COLUMN HEADING: DESCRIPTION
Year: Actual sampling year
Season: Seasons run from Oct in one year to end January in following year - exceptions noted in text
Cruise: Letter refers to ship: S=MRV Scotia, A= MRV alba na Mara, SJM=Sir John Murray (SEPA) eg 0120S is the first cruise of 2020 on the MRV Scotia
Region: Scottish Marine or Offshore Region
Field_ID: Descriptive name of towing site
TOW_ID: made up of cruise number and tow number for the cruise
DATE_Deploy: Date of deployment dd/mm/yyyy
TIME_Deploy: Time of deployment hh:mm
Decimal Latitude: at deployment (WGS84)
Decimal Longitude: at deployment (WGS84)
DATE_Retrieve: Date of sampler retrieval dd/mm/yyy
TIME_Retrieve: Time of sampler retrieval hh:mm
decLat_Retrieve: Decimal latitude at retrieval (WGS84)
decLong_Retrieve: Decimal longitude at retrieval (WGS84)
FLOW_METER_READING_deploy: The revolution count of flow meter at time of deployment (used for calculating tow length)
FLOW_METER_READING_retrieve: The revolution count of flow meter at time of retrieval (used for calculating tow length)
Tow_length (m): calculated by subtracting deploy from retrieve and multiplying by 0.3 (1 revolution of flow meter = 0.3m)
vol_filtered_m3: distancethrough water (tow length) multiplied by 0.0225 (net aperture in square meters in water during towing)
WIND_SPEED:
WIND_Direction:
SEA_STATE: sea state was equivalent to Beaufort Scale Force descriptors
Ship Speed: in nautical miles per hour
SUM_micro_km2: sum of microplastics per km squared sea surface
SUM_Macro_km2: sum of plastics > 5 mm per km squared sea surface
fibres_LTE5mm_km2: fibre items less than or equal to 5mm per km squared sea surface
beads_LTE5mm_km2: beads items less than or equal to 5mm per km squared sea surface
polystyrene_LTE5mm_km2: polystyrene items less than or equal to 5mm per km squared sea surface
fragments_LTE5mm_km2: fragments items less than or equal to 5mm per km squared sea surface
film_LTE5mm_km2: film items less than or equal to 5mm per km squared sea surface
nurdles_LTE5mm_km2: nurdles items less than or equal to 5mm per km squared sea surface
paint_flakes_LTE5mm_km2: paint_flakes items less than or equal to 5mm per km squared sea surface
fibres_GT5mm_km2: fibre items greater than 5mm per km squared sea surface
beads_GT5mm_km2: beads items greater than 5mm per km squared sea surface
polystyrene_GT5mm_km2: polystyrene items greater than 5mm per km squared sea surface
fragments_GT5mm_km2: fragments items greater than 5mm per km squared sea surface
film_GT5mm_km2: film items greater than 5mm per km squared sea surface
nurdles_GT5mm_km2: nurdles items greater than 5mm per km squared sea surface
paint_flakes_GT5mm_km2: paint_flakes items greater than 5mm per km squared sea surface
SUM_micro_m3: microplastics per cubic metre sea water
SUM_Macro_m3: sum of plastics > 5 mm per cubic metre sea water
fibres_LTE5mm_m3: fibre items less than or equal to 5mm per cubic metre sea water
beads_LTE5mm_m3: beads items less than or equal to 5mm per cubic metre sea water
polystyrene_LTE5mm_m3: polystyrene items less than or equal to 5mm per cubic metre sea water
fragments_LTE5mm_m3: fragments items less than or equal to 5mm per cubic metre sea water
film_LTE5mm_m3: film items less than or equal to 5mm per cubic metre sea water
nurdles_LTE5mm_m3: nurdles items less than or equal to 5mm per cubic metre sea water
paint_flakes_LTE5mm_m3: paint flakes items less than or equal to 5mm per cubic metre sea water
fibres_GT5mm_m3: fibre items greater than 5mm per cubic metre sea water
beads_GT5mm_m3: beads items greater than 5mm per cubic metre sea water
polystyrene_GT5mm_m3: polystyrene items greater than 5mm per cubic metre sea water
fragments_GT5mm_m3: fragments items greater than 5mm per cubic metre sea water
film_GT5mm_m3: film items greater than 5mm per cubic metre sea water
nurdles_GT5mm_m3: nurdles items greater than 5mm per cubic metre sea water
paint_flakes_GT5mm_m3: paint flakes items greater than 5mm per cubic metre sea water
SUM_LTE5mm_count: Count of all microplastic items less than or equal to 5mm in sample
SUM_GT5mm_count: Count of all microplastic items greater than 5mm in sample
fibres_LTE5mm_count: Count of fibre items less than or equal to 5mm in sample
beads_LTE5mm_count: Count of beads items less than or equal to 5mm in sample
polystyrene_LTE5mm_count: Count of polystyrene items less than or equal to 5mm in sample
fragments_LTE5mm_count: Count of fragments items less than or equal to 5mm in sample
film_LTE5mm_count: Count of film items less than or equal to 5mm in sample
nurdles_LTE5mm_count: Count of nurdles items less than or equal to 5mm in sample
paint_flakes_LTE5mm_count: Count of paint flakes items less than or equal to 5mm in sample
fibres_GT5mm_count: Count of fibre items greater than 5mm in sample
beads_GT5mm_count: Count of beads items greater than 5mm in sample
polystyrene_GT5mm_count: Count of polystyrene items greater than 5mm in sample
fragments_GT5mm_count: Count of fragments items greater than 5mm in sample
film_GT5mm_count: Count of film items greater than 5mm in sample
nurdles_GT5mm_count: Count of nurdles items greater than 5mm in sample
paint_flakes_GT5mm_count: Count of paint flakes items greater than 5mm in sample