Supported ENVISAT Products |

## Level 2 ADS Tie Points Location & Aux. Data ( L ADS)

Fields of ENVISAT MER_RR__1P_ADSR_tie_pt Records

Index | Identifier | Field Type | Field Length | Description | Units
0 | `"dsr_time"` | MJD | 1 | Start time of the measurement | MJD
1 | `"attach_flag"` | UChar | 1 | Attachment Flag (set to 1 if all MDSRs corresponding to this ADSR are blank, set to zero otherwise) | flag
2 | `"lat_tie_pt"` | SLong | tiePointGridWidth | Latitude of the tie points WGS84, positive N | (1e-6) degrees
3 | `"long_tie_pt"` | SLong | tiePointGridWidth | Longitude of the tie points WGS84, Greenwich origin, positive E | (1e-6) degrees
4 | `"dem_alt_tie_pt"` | SLong | tiePointGridWidth | DEM altitude | m
5 | `"dem_rough"` | ULong | tiePointGridWidth | DEM roughness | m
6 | `"dem_lat_corrc"` | SLong | tiePointGridWidth | DEM latitude corrections | (1e-6) degrees
7 | `"dem_long_corrc"` | SLong | tiePointGridWidth | DEM longitude corrections | (1e-6) degrees
8 | `"sun_zen_ang"` | ULong | tiePointGridWidth | Sun zenith angles | (1e-6) degrees
9 | `"sun_azi_ang"` | SLong | tiePointGridWidth | Sun azimuth angles | (1e-6) degrees
10 | `"vw_zen_ang"` | ULong | tiePointGridWidth | Viewing zenith angles | (1e-6) degrees
11 | `"vw_azi_ang"` | SLong | tiePointGridWidth | Viewing azimuth angles | (1e-6) degrees
12 | `"zon_wind"` | SShort | tiePointGridWidth | Zonal winds | m*s-1
13 | `"meri_wind"` | SShort | tiePointGridWidth | Meridional winds | m*s-1
14 | `"atm_pres"` | UShort | tiePointGridWidth | Mean sea level pressures | hPa
15 | `"tot_ozone"` | UShort | tiePointGridWidth | Total ozone | DU
16 | `"rel_humid"` | UShort | tiePointGridWidth | Relative humidity | %