
PIKNMIX-D - Prestwick-based MIX of cloud physics sorties

 

Science Objectives

STICCS
• To evaluate the performance of the ISMAR instrument.
• To measure the submillimetre spectral signature of cirrus and clear skies. Other aircraft instruments are required to provide “truth” and provide closure measurements.
• To obtain microwave, submillimetre, infrared and visible aircraft data simultaneously with satellite overpasses (e.g. A-train, METOP).
• To overfly ground based sites (Chilbolton radar) in cirrus conditions and obtain submillimetre and in-situ cirrus measurements.

 

PIKNMIX-C
• To obtain microphysical and dynamical measurements in a variety of cloud regimes including cold air outbreaks, cirrus and mid-level mixed phase clouds.
• Flights in combination with the operational weather radar at Stornaway & Aberdeen
• Potential intercomparison flight with MOCCA.
• Cold air outbreak up towards Iceland (potential overnight if hangar available)
• Spiral descent in Cirrus

 

 

Kiruna, Sweden and Svalbard, Spitsbergen - 30 flying hours, (no dropsondes)

MAMM_Map1

 

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MAGIC Operating Areas: North Sea gas fields, Sodankyla, Abisko, Pallas, Svalbard

 Location: Guam, Western Pacific     Date: Jan-Feb     Flying hours: 145     Sondes: Nil

 

CAST - Co-ordinated Airborne Studies in the Tropics

The main focus of the programme is to study the chemical and physical properties of the tropical tropopause layer (TTL) and their impacts in controlling the composition of the UTLS (upper troposhpere, lower stratosphere). Specifically the research mission will focus on the Western Pacific Warm Pool region. In addition convective transport of very short and long-lived chemical species will be measured together with tropospheric moist convective dynamic processes in this important but data sparse region.

The research will be delivered in partnership with NASA through collaboration with the NASA Earth Venture ATTREX1 (Airborne Tropical Tropopause Experiment) mission deploying the NASA Global Hawk unmanned aerial vehicle (UAV). This project will be in support of the NERC programme “Observations and modelling of the tropical tropopause layer”.  We will also be working in collaboration with NCAR's CONTRAST (CONvective TRansport of Active Species in the Tropics) campaign using their GV aircraft.