Daily execution

    sequenceDiagram
    participant Cron as Scheduled run
    participant Orch as run_mur_pipeline.py
    participant Cont as Containers
    participant Store as Storage

    Cron->>Orch: Execute with --config

    Orch->>Orch: Resolve run day and<br/>NRT / REA boundary

    loop For each analysis day in the window

        Orch->>Orch: Mode for this day<br/>NRT if newer than boundary, else REA

        rect rgb(200, 220, 255)
            Note over Orch,Cont: 1. LAND / ICE MASK
            Orch->>Cont: mur-landice, explicit file flags
            Cont->>Cont: Fetch OSI-SAF ice<br/>(walk back if unavailable)
            Cont->>Store: Masks and ice points<br/>at both grid resolutions
        end

        rect rgb(220, 255, 200)
            Note over Orch,Store: 2. BUOYS (+/- 3 day window)
            Orch->>Cont: mur-iquam, year / doy / mode
            Cont->>Store: Binary buoy observations
        end

        rect rgb(255, 240, 200)
            Note over Orch,Store: 3. L2P SENSORS (+/- 2 day window)
            loop For each sensor, for each day in window
                alt Output exists and past stability latency
                    Orch->>Store: Keep existing file
                else Still in flux
                    Orch->>Cont: mur-l2p with granule manifest
                    Cont->>Store: Binary observation bundle
                end
            end
        end

        rect rgb(255, 220, 220)
            Note over Orch,Cont: 4. MRVA ANALYSIS
            alt Product exists and REA mode
                Orch->>Store: Keep existing product
            else Missing, or NRT mode
                Orch->>Orch: Build sensor-inputs manifest<br/>resolve prior coefficient
                Orch->>Cont: mur-mrva, explicit flags + manifest
                Cont->>Store: Coefficients and NetCDF product
            end
        end
    end

    rect rgb(235, 235, 235)
        Note over Orch,Store: 5. PURGE
        Orch->>Store: Drop granules outside the rolling window
    end

    Orch->>Cron: Exit with per-stage summary
    

    sequenceDiagram
        participant Cron as Daily Cron Job
        participant Script as nrtMRVA.py
        participant MATLAB as MATLAB Runtime
        participant Storage as File System

        Note over Cron,Storage: Script runs daily at scheduled time

        Cron->>Script: Execute nrtMRVA.py

        Script->>Script: Calculate date windows<br/>(scanLatency to nrtLatency)

        Note over Script: Prepare working directories<br/>Clean /nas6/nrtMRVA<br/>Copy code from /home/tmchin/cyc4<br/>Compile MRVA

        loop For each year in range
            loop For each day in year range

                Script->>Script: Determine mode<br/>if day > (T-reaLatency): NRT<br/>else: REA

                Note over Script: Mode determined:<br/>NRT (realtime=1) or REA (realtime=0)

                rect rgb(200, 220, 255)
                    Note over Script,MATLAB: 1. ICE & LANDMASK FILES
                    Script->>MATLAB: Generate makeice*.m script
                    MATLAB->>Storage: Create ice/land files<br/>(p01 and p011 resolutions)
                    MATLAB-->>Script: Complete
                end

                rect rgb(220, 255, 200)
                    Note over Script,Storage: 2. BUOY FILES (±3 day window)
                    loop For each day offset (-3 to +3)
                        Script->>Script: Check file stability<br/>(buoystablat = 2 days)

                        alt File exists AND (stable OR NRT mode)
                            Script->>Storage: Keep existing file
                        else Need to download
                            Script->>MATLAB: Generate makeiquam*.m script
                            MATLAB->>Storage: Download/create IQUAM buoy file
                            MATLAB-->>Script: Complete
                        end
                    end
                end

                rect rgb(255, 240, 200)
                    Note over Script,Storage: 3. L2P SENSOR FILES (±2 day window)
                    loop For each sensor (AMSR2R, MODISA, MODIST, etc.)
                        loop For each day offset (-2 to +2)
                            Script->>Script: Check file stability<br/>(sensor-specific stablat)

                            alt File exists AND stable
                                Script->>Storage: Keep existing .bic.gz file
                            else Need to download
                                Script->>MATLAB: Generate makebiccmd*.m script
                                MATLAB->>Storage: Download/process L2P to BIC
                                MATLAB-->>Script: Complete
                            end
                        end
                    end
                end

                rect rgb(255, 220, 220)
                    Note over Script,MATLAB: 4. MRVA ANALYSIS

                    alt MUR file exists AND REA mode
                        Script->>Storage: KEEP existing MUR product<br/>(Final run - don't reprocess)
                    else MUR missing OR NRT mode
                        Script->>MATLAB: Create MRVAcmd.m<br/>realtime flag set
                        MATLAB->>MATLAB: Run mrva4com.m<br/>(full MRVA processing)
                        MATLAB->>Storage: Write MUR product<br/>(.nc.bz2 file)
                        MATLAB-->>Script: Complete (log to MRVA_YYYY_DDD.log)
                    end
                end

            end
        end

        Script->>Cron: Exit (keep working dirs for debugging)