Dataset: ESA Sea Surface Temperature Climate Change Initiative (SST_cci): Advanced Very High Resolution Radiometer (AVHRR) Level 3 Uncollated (L3U) Climate Data Record, version 2.1#
Dataset identifier: esacci.SST.satellite-orbit-frequency.L3U.SSTskin.AVHRR-2.NOAA-12.AVHRR12_G.2-1.r1
Data store: cciodp
How to open this dataset in AVL JupyterLab
cciodp_store = new_data_store('cciodp')
ds = cciodp_store.open_data('esacci.SST.satellite-orbit-frequency.L3U.SSTskin.AVHRR-2.NOAA-12.AVHRR12_G.2-1.r1')
Bounding box map#
cciodp_store = new_data_store('cciodp')
ds = cciodp_store.open_data('esacci.SST.satellite-orbit-frequency.L3U.SSTskin.AVHRR-2.NOAA-12.AVHRR12_G.2-1.r1')
Map tiles and data from OpenStreetMap, under the ODbL.
Basic information#
Parameter | Value |
---|---|
Bounding box longitude (°) | -180.0 to 180.0 |
Bounding box latitude (°) | -90.0 to 90.0 |
Time range | 1981-08-23 to 2016-12-31 |
Click here for full dataset metadata.
Variable list#
Click on a variable name to jump to the variable’s full metadata.
Variable | Long name | Units |
---|---|---|
sea_surface_temperature | sea surface skin temperature | kelvin |
sea_surface_temperature_depth | sea surface temperature at 0.2 m | kelvin |
sea_surface_temperature_depth_anomaly | sea surface temperature anomaly at 0.2 m | kelvin |
sst_dtime | time difference from reference time | seconds |
sst_depth_dtime | time difference from reference time | seconds |
sses_bias | SSES bias estimate | kelvin |
sses_standard_deviation | SSES standard deviation | kelvin |
sea_surface_temperature_total_uncertainty | Total uncertainty in sea_surface_temperature | kelvin |
sea_surface_temperature_depth_total_uncertainty | Total uncertainty in sea_surface_temperature_depth | kelvin |
depth_adjustment | Adjustment to sea surface temperature at 0.2 m | kelvin |
adjustment_alt | Adjustment to alternative sea surface temperature retrieval | kelvin |
l2p_flags | L2P flags | [none] |
quality_level | quality level of SST pixel | [none] |
wind_speed | 10m wind speed | m s-1 |
sea_surface_temperature_retrieval_type | Type of retrieval used for the primary SST | [none] |
alt_sst_retrieval_type | Type of retrieval used for the alternate SST retrieval | [none] |
uncertainty_random | Uncertainty from errors likely to be uncorrelated between SSTs | kelvin |
uncertainty_correlated | Uncertainty from errors likely to be correlated over synoptic scales | kelvin |
uncertainty_systematic | Uncertainty from errors likely to be correlated over large scales | kelvin |
uncertainty_correlated_time_and_depth_adjustment | Time and depth adjustment uncertainty | kelvin |
uncertainty_random_alt | Uncertainty in alternative SST retrieval from errors likely to be uncorrelated between SSTs | kelvin |
uncertainty_correlated_alt | Uncertainty in alternative SST retrieval from errors likely to be correlated over synoptic scales | kelvin |
uncertainty_systematic_alt | Uncertainty in alternative SST retrieval from errors likely to be correlated over large scales | kelvin |
sst_sensitivity | Sensitivity of the retrieval to actual changes in sea surface temperature | K/K |
empirical_adjustment | Adjustment, based on comparison to in situ data | kelvin |
Full variable metadata#
sea_surface_temperature#
Field | Value |
---|---|
long_name | sea surface skin temperature |
standard_name | sea_surface_skin_temperature |
units | kelvin |
add_offset | 273.15 |
scale_factor | 0.01 |
valid_min | -200 |
valid_max | 5000 |
comment | Temperature of the skin of the ocean; total uncertainty = sqrt(uncertainty_systematic^2+uncertainty_correlated^2+uncertainty_random^2) |
references | http://www.esa-sst-cci.org |
source | AVHRR12_G-ESACCI-L1C-v1 |
depth | 10 micrometres |
orig_data_type | int16 |
fill_value | -32768 |
size | 971429760000 |
shape | 37478, 3600, 7200 |
chunk_sizes | 1, 90, 180 |
file_chunk_sizes | 1, 90, 180 |
data_type | int16 |
dimensions | time, lat, lon |
file_dimensions | time, lat, lon |
sea_surface_temperature_depth#
Field | Value |
---|---|
long_name | sea surface temperature at 0.2 m |
standard_name | sea_water_temperature |
units | kelvin |
add_offset | 273.15 |
scale_factor | 0.01 |
valid_min | -200 |
valid_max | 5000 |
comment | Temperature of the ocean at 20 cm depth; total uncertainty = sqrt(uncertainty_systematic^2+uncertainty_correlated^2+uncertainty_random^2+uncertainty_correlated_time_and_depth_adjustment^2) |
references | http://www.esa-sst-cci.org |
source | AVHRR12_G-ESACCI-L1C-v1 |
depth | 0.2 metre |
orig_data_type | int16 |
fill_value | -32768 |
size | 971429760000 |
shape | 37478, 3600, 7200 |
chunk_sizes | 1, 90, 180 |
file_chunk_sizes | 1, 90, 180 |
data_type | int16 |
dimensions | time, lat, lon |
file_dimensions | time, lat, lon |
sea_surface_temperature_depth_anomaly#
Field | Value |
---|---|
long_name | sea surface temperature anomaly at 0.2 m |
standard_name | sea_water_temperature_anomaly |
units | kelvin |
add_offset | 0.0 |
scale_factor | 0.01 |
valid_min | -4000 |
valid_max | 4000 |
comment | Temperature of the ocean at 20 cm depth; total uncertainty = sqrt(uncertainty_systematic^2+uncertainty_correlated^2+uncertainty_random^2+uncertainty_correlated_time_and_depth_adjustment^2) |
references | http://www.esa-sst-cci.org |
source | AVHRR12_G-ESACCI-L1C-v1 |
depth | 0.2 metre |
orig_data_type | int16 |
fill_value | -32768 |
size | 971429760000 |
shape | 37478, 3600, 7200 |
chunk_sizes | 1, 90, 180 |
file_chunk_sizes | 1, 90, 180 |
data_type | int16 |
dimensions | time, lat, lon |
file_dimensions | time, lat, lon |
sst_dtime#
Field | Value |
---|---|
long_name | time difference from reference time |
units | seconds |
add_offset | 0.0 |
scale_factor | 1.0 |
valid_min | -43200 |
valid_max | 43200 |
comment | time plus sst_dtime gives seconds after 1981-01-01 00:00:00 |
orig_data_type | int32 |
fill_value | -2147483648 |
size | 971429760000 |
shape | 37478, 3600, 7200 |
chunk_sizes | 1, 90, 180 |
file_chunk_sizes | 1, 90, 180 |
data_type | int32 |
dimensions | time, lat, lon |
file_dimensions | time, lat, lon |
sst_depth_dtime#
Field | Value |
---|---|
long_name | time difference from reference time |
units | seconds |
add_offset | 0.0 |
scale_factor | 1.0 |
valid_min | -43200 |
valid_max | 43200 |
comment | time plus sst_depth_dtime gives seconds after 1981-01-01 00:00:00 |
orig_data_type | int32 |
fill_value | -2147483648 |
size | 971429760000 |
shape | 37478, 3600, 7200 |
chunk_sizes | 1, 90, 180 |
file_chunk_sizes | 1, 90, 180 |
data_type | int32 |
dimensions | time, lat, lon |
file_dimensions | time, lat, lon |
sses_bias#
Field | Value |
---|---|
_Unsigned | false |
long_name | SSES bias estimate |
units | kelvin |
add_offset | 0.0 |
scale_factor | 0.01 |
valid_min | -127 |
valid_max | 127 |
comment | Populated with zeroes |
orig_data_type | uint8 |
fill_value | -128 |
size | 971429760000 |
shape | 37478, 3600, 7200 |
chunk_sizes | 1, 90, 180 |
file_chunk_sizes | 1, 90, 180 |
data_type | uint8 |
dimensions | time, lat, lon |
file_dimensions | time, lat, lon |
sses_standard_deviation#
Field | Value |
---|---|
_Unsigned | false |
long_name | SSES standard deviation |
units | kelvin |
add_offset | 1.27 |
scale_factor | 0.01 |
valid_min | -127 |
valid_max | 127 |
comment | Uncertainty information is contained in the variables uncertainty_systematic, uncertainty_correlated, and uncertainty_random |
orig_data_type | uint8 |
fill_value | -128 |
size | 971429760000 |
shape | 37478, 3600, 7200 |
chunk_sizes | 1, 90, 180 |
file_chunk_sizes | 1, 90, 180 |
data_type | uint8 |
dimensions | time, lat, lon |
file_dimensions | time, lat, lon |
sea_surface_temperature_total_uncertainty#
Field | Value |
---|---|
long_name | Total uncertainty in sea_surface_temperature |
units | kelvin |
add_offset | 0.0 |
scale_factor | 0.001 |
valid_min | 0 |
valid_max | 5000 |
comment | Total uncertainty in each sea_surface_temperature data point |
orig_data_type | int16 |
fill_value | -32768 |
size | 971429760000 |
shape | 37478, 3600, 7200 |
chunk_sizes | 1, 90, 180 |
file_chunk_sizes | 1, 90, 180 |
data_type | int16 |
dimensions | time, lat, lon |
file_dimensions | time, lat, lon |
sea_surface_temperature_depth_total_uncertainty#
Field | Value |
---|---|
long_name | Total uncertainty in sea_surface_temperature_depth |
units | kelvin |
add_offset | 0.0 |
scale_factor | 0.001 |
valid_min | 0 |
valid_max | 5000 |
comment | Total uncertainty in each sea_surface_temperature_depth data point |
orig_data_type | int16 |
fill_value | -32768 |
size | 971429760000 |
shape | 37478, 3600, 7200 |
chunk_sizes | 1, 90, 180 |
file_chunk_sizes | 1, 90, 180 |
data_type | int16 |
dimensions | time, lat, lon |
file_dimensions | time, lat, lon |
depth_adjustment#
Field | Value |
---|---|
long_name | Adjustment to sea surface temperature at 0.2 m |
units | kelvin |
add_offset | 0.0 |
scale_factor | 0.01 |
valid_min | -1000 |
valid_max | 1000 |
comment | Add to sea_surface_temperature, if SST at 20cm at observation time is required |
orig_data_type | int16 |
fill_value | -32768 |
size | 971429760000 |
shape | 37478, 3600, 7200 |
chunk_sizes | 1, 90, 180 |
file_chunk_sizes | 1, 90, 180 |
data_type | int16 |
dimensions | time, lat, lon |
file_dimensions | time, lat, lon |
adjustment_alt#
Field | Value |
---|---|
long_name | Adjustment to alternative sea surface temperature retrieval |
units | kelvin |
add_offset | 0.0 |
scale_factor | 0.01 |
valid_min | -1000 |
valid_max | 1000 |
comment | Add to sea_surface_temperature, if alternative SST retrieval is required |
orig_data_type | int16 |
fill_value | -32768 |
size | 971429760000 |
shape | 37478, 3600, 7200 |
chunk_sizes | 1, 90, 180 |
file_chunk_sizes | 1, 90, 180 |
data_type | int16 |
dimensions | time, lat, lon |
file_dimensions | time, lat, lon |
l2p_flags#
Field | Value |
---|---|
flag_meanings | microwave land ice lake river spare views channels day |
long_name | L2P flags |
valid_min | 0 |
valid_max | 511 |
flag_masks | 1, 2, 4, 8, 16, 32, 64, 128, 256 |
comment | These flags are important to properly use the data |
orig_data_type | int16 |
fill_value | -32768 |
size | 971429760000 |
shape | 37478, 3600, 7200 |
chunk_sizes | 1, 90, 180 |
file_chunk_sizes | 1, 90, 180 |
data_type | int16 |
dimensions | time, lat, lon |
file_dimensions | time, lat, lon |
quality_level#
Field | Value |
---|---|
_Unsigned | false |
long_name | quality level of SST pixel |
valid_min | 0 |
flag_meanings | no_data bad_data worst_quality low_quality acceptable_quality best_quality |
comment | These are overall quality indicators and are used for all GHRSST SSTs |
valid_max | 5 |
flag_values | 0, 1, 2, 3, 4, 5 |
orig_data_type | uint8 |
fill_value | 0 |
size | 971429760000 |
shape | 37478, 3600, 7200 |
chunk_sizes | 1, 90, 180 |
file_chunk_sizes | 1, 90, 180 |
data_type | uint8 |
dimensions | time, lat, lon |
file_dimensions | time, lat, lon |
wind_speed#
Field | Value |
---|---|
_Unsigned | false |
long_name | 10m wind speed |
standard_name | wind_speed |
units | m s-1 |
add_offset | 12.7 |
scale_factor | 0.1 |
valid_min | -127 |
valid_max | 127 |
comment | Wind speeds sourced from ECMWF ERA Interim Reanalysis; wind speeds greater than 25.4 m/s are set to 25.4. |
references | http://www.esa-sst-cci.org |
source | ERA_INTERIM-ECMWF-WSP-v1.0 |
time_offset | 0.0 |
height | 10 m |
orig_data_type | uint8 |
fill_value | -128 |
size | 971429760000 |
shape | 37478, 3600, 7200 |
chunk_sizes | 1, 90, 180 |
file_chunk_sizes | 1, 90, 180 |
data_type | uint8 |
dimensions | time, lat, lon |
file_dimensions | time, lat, lon |
sea_surface_temperature_retrieval_type#
Field | Value |
---|---|
_Unsigned | false |
long_name | Type of retrieval used for the primary SST |
valid_min | 1 |
valid_max | 5 |
comment | 1. single view, two channel 2. single view, three channel 3. dual view, two channel 4. dual view, three channel 5. single view, 11 and 3.7 two channel |
flag_meanings | single_view_two_channel single_view_three_channel dual_view_two_channel dual_view_three_channel single_view_11_and_3.7_two_channel |
flag_values | 1, 2, 3, 4, 5 |
orig_data_type | uint8 |
fill_value | -128 |
size | 971429760000 |
shape | 37478, 3600, 7200 |
chunk_sizes | 1, 90, 180 |
file_chunk_sizes | 1, 90, 180 |
data_type | uint8 |
dimensions | time, lat, lon |
file_dimensions | time, lat, lon |
alt_sst_retrieval_type#
Field | Value |
---|---|
_Unsigned | false |
valid_min | 1 |
long_name | Type of retrieval used for the alternate SST retrieval |
valid_max | 5 |
comment | For ATSRs, adjustment gives D2 (most consistent through time series) when D3 is provided as best. For AVHRRs, adjustment provides N2 when N3 is best. Reason for providing an alternative: can then use N2 or D2 consistently for whole record i |
flag_meanings | single_view_two_channel single_view_three_channel dual_view_two_channel dual_view_three_channel single_view_11_and_3.7_two_channel |
flag_values | 1, 2, 3, 4, 5 |
orig_data_type | uint8 |
fill_value | -128 |
size | 971429760000 |
shape | 37478, 3600, 7200 |
chunk_sizes | 1, 90, 180 |
file_chunk_sizes | 1, 90, 180 |
data_type | uint8 |
dimensions | time, lat, lon |
file_dimensions | time, lat, lon |
uncertainty_random#
Field | Value |
---|---|
long_name | Uncertainty from errors likely to be uncorrelated between SSTs |
units | kelvin |
add_offset | 0.0 |
scale_factor | 0.001 |
valid_min | 0 |
valid_max | 5000 |
comment | Component of uncertainty that is uncorrelated between SSTs; can be combined with other uncertainty estimates to form a total uncertainty |
references | http://www.esa-sst-cci.org |
orig_data_type | int16 |
fill_value | -32768 |
size | 971429760000 |
shape | 37478, 3600, 7200 |
chunk_sizes | 1, 90, 180 |
file_chunk_sizes | 1, 90, 180 |
data_type | int16 |
dimensions | time, lat, lon |
file_dimensions | time, lat, lon |
uncertainty_correlated#
Field | Value |
---|---|
long_name | Uncertainty from errors likely to be correlated over synoptic scales |
units | kelvin |
add_offset | 0.0 |
scale_factor | 0.001 |
valid_min | 0 |
valid_max | 5000 |
comment | Component of uncertainty that is correlated over synoptic scales; can be combined with other uncertainty estimates to form a total uncertainty |
correlation_length_scale | 100 km |
correlation_time_scale | 1 day |
references | http://www.esa-sst-cci.org |
orig_data_type | int16 |
fill_value | -32768 |
size | 971429760000 |
shape | 37478, 3600, 7200 |
chunk_sizes | 1, 90, 180 |
file_chunk_sizes | 1, 90, 180 |
data_type | int16 |
dimensions | time, lat, lon |
file_dimensions | time, lat, lon |
uncertainty_systematic#
Field | Value |
---|---|
long_name | Uncertainty from errors likely to be correlated over large scales |
units | kelvin |
add_offset | 0.0 |
scale_factor | 0.001 |
valid_min | 0 |
valid_max | 5000 |
comment | Component of uncertainty that is correlated over large scales; can be combined with other uncertainty estimates to form a total uncertainty |
references | http://www.esa-sst-cci.org |
orig_data_type | int16 |
fill_value | -32768 |
size | 971429760000 |
shape | 37478, 3600, 7200 |
chunk_sizes | 1, 90, 180 |
file_chunk_sizes | 1, 90, 180 |
data_type | int16 |
dimensions | time, lat, lon |
file_dimensions | time, lat, lon |
uncertainty_correlated_time_and_depth_adjustment#
Field | Value |
---|---|
long_name | Time and depth adjustment uncertainty |
units | kelvin |
add_offset | 0.0 |
scale_factor | 0.001 |
valid_min | 0 |
valid_max | 5000 |
comment | Adjustment uncertainty; can be combined with other uncertainty estimates to form a total uncertainty |
references | http://www.esa-sst-cci.org |
correlation_length_scale | 100 km |
correlation_time_scale | 1 day |
orig_data_type | int16 |
fill_value | -32768 |
size | 971429760000 |
shape | 37478, 3600, 7200 |
chunk_sizes | 1, 90, 180 |
file_chunk_sizes | 1, 90, 180 |
data_type | int16 |
dimensions | time, lat, lon |
file_dimensions | time, lat, lon |
uncertainty_random_alt#
Field | Value |
---|---|
long_name | Uncertainty in alternative SST retrieval from errors likely to be uncorrelated between SSTs |
units | kelvin |
add_offset | 0.0 |
scale_factor | 0.001 |
valid_min | 0 |
valid_max | 5000 |
comment | Component of uncertainty in alternative SST retrieval that is uncorrelated between SSTs; can be combined with other uncertainty estimates to form a total uncertainty |
references | http://www.esa-sst-cci.org |
orig_data_type | int16 |
fill_value | -32768 |
size | 971429760000 |
shape | 37478, 3600, 7200 |
chunk_sizes | 1, 90, 180 |
file_chunk_sizes | 1, 90, 180 |
data_type | int16 |
dimensions | time, lat, lon |
file_dimensions | time, lat, lon |
uncertainty_correlated_alt#
Field | Value |
---|---|
long_name | Uncertainty in alternative SST retrieval from errors likely to be correlated over synoptic scales |
units | kelvin |
add_offset | 0.0 |
scale_factor | 0.001 |
valid_min | 0 |
valid_max | 5000 |
comment | Component of uncertainty in alternative SST retrieval that is correlated over synoptic scales; can be combined with other uncertainty estimates to form a total uncertainty |
correlation_length_scale | 100 km |
correlation_time_scale | 1 day |
references | http://www.esa-sst-cci.org |
orig_data_type | int16 |
fill_value | -32768 |
size | 971429760000 |
shape | 37478, 3600, 7200 |
chunk_sizes | 1, 90, 180 |
file_chunk_sizes | 1, 90, 180 |
data_type | int16 |
dimensions | time, lat, lon |
file_dimensions | time, lat, lon |
uncertainty_systematic_alt#
Field | Value |
---|---|
long_name | Uncertainty in alternative SST retrieval from errors likely to be correlated over large scales |
units | kelvin |
add_offset | 0.0 |
scale_factor | 0.001 |
valid_min | 0 |
valid_max | 5000 |
comment | Component of uncertainty in alternative SST retrieval that is correlated over large scales; can be combined with other uncertainty estimates to form a total uncertainty |
references | http://www.esa-sst-cci.org |
orig_data_type | int16 |
fill_value | -32768 |
size | 971429760000 |
shape | 37478, 3600, 7200 |
chunk_sizes | 1, 90, 180 |
file_chunk_sizes | 1, 90, 180 |
data_type | int16 |
dimensions | time, lat, lon |
file_dimensions | time, lat, lon |
sst_sensitivity#
Field | Value |
---|---|
long_name | Sensitivity of the retrieval to actual changes in sea surface temperature |
units | K/K |
add_offset | 0.0 |
scale_factor | 0.001 |
valid_min | 0 |
valid_max | 1100 |
comment | Sensitivity of the retrieval to actual changes in sea surface temperature |
orig_data_type | int16 |
fill_value | -32768 |
size | 971429760000 |
shape | 37478, 3600, 7200 |
chunk_sizes | 1, 90, 180 |
file_chunk_sizes | 1, 90, 180 |
data_type | int16 |
dimensions | time, lat, lon |
file_dimensions | time, lat, lon |
empirical_adjustment#
Field | Value |
---|---|
long_name | Adjustment, based on comparison to in situ data |
units | kelvin |
add_offset | 0.0 |
scale_factor | 0.01 |
valid_min | -1000 |
valid_max | 1000 |
comment | If not applied, fill with zeros to indicate independence from in situ |
orig_data_type | int16 |
fill_value | -32768 |
size | 971429760000 |
shape | 37478, 3600, 7200 |
chunk_sizes | 1, 90, 180 |
file_chunk_sizes | 1, 90, 180 |
data_type | int16 |
dimensions | time, lat, lon |
file_dimensions | time, lat, lon |
Full dataset metadata#
Field | Value |
---|---|
title | ESA Sea Surface Temperature Climate Change Initiative (SST_cci): Advanced Very High Resolution Radiometer (AVHRR) Level 3 Uncollated (L3U) Climate Data Record, version 2.1 |
references | http://www.esa-sst-cci.org |
history | Created using GBCS library v2.9.1 |
product_version | 2-1 |
uuid | 42f7230ab55641cdac1bba84eabd446a |
source | AVHRR12_G-ESACCI-L1C-v1, ERA_INTERIM-ECMWF-WSP-v1.0 |
project | Climate Change Initiative - European Space Agency |
comment | For information about uncertainty estimates see the comment attributes to the sea_surface_temperature and sea_surface_temperature_depth variables |
processing_level | L3U |
ecv | SST |
institute | ESACCI_SST |
data_type | SSTskin |
abstract | This v2.1 SST_cci Advanced Very High Resolution Radiometer (AVHRR) level 3 uncollated data (L3U) Climate Data Record (CDR) consists of stable, low-bias sea surface temperature (SST) data from the AVHRR series of satellite instruments. It covers the period between 08/1981 and 12/2016. This L3U product provides these SST data on a 0.05 regular latitude-longitude grid with with a single orbit per file. The dataset has been produced as part of the European Space Agency (ESA) Climate Change Initiative Sea Surface Temperature project(ESA SST_cci). The data products from SST_cci accurately map the surface temperature of the global oceans over the period 1981 to 2016 using observations from many satellites. The data provide independently quantified SSTs to a quality suitable for climate research. This CDR Version 2.1 product supercedes the CDR Version 2.0 product. Data are made freely and openly available under a Creative Commons License by Attribution (CC By 4.0) https://creativecommons.org/licenses/by/4.0/ . When citing this dataset please also cite the associated data paper: Merchant, C.J., Embury, O., Bulgin, C.E., Block T., Corlett, G.K., Fiedler, E., Good, S.A., Mittaz, J., Rayner, N.A., Berry, D., Eastwood, S., Taylor, M., Tsushima, Y., Waterfall, A., Wilson, R., Donlon, C. Satellite-based time-series of sea-surface temperature since 1981 for climate applications, Scientific Data 6:223 (2019). http://doi.org/10.1038/s41597-019-0236-x |
publication_date | 2019-08-02T20:56:00 |
catalog_url | https://catalogue.ceda.ac.uk/uuid/42f7230ab55641cdac1bba84eabd446a |
sensor_id | AVHRR-2 |
platform_id | NOAA-12 |
product_string | AVHRR12_G |
cci_project | SST |