Medspiration â System Requirements Document - Data User Element

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Medspiration MED-SOC-RS-001_1 System Requirements Document Issue F Page Table, fig. Reference ID Text from reference documents SR entry lies. Should it straddle more than one input pixel, it will take a weighted average of all those input pixels with which it overlaps and which have the highest L2P confidence record Proximity_Confidence value amongst the overlapping pixels. Weights will be assigned based on the coverage an input pixel has over the output grid. 85 Rule 4.1d WP4-043 In the case of a larger pixel than the L4FND grid cell size, the output grid cell takes the value of the L2P pixel in which it L4A.0060 lies. 85 Rule 4.1e WP4-044 In the case where the output grid cell is covered by more than one L2P pixel, it will take the weighted average of all those L4A.0060 L2P pixels with which it overlaps and which have the highest L2P confidence record Proximity_Confidence value amongst the overlapping pixels. Weights will be assigned based on the coverage an input pixel has over the output grid. 85 WP4-045 There are other optimal methods for re-gridding data that may be investigated by the GHRSST-PP during the implementation of the GDS-v1.0 and may provide improvements over the simplistic method described here. 85 WP4-046 in most optimal analysis systems, the analysis itself will optimise the re-gridding of data although re-gridding prior to L4A.0090 L4A.0095 L4A.0080 interpolation provides a more straightforward processing system WP-ID4.2 Generate L4 SSTfnd data products (L4SSTfnd) 85 WP4-047 Bias correction of all input data to the analysis procedure is critical to obtaining a valid output (see for example Reynolds et L4A.0080 al, 2002). 85 WP4-048 The GDS will use the L2P SSES derived bias as a measure of the overall uncertainty associated with each input data L4A.0080 stream. 85 WP4-049 bias due to diurnal stratification and cool skin effects must also be accounted for using additional data. L4A.0054 85 WP4-050 Some satellite sensors provide a direct estimate of the SSTskin (AATSR) that must be adjusted to the SSTfnd. These data L4A.0054 can then be used in an OI procedure to derive complete global fields. WP4-051 it is expected that the bias correction strategy will evolve and an upgrade of this component of the GDS is expected. L4A.0090 86 WP4-052 L4FNDUHR data products will be generated for regions shown in Table 4.2.1. Other areas are expected in the future (e.g., L4A.0010 © 2004 SOC Page 168 of 193
Medspiration MED-SOC-RS-001_1 System Requirements Document Issue F Page Table, fig. Reference ID Text from reference documents SR entry 86 Table 4.2.1 European coastal seas) and will be described in Table 4.2.1 when operations begin. WP4-053 Name : Mediterranean, Regional project : Medspiration (EU-RDAC), Area : 30°N to 46°N and from 6°W to 36.5°E at 2 km spatial resolution SYS.0081 86 WP4-054 The GDS analysis scheme used to generate L4FND data products must: NASR 86 WP4-055 • Provide a daily global coverage combined SSTfnd product that builds on the synergy between complementary SST data NASR streams having a grid cell size of 1/12° latitude x longitude (GDS-v1.0), 86 WP4-056 • Provide error estimates for each analysed grid cell, L4A.0051 86 WP4-057 • Account for differences in spatial and temporal sampling characteristics of each data stream L4A.0052 86 WP4-058 • Account for gaps in coverage due to the presence of cloud, rain or lack of input L2P data L4A.0053 86 WP4-059 • Account for SST diurnal variability both in space and time L4A.0054 86 WP4-060 • Provide a measure of diurnal variability within the data product time domain to accompany the SSTfnd estimate that can also provide a best estimate of the skin temperature of the ocean (SSTskin) for each grid cell 86 WP4-061 the analysis scheme described by Reynolds et al. (2002) may be modified to cater for high resolution spatial scales of L4A.0040 L4A.0055 L4A.0095 SST. 86 WP4-062 Appropriate spatial de-correlation length scales must be derived by the GHRSST-PP RDAC projects and close interaction L4A.0095 with the GHRSST-PP Science Team. 86 WP4-063 All parameters associated with the operation of the L4SSTfnd analysis scheme should be stored in a L4SSTfnd L4A.0035 configuration file allowing for their easy editing and adjustment 86 WP4-064 it is expected that alternative methods to the scheme proposed by Reynolds et al (2002) will be explored and compared L4A.0090 during the GHRSST-PP within the framework of the GODAE inter-comparison project. WP-ID4.3 Generate L4 diurnal variation data fields 86 WP4-065 Diurnal variation data fields form part of each L4 data product and are designed to enable a user to estimate the magnitude L4A.0055 © 2004 SOC Page 169 of 193
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Medspiration â System Requirements Document - Data User Element

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Medspiration â System Requirements Document - Data User Element