McIDAS achievements Compiled & Installed McIDAS-X v2008 Tested BOWTIE correction Enhanced MOD4 and MOD6 server code to reflect changes in v005 algorithms. Added ADDE server for MODIS AEROSOL Properties (MOD4), and MODIS CLOUD Properties (MOD6). Implemented and tested export to netCDF for Hyrax & THREDDS catalog server

ADDE server enhancements mcidas2008/src imgbowtie.c - new XRD command gennavblk.for - needed for IMGBOWTIE makefile - MODIS ADDE server modifications modx.h - SSEC 2008 version with mods modradir.cp - SSEC 2008 version modraget.cp - SSEC 2008 version mod3aget.cp - SSEC 2008 XRD version modiadir.cp - SSEC 2008 XRD version with mods modiaget.cp - SSEC 2008 XRD version with mods modladir.cp - SSEC 2008 XRD version modlaget.cp - SSEC 2008 XRD version modxadir.cp - SSEC 2007 version with mods modxaget.cp - SSEC 2007 version with mods kbxmodx.dlm - SSEC 2007 version with mods mcidas2008/data SATBAND - modifications for MODIS ADDE servers

Example ADDE server enhancements

Vxeos required enhancements Bow-tie correction fails on MODIS Swaths with missing scan lines -> centre location cannot be resolved (lat: -999 lon:-999) Task: check with Dominic if this can be fixed. Tertiary (L3B) MODIS products (NDVI,LST,CRL) are currently produced in non-IMAPP compatible HDF structure (see /eOsphere/bin for relevant scripts) Task: check with Dominic if this can be fixed.

Bow-tie correction (before and after)

What is the Bow-tie problem? Hyrax OPeNDAP URL, subsets HDF MOD02 using keyword constraints: ngic.mn:8080/opendap/data/hdf4/all_modis/MXD02/MOD02HKM.A hdf.ascii?Latitude[0:4:25][0:4:25] ngic.mn:8080/opendap/data/hdf4/all_modis/MXD02/MOD02HKM.A hdf.ascii?Latitude[0:4:25][0:4:25 Server returns the following dataset in ascii: MODIS_SWATH_Type_L1B.Geolocation Fields.Latitude[0], , , MODIS_SWATH_Type_L1B.Geolocation Fields.Latitude[1], , , MODIS_SWATH_Type_L1B.Geolocation Fields.Latitude[2], , , MODIS_SWATH_Type_L1B.Geolocation Fields.Latitude[3], , , MODIS_SWATH_Type_L1B.Geolocation Fields.Latitude[4], , , MODIS_SWATH_Type_L1B.Geolocation Fields.Latitude[5], , , MODIS_SWATH_Type_L1B.Geolocation Fields.Latitude[6], , , We expect a sort of records with decreasing latitudes, but we get unexpected results (in red).

Bow-tie correction (cont) (left: uncorrected, right: corrected)

Bow-tie limitations Daily image bow-tie correction on “raw” MOD02/MYD02 1km has no limitation. However, the HKM and QKM swaths are much larger than the required geo-location fields. The geo-location field (MXD03) dimensions restrict the image output dimensions as follows: OUTPUT RES = INPUT RES (lines -1 /elems -2) (MXD03)

How to automate in McIDAS? McIDAS Scheduler Scheduler calls so-called McBASIC scripts. McBASIC is the BASIC dialect used by McIDAS (Man Computer Interactive Data Access System), a sem- automatic environment for handling large amounts of visual and statistical data, particularly satellite imagery.BASIC Or use ‘cron’ but no visual displays.

McIDAS ICC-NGIC customizations Complete TMACOMC1.MCB – In creating daily composite of ‘raw’ aka full-swath TERRA/AQUA MODIS Create McBASIC script for weekly/monthly composite based on daily composite. Using FORM=CMIN conditional minimum to avoid cloudy pixel contamination.

Mcidas customizations Creating weekly composite of bowtie-corrected TERRA/MODIS and AQUA. We want to automate (because we are lazy) this process. Using IMGOPER command with keyword FORM=CMIN conditional minimum expression. Create Monthly composite of bowtie-corrected TERRA/MODIS and AQUA, which we again want to automate. Again using FORM=CMIN conditional minimum to avoid cloud contaminated pixels.

CMIN in TOA Reflectance CMIN min new conditional minimum; uses only the term in the equation with the lowest value greater than the specified minimum; if all terms are less than min, the new value is used (default=0 0) CMIN(0)=(0,-0.1, 0.3,0.1,5….)=0.1

Mcidas customizations Creating McBASIC script for routinely generating weekly composite of bowtie- corrected NDVI TERRA/MODIS and AQUA. We want to automate this process (because we are lazy). Using IMGOPER command with keyword FORM=CMAX conditional minimum expression. Same as above but also for Monthly composite from Weekly composite

CMAX in NDVI CMAX max new conditional maximum; uses only the term in the equation with the highest value less than the specified maximum; if all terms are greater than max, the new value is used (default= ). Theoretical range: -1 to +1 Biological range: -1 to +0.7 Observed range: -1 to >+1 CMAX(0.7)=(0,1, 0.3,0.8,0.5….)=0.5

Action list 1.Learn McIDAS: IMGBOWTIE, IMGOPER (with CMAX and CMIN), McBASIC, McIDAS Scheduler, Backup and File management 2.Solve vxeos incompatibilities (produce IMAPP compatible L3B products) by either: a)Adjust vxeos file HDF formatting of tertiary products (VI’s, Fire detection, etc.), or; b)Run IMAPP in parallel to vxeos 3.Sun glint issues with the NDVI are not observed to happen with other Direct Readout MODIS station(s) in Mongolia. Suggested solution: follow 2b to have redundancy in processing chains and products quality. 4.Complete McBASIC script for routinely generating weekly composite of bowtie-corrected NDVI TERRA/MODIS and AQUA