|Description of change|
|First issue of the document.|
|v2 31/08/2007||Full document||Update to reflect start of Metop/AVHRR Level 1b.|
|v2A 24/06/2008||Appendix G (mainly)|| Appendix G.5:
- Table added summarising record contents for each product format version.
- Table for MDR, items ANGULAR_RELATIONS & EARTH_LOCATIONS: Descriptions amended to also specify that points 5 to 2045 used when using every 20th point.
Other general layout improvements and typo corrections.
|v2B 17/07/2008||Sections 4, 6, 7|| Section 4: Fig. 4-1 updated and note added. In Sec. 4.4.3 "NDVI
information" replaced by "vegetation products".
Section 6: LRPT bullet in Sec. 6.1.1 deleted (because LRPT not functional). Table 6-1 row for "NOAA-AVHRR raw data format" deleted. Table 6-5 MDR-1B row: added note on pixel number differences for Metop/NOAA.
Section 7: Third bullet in Sec. 7.1.1 item 1 replaced with new sentence. Sec. 7.1.2 updated.
Several typos corrected.
|v2C 25/08/2008||Section 4 (mainly)|| Section 4.1: List of satellites extended.
Section 4.1.2: Section and Table 4-2 titles changed from “Scanning…” to “Nominal scanning…”. GAC gap value between pixels corrected from 3.3 to 2.2 km.
Figure 4-1 corrected for Calibration output arrow.
Section 126.96.36.199: A1 albedo “computed” not “estimated”.
Section 8: Deleted “planned” before Cal/Val activities.
|v2D 29/08/2008||Section 4||Section 4.1: Sentence “The AVHRR/2 version…” brought up to date.|
|v3 14/09/2009||Full document||Sec. 2: Added reference RD24.
Sec. 3: Document version numbers updated.
Sec. 4.1.2: Added graphic showing GAC/LAC footprints.
Sec. 5: EPSView description replaced by brief text on generic tools. (Also minor associated updates to Sec. 2 & 6.)
Sec. 6.3.4: Added description of how to derive radiances from MDR data using factors. Improved equation and its description.
Sec. 11: In MDR-1B table: Correction to units for Scene_Radiances as given under Description. Also, values of Dim1, Type and Type Size corrected for Frame_Indicator & Time_Code in order to agree with PFS. In following bitfield description tables, updates for Instrument_Invalid_Analog_Word_Flag (totally wrong before), Time_Code, Calibration_Quality.
Document restructured – App. F & G renamed as Sec. 10 & 11, and common appendices removed to keep as separate document.
Other general typo corrections, and minor text and hyperlink amendments.
|v3A 21/01/2011||Sections 1 and 3||Sec. 1: Added mention of vegetation (NDVI) trial dissemination.
Sec. 3: Configuration History updates – addition of PPF software versions.
Other minor text updates and corrections, and hyperlink updates.