示例#1
0
/** For files of the form ??_yyyymmdd.nc. They are assumed to have "time" 
 * variable.
 */
void reader_rads_standard(char* fname, int fid, obsmeta* meta, model* m, observations* obs)
{
    double mindepth = MINDEPTH_DEF;
    char* addname = NULL;
    int ncid;
    int dimid_nobs;
    size_t nobs_local;
    int varid_lon, varid_lat, varid_pass, varid_sla, varid_time, varid_add;
    double* lon;
    double* lat;
    int* pass;
    double* sla;
    double* time;
    double error_std;
    double* add = NULL;
    size_t tunits_len;
    char* tunits;
    double tunits_multiple, tunits_offset;
    char* basename;
    char instname[3];
    int mvid;
    float** depth;
    int i, ktop;

    for (i = 0; i < meta->npars; ++i) {
        if (strcasecmp(meta->pars[i].name, "MINDEPTH") == 0) {
            if (!str2double(meta->pars[i].value, &mindepth))
                enkf_quit("observation prm file: can not convert MINDEPTH = \"%s\" to double\n", meta->pars[i].value);
        } else if (strcasecmp(meta->pars[i].name, "ADD") == 0) {
            addname = meta->pars[i].value;
            enkf_printf("        ADDING \"%s\"\n", addname);
        } else
            enkf_quit("unknown PARAMETER \"%s\"\n", meta->pars[i].name);
    }
    enkf_printf("        MINDEPTH = %.0f\n", mindepth);

    ncw_open(fname, NC_NOWRITE, &ncid);

    ncw_inq_dimid(ncid, "nobs", &dimid_nobs);
    ncw_inq_dimlen(ncid, dimid_nobs, &nobs_local);
    enkf_printf("        nobs = %u\n", (unsigned int) nobs_local);

    if (nobs_local == 0) {
        ncw_close(ncid);
        return;
    }

    ncw_inq_varid(ncid, "lon", &varid_lon);
    lon = malloc(nobs_local * sizeof(double));
    ncw_get_var_double(ncid, varid_lon, lon);

    ncw_inq_varid(ncid, "lat", &varid_lat);
    lat = malloc(nobs_local * sizeof(double));
    ncw_get_var_double(ncid, varid_lat, lat);

    ncw_inq_varid(ncid, "pass", &varid_pass);
    pass = malloc(nobs_local * sizeof(int));
    ncw_get_var_int(ncid, varid_pass, pass);

    ncw_inq_varid(ncid, "sla", &varid_sla);
    sla = malloc(nobs_local * sizeof(double));
    ncw_get_var_double(ncid, varid_sla, sla);
    ncw_get_att_double(ncid, varid_sla, "error_std", &error_std);
    enkf_printf("        error_std = %3g\n", error_std);

    if (addname != NULL) {
        ncw_inq_varid(ncid, addname, &varid_add);
        add = malloc(nobs_local * sizeof(double));
        ncw_get_var_double(ncid, varid_add, add);
    }

    ncw_inq_varid(ncid, "time", &varid_time);
    time = malloc(nobs_local * sizeof(double));
    ncw_get_var_double(ncid, varid_time, time);
    ncw_inq_attlen(ncid, varid_time, "units", &tunits_len);
    tunits = calloc(tunits_len + 1, 1);
    ncw_get_att_text(ncid, varid_time, "units", tunits);

    ncw_close(ncid);

    tunits_convert(tunits, &tunits_multiple, &tunits_offset);

    basename = strrchr(fname, '/');
    if (basename == NULL)
        basename = fname;
    else
        basename += 1;
    strncpy(instname, basename, 2);
    instname[2] = 0;

    mvid = model_getvarid(m, obs->obstypes[obstype_getid(obs->nobstypes, obs->obstypes, meta->type, 1)].varnames[0], 1);
    ktop = grid_gettoplayerid(model_getvargrid(m, mvid));
    depth = model_getdepth(m, mvid, 1);

    for (i = 0; i < (int) nobs_local; ++i) {
        observation* o;
        obstype* ot;

        obs_checkalloc(obs);
        o = &obs->data[obs->nobs];

        o->product = st_findindexbystring(obs->products, meta->product);
        assert(o->product >= 0);
        o->type = obstype_getid(obs->nobstypes, obs->obstypes, meta->type, 1);
        ot = &obs->obstypes[o->type];
        o->instrument = st_add_ifabscent(obs->instruments, instname, -1);
        o->id = obs->nobs;
        o->fid = fid;
        o->batch = pass[i];
        o->value = sla[i];
        if (add != NULL)
            o->value += add[i];
        o->std = error_std;
        o->lon = lon[i];
        o->lat = lat[i];
        o->depth = 0.0;
        o->status = model_xy2fij(m, mvid, o->lon, o->lat, &o->fi, &o->fj);
        if (!obs->allobs && o->status == STATUS_OUTSIDEGRID)
            continue;
        o->fk = (double) ktop;
        o->model_depth = (isnan(o->fi + o->fj)) ? NaN : depth[(int) (o->fj + 0.5)][(int) (o->fi + 0.5)];
        o->date = time[i] * tunits_multiple + tunits_offset;
        if (o->status == STATUS_OK && o->model_depth < mindepth)
            o->status = STATUS_SHALLOW;
        if ((o->status == STATUS_OK) && (o->lon <= ot->xmin || o->lon >= ot->xmax || o->lat <= ot->ymin || o->lat >= ot->ymax))
            o->status = STATUS_OUTSIDEOBSDOMAIN;

        o->aux = -1;

        obs->nobs++;
    }

    if (add != NULL)
        free(add);
    free(lon);
    free(lat);
    free(pass);
    free(sla);
    free(tunits);
    free(time);
}
示例#2
0
void reader_windsat_standard(char* fname, int fid, obsmeta* meta, model* m, observations* obs)
{
    int ncid;
    int dimid_nobs;
    size_t nobs_local;
    int varid_lon, varid_lat, varid_sst, varid_error, varid_time;
    double* lon;
    double* lat;
    double* sst;
    double* error_std;
    double* time;
    int year, month, day;
    char tunits[MAXSTRLEN];
    size_t tunits_len;
    double tunits_multiple, tunits_offset;
    char* basename;
    int mvid;
    float** depth;
    int ktop;
    int i;

    for (i = 0; i < meta->npars; ++i)
        enkf_quit("unknown PARAMETER \"%s\"\n", meta->pars[i].name);

    basename = strrchr(fname, '/');
    if (basename == NULL)
        basename = fname;
    else
        basename += 1;

    ncw_open(fname, NC_NOWRITE, &ncid);

    ncw_inq_dimid(ncid, "nobs", &dimid_nobs);
    ncw_inq_dimlen(ncid, dimid_nobs, &nobs_local);
    enkf_printf("        nobs = %u\n", (unsigned int) nobs_local);

    if (nobs_local == 0) {
        ncw_close(ncid);
        return;
    }

    ncw_inq_varid(ncid, "lon", &varid_lon);
    lon = malloc(nobs_local * sizeof(double));
    ncw_get_var_double(ncid, varid_lon, lon);

    ncw_inq_varid(ncid, "lat", &varid_lat);
    lat = malloc(nobs_local * sizeof(double));
    ncw_get_var_double(ncid, varid_lat, lat);

    ncw_inq_varid(ncid, "sst", &varid_sst);
    sst = malloc(nobs_local * sizeof(double));
    ncw_get_var_double(ncid, varid_sst, sst);

    ncw_inq_varid(ncid, "error", &varid_error);
    error_std = malloc(nobs_local * sizeof(double));
    ncw_get_var_double(ncid, varid_error, error_std);

    ncw_inq_varid(ncid, "age", &varid_time);
    time = malloc(nobs_local * sizeof(double));
    ncw_get_var_double(ncid, varid_time, time);
    ncw_inq_attlen(ncid, varid_time, "units", &tunits_len);
    ncw_get_att_text(ncid, varid_time, "units", tunits);
    basename[16] = 0;
    if (!str2int(&basename[14], &day))
        enkf_quit("WindSat reader: could not convert file name \"%s\" to date", fname);
    basename[14] = 0;
    if (!str2int(&basename[12], &month))
        enkf_quit("WindSat reader: could not convert file name \"%s\" to date", fname);
    basename[12] = 0;
    if (!str2int(&basename[8], &year))
        enkf_quit("WindSat reader: could not convert file name \"%s\" to date", fname);
    snprintf(&tunits[tunits_len], MAXSTRLEN - tunits_len, " since %4d-%02d-%02d", year, month, day);

    ncw_close(ncid);

    tunits_convert(tunits, &tunits_multiple, &tunits_offset);

    mvid = model_getvarid(m, obs->obstypes[obstype_getid(obs->nobstypes, obs->obstypes, meta->type, 1)].varnames[0], 1);
    ktop = grid_gettoplayerid(model_getvargrid(m, mvid));
    depth = model_getdepth(m, mvid, 0);

    for (i = 0; i < (int) nobs_local; ++i)
        if (time[i] != 0.0)
            break;
    if (i == (int) nobs_local)
        for (i = 0; i < (int) nobs_local; ++i)
            time[i] = 0.5;

    for (i = 0; i < (int) nobs_local; ++i) {
        observation* o;
        obstype* ot;

        obs_checkalloc(obs);
        o = &obs->data[obs->nobs];

        o->product = st_findindexbystring(obs->products, meta->product);
        assert(o->product >= 0);
        o->type = obstype_getid(obs->nobstypes, obs->obstypes, meta->type, 1);
        ot = &obs->obstypes[o->type];
        o->instrument = st_add_ifabscent(obs->instruments, "WindSat", -1);
        o->id = obs->nobs;
        o->fid = fid;
        o->batch = 0;
        o->value = sst[i];
        o->std = error_std[i];
        o->lon = lon[i];
        o->lat = lat[i];
        o->depth = 0.0;
        o->fk = (double) ktop;
        o->status = model_xy2fij(m, mvid, o->lon, o->lat, &o->fi, &o->fj);
        if (!obs->allobs && o->status == STATUS_OUTSIDEGRID)
            continue;
        if ((o->status == STATUS_OK) && (o->lon <= ot->xmin || o->lon >= ot->xmax || o->lat <= ot->ymin || o->lat >= ot->ymax || o->depth <= ot->zmin || o->depth >= ot->zmax))
            o->status = STATUS_OUTSIDEOBSDOMAIN;
        o->model_depth = (depth == NULL || isnan(o->fi + o->fj)) ? NaN : depth[(int) (o->fj + 0.5)][(int) (o->fi + 0.5)];
        o->date = time[i] * tunits_multiple + tunits_offset;
        o->aux = -1;

        obs->nobs++;
    }

    free(lon);
    free(lat);
    free(sst);
    free(error_std);
    free(time);
}
示例#3
0
void reader_mmt_standard(char* fname, int fid, obsmeta* meta, model* m, observations* obs)
{
    int ncid;
    int dimid_nprof, dimid_nz;
    size_t nprof, nz;
    int varid_lon, varid_lat, varid_z, varid_type;
    int varid_v = -1;
    double* lon;
    double* lat;
    double** z;
    double** v;
    double missval;
    double validmin = DBL_MAX;
    double validmax = -DBL_MAX;
    char* type;
    char buf[MAXSTRLEN];
    int len;
    int year, month, day;
    double tunits_multiple, tunits_offset;
    int mvid;
    int p, i;

    for (i = 0; i < meta->npars; ++i)
        enkf_quit("unknown PARAMETER \"%s\"\n", meta->pars[i].name);

    if (meta->nstds == 0)
        enkf_quit("ERROR_STD is necessary but not specified for product \"%s\"", meta->product);

    ncw_open(fname, NC_NOWRITE, &ncid);

    ncw_inq_dimid(fname, ncid, "N_PROF", &dimid_nprof);
    ncw_inq_dimlen(fname, ncid, dimid_nprof, &nprof);

    ncw_inq_dimid(fname, ncid, "N_LEVELS", &dimid_nz);
    ncw_inq_dimlen(fname, ncid, dimid_nz, &nz);
    enkf_printf("        # profiles = %u\n", (unsigned int) nprof);
    if (nprof == 0) {
        ncw_close(fname, ncid);
        return;
    }
    enkf_printf("        # z levels = %u\n", (unsigned int) nz);

    ncw_inq_varid(fname, ncid, "LONGITUDE", &varid_lon);
    lon = malloc(nprof * sizeof(double));
    ncw_get_var_double(fname, ncid, varid_lon, lon);

    ncw_inq_varid(fname, ncid, "LATITUDE", &varid_lat);
    lat = malloc(nprof * sizeof(double));
    ncw_get_var_double(fname, ncid, varid_lat, lat);

    ncw_inq_varid(fname, ncid, "PRES_BLUELINK", &varid_z);
    z = alloc2d(nprof, nz, sizeof(double));
    ncw_get_var_double(fname, ncid, varid_z, z[0]);

    if (strncmp(meta->type, "TEM", 3) == 0) {
        validmin = -2.0;
        validmax = 40.0;
        ncw_inq_varid(fname, ncid, "TEMP_BLUELINK", &varid_v);
    } else if (strncmp(meta->type, "SAL", 3) == 0) {
        validmin = 0;
        validmax = 50.0;
        ncw_inq_varid(fname, ncid, "PSAL_BLUELINK", &varid_v);
    } else
        enkf_quit("observation type \"%s\" not handled for MMT product", meta->type);
    v = alloc2d(nprof, nz, sizeof(double));
    ncw_get_var_double(fname, ncid, varid_v, v[0]);
    ncw_get_att_double(fname, ncid, varid_v, "_FillValue", &missval);

    ncw_inq_varid(fname, ncid, "WMO_INST_TYPE", &varid_type);
    type = malloc(nprof * WMO_INSTSIZE);
    ncw_get_var_text(fname, ncid, varid_type, type);

    ncw_close(fname, ncid);

    strcpy(buf, fname);
    len = strlen(buf);
    buf[len - 10] = 0;          /* _mmt_qc.nc */
    if (!str2int(&buf[len - 12], &day))
        enkf_quit("MMT reader: could not convert file name \"%s\" to date", fname);
    buf[len - 12] = 0;
    if (!str2int(&buf[len - 14], &month))
        enkf_quit("MMT reader: could not convert file name \"%s\" to date", fname);
    buf[len - 14] = 0;
    if (!str2int(&buf[len - 18], &year))
        enkf_quit("MMT reader: could not convert file name \"%s\" to date", fname);
    snprintf(buf, MAXSTRLEN, "days since %4d-%02d-%02d", year, month, day);

    tunits_convert(buf, &tunits_multiple, &tunits_offset);

    mvid = model_getvarid(m, obs->obstypes[obstype_getid(obs->nobstypes, obs->obstypes, meta->type)].varname, 1);

    for (p = 0; p < (int) nprof; ++p) {
        char inststr[MAXSTRLEN];

        snprintf(inststr, MAXSTRLEN, "WMO%04u", type[p * WMO_INSTSIZE]);

        for (i = 0; i < (int) nz; ++i) {
            observation* o;
            obstype* ot;

            if (fabs(v[p][i] - missval) < EPS || v[p][i] < validmin || v[p][i] > validmax)
                continue;
            if (z[p][i] < 0.0)
                continue;

            obs_checkalloc(obs);
            o = &obs->data[obs->nobs];

            o->product = st_findindexbystring(obs->products, meta->product);
            assert(o->product >= 0);
            o->type = obstype_getid(obs->nobstypes, obs->obstypes, meta->type);
            assert(o->type >= 0);
            ot = &obs->obstypes[o->type];
            o->instrument = st_add_ifabscent(obs->instruments, inststr, -1);
            o->id = obs->nobs;
            o->fid = fid;
            o->batch = p;
            o->value = v[p][i];
            o->std = 0.0;
            o->lon = lon[p];
            o->lat = lat[p];
            o->depth = z[p][i];
            o->status = model_xy2fij(m, mvid, o->lon, o->lat, &o->fi, &o->fj);
            if (!obs->allobs && o->status == STATUS_OUTSIDEGRID)
                break;
            if (o->status == STATUS_OK)
                o->status = model_z2fk(m, mvid, o->fi, o->fj, o->depth, &o->fk);
            else
                o->fk = NaN;
            if ((o->status == STATUS_OK) && (o->lon <= ot->xmin || o->lon >= ot->xmax || o->lat <= ot->ymin || o->lat >= ot->ymax || o->depth <= ot->zmin || o->depth >= ot->zmax))
                o->status = STATUS_OUTSIDEOBSDOMAIN;
            o->date = tunits_offset + 0.5;
            o->aux = -1;

            obs->nobs++;
        }
    }

    free(lon);
    free(lat);
    free2d(v);
    free2d(z);
    free(type);
}
示例#4
0
void reader_cars_standard(char* fname, int fid, obsmeta* meta, model* m, observations* obs)
{
    int ncid;
    int dimid_nprof, dimid_nz = -1;
    size_t nprof, nz;
    int varid_lon, varid_lat, varid_z, varid_type;
    int varid_v = -1;
    double* lon;
    double* lat;
    double** z;
    double** v;
    double missval, validmin, validmax;
    int* type;
    char buf[MAXSTRLEN];
    int len;
    int year, month, day;
    double tunits_multiple, tunits_offset;
    int mvid;
    float** depth;
    int p, i;

    for (i = 0; i < meta->npars; ++i)
        enkf_quit("unknown PARAMETER \"%s\"\n", meta->pars[i].name);

    if (meta->nstds == 0)
        enkf_quit("ERROR_STD is necessary but not specified for product \"%s\"", meta->product);

    ncw_open(fname, NC_NOWRITE, &ncid);
    ncw_inq_dimid(ncid, "nobs", &dimid_nprof);
    ncw_inq_dimlen(ncid, dimid_nprof, &nprof);
    enkf_printf("        # profiles = %u\n", (unsigned int) nprof);
    if (nprof == 0) {
        ncw_close(ncid);
        return;
    }

    if (ncw_dim_exists(ncid, "zt"))
        ncw_inq_dimid(ncid, "zt", &dimid_nz);
    else if (ncw_dim_exists(ncid, "ztd"))
        ncw_inq_dimid(ncid, "ztd", &dimid_nz);
    else
        enkf_quit("reader_cars_standard(): neither dimension \"zt\" ot \"ztd\" exist");
    ncw_inq_dimlen(ncid, dimid_nz, &nz);
    enkf_printf("        # z levels = %u\n", (unsigned int) nz);

    ncw_inq_varid(ncid, "lon", &varid_lon);
    lon = malloc(nprof * sizeof(double));
    ncw_get_var_double(ncid, varid_lon, lon);

    ncw_inq_varid(ncid, "lat", &varid_lat);
    lat = malloc(nprof * sizeof(double));
    ncw_get_var_double(ncid, varid_lat, lat);

    ncw_inq_varid(ncid, "zt", &varid_z);
    z = alloc2d(nprof, nz, sizeof(double));
    ncw_get_var_double(ncid, varid_z, z[0]);

    if (strncmp(meta->type, "TEM", 3) == 0)
        ncw_inq_varid(ncid, "temp", &varid_v);
    else if (strncmp(meta->type, "SAL", 3) == 0)
        ncw_inq_varid(ncid, "salt", &varid_v);
    else
        enkf_quit("observation type \"%s\" not handled for CARS product", meta->type);
    v = alloc2d(nprof, nz, sizeof(double));
    ncw_get_var_double(ncid, varid_v, v[0]);
    ncw_get_att_double(ncid, varid_v, "missing_value", &missval);
    ncw_get_att_double(ncid, varid_v, "valid_min", &validmin);
    ncw_get_att_double(ncid, varid_v, "valid_max", &validmax);

    ncw_inq_varid(ncid, "type", &varid_type);
    type = malloc(nprof * sizeof(int));
    ncw_get_var_int(ncid, varid_type, type);

    ncw_close(ncid);

    strcpy(buf, fname);
    len = strlen(buf);
    buf[len - 3] = 0;           /* .nc */
    if (!str2int(&buf[len - 5], &day))
        enkf_quit("CARS reader: could not convert file name \"%s\" to date", fname);
    buf[len - 17] = 0;
    if (!str2int(&buf[len - 19], &month))
        enkf_quit("CARS reader: could not convert file name \"%s\" to date", fname);
    buf[len - 21] = 0;
    if (!str2int(&buf[len - 25], &year))
        enkf_quit("CARS reader: could not convert file name \"%s\" to date", fname);
    snprintf(buf, MAXSTRLEN, "days since %4d-%02d-%02d", year, month, day);

    tunits_convert(buf, &tunits_multiple, &tunits_offset);

    mvid = model_getvarid(m, obs->obstypes[obstype_getid(obs->nobstypes, obs->obstypes, meta->type, 1)].varnames[0], 1);
    depth = model_getdepth(m, mvid, 0);

    for (p = 0; p < (int) nprof; ++p) {
        char inststr[MAXSTRLEN];

        if (type[p] == 11)
            strcpy(inststr, "ARGO");
        else if (type[p] == 12)
            strcpy(inststr, "TAO");
        else if (type[p] == 61)
            strcpy(inststr, "PIRATA");
        else if (type[p] == 7 || type[p] == 9 || type[p] == 13 || type[p] == 35 || type[p] == 41)
            strcpy(inststr, "CTD");
        else if (type[p] == 8 || type[p] == 17)
            strcpy(inststr, "XBT");
        else
            snprintf(inststr, MAXSTRLEN, "CARS%02u", type[p]);

        for (i = 0; i < (int) nz; ++i) {
            observation* o;
            obstype* ot;

            if (fabs(v[p][i] - missval) < EPS || v[p][i] < validmin || v[p][i] > validmax)
                continue;
            if (z[p][i] < 0.0)
                continue;

            obs_checkalloc(obs);
            o = &obs->data[obs->nobs];

            o->product = st_findindexbystring(obs->products, meta->product);
            assert(o->product >= 0);
            o->type = obstype_getid(obs->nobstypes, obs->obstypes, meta->type, 1);
            ot = &obs->obstypes[o->type];
            o->instrument = st_add_ifabscent(obs->instruments, inststr, -1);
            o->id = obs->nobs;
            o->fid = fid;
            o->batch = p;
            o->value = v[p][i];
            o->std = 0.0;
            o->lon = lon[p];
            o->lat = lat[p];
            o->depth = z[p][i];
            o->status = model_xy2fij(m, mvid, o->lon, o->lat, &o->fi, &o->fj);
            if (!obs->allobs && o->status == STATUS_OUTSIDEGRID)
                break;
            if (o->status == STATUS_OK)
                o->status = model_z2fk(m, mvid, o->fi, o->fj, o->depth, &o->fk);
            else
                o->fk = NaN;
            if ((o->status == STATUS_OK) && (o->lon <= ot->xmin || o->lon >= ot->xmax || o->lat <= ot->ymin || o->lat >= ot->ymax || o->depth <= ot->zmin || o->depth >= ot->zmax))
                o->status = STATUS_OUTSIDEOBSDOMAIN;
            o->model_depth = (depth == NULL || isnan(o->fi + o->fj)) ? NaN : depth[(int) (o->fj + 0.5)][(int) (o->fi + 0.5)];
            o->date = tunits_offset + 0.5;
            o->aux = -1;

            obs->nobs++;
        }
    }

    free(lon);
    free(lat);
    free(v);
    free(z);
    free(type);
}
示例#5
0
void reader_navo_standard(char* fname, int fid, obsmeta* meta, model* m, observations* obs)
{
    int addbias = ADDBIAS_DEF;
    int ncid;
    int dimid_nobs;
    size_t nobs_local;
    int varid_lon, varid_lat, varid_sst, varid_sstb, varid_error, varid_time;
    double* lon = NULL;
    double* lat = NULL;
    double* sst = NULL;
    double* sstb = NULL;
    double* error_std = NULL;
    double* time = NULL;
    int year, month, day;
    char tunits[MAXSTRLEN];
    size_t tunits_len;
    double tunits_multiple, tunits_offset;
    char* basename;
    int model_vid;
    int k, i;

    for (i = 0; i < meta->npars; ++i) {
        if (strcasecmp(meta->pars[i].name, "ADDBIAS") == 0)
            addbias = (istrue(meta->pars[i].value)) ? 1 : 0;
        else
            enkf_quit("unknown PARAMETER \"%s\"\n", meta->pars[i].name);
    }
    enkf_printf("        ADDBIAS = %s\n", (addbias) ? "YES" : "NO");

    basename = strrchr(fname, '/');
    if (basename == NULL)
        basename = fname;
    else
        basename += 1;

    ncw_open(fname, NC_NOWRITE, &ncid);
    ncw_inq_dimid(fname, ncid, (ncw_dim_exists(ncid, "nobs")) ? "nobs" : "length", &dimid_nobs);
    ncw_inq_dimlen(fname, ncid, dimid_nobs, &nobs_local);
    enkf_printf("        nobs = %u\n", (unsigned int) nobs_local);

    if (nobs_local == 0) {
        ncw_close(fname, ncid);
        return;
    }

    ncw_inq_varid(fname, ncid, "lon", &varid_lon);
    lon = malloc(nobs_local * sizeof(double));
    ncw_get_var_double(fname, ncid, varid_lon, lon);

    ncw_inq_varid(fname, ncid, "lat", &varid_lat);
    lat = malloc(nobs_local * sizeof(double));
    ncw_get_var_double(fname, ncid, varid_lat, lat);

    ncw_inq_varid(fname, ncid, "sst", &varid_sst);
    sst = malloc(nobs_local * sizeof(double));
    ncw_get_var_double(fname, ncid, varid_sst, sst);

    if (addbias) {
        ncw_inq_varid(fname, ncid, "SST_bias", &varid_sstb);
        sstb = malloc(nobs_local * sizeof(double));
        ncw_get_var_double(fname, ncid, varid_sstb, sstb);
    }

    ncw_inq_varid(fname, ncid, "error", &varid_error);
    error_std = malloc(nobs_local * sizeof(double));
    ncw_get_var_double(fname, ncid, varid_error, error_std);

    ncw_inq_varid(fname, ncid, "GMT_time", &varid_time);
    time = malloc(nobs_local * sizeof(double));
    ncw_get_var_double(fname, ncid, varid_time, time);
    ncw_inq_attlen(fname, ncid, varid_time, "units", &tunits_len);
    ncw_get_att_text(fname, ncid, varid_time, "units", tunits);
    basename[13] = 0;
    if (!str2int(&basename[11], &day))
        enkf_quit("NAVO reader: could not convert file name \"%s\" to date", fname);
    basename[11] = 0;
    if (!str2int(&basename[9], &month))
        enkf_quit("NAVO reader: could not convert file name \"%s\" to date", fname);
    basename[9] = 0;
    if (!str2int(&basename[5], &year))
        enkf_quit("NAVO reader: could not convert file name \"%s\" to date", fname);
    snprintf(&tunits[tunits_len], MAXSTRLEN - tunits_len, " since %4d-%02d-%02d", year, month, day);

    ncw_close(fname, ncid);

    tunits_convert(tunits, &tunits_multiple, &tunits_offset);

    model_vid = model_getvarid(m, obs->obstypes[obstype_getid(obs->nobstypes, obs->obstypes, meta->type)].varname, 1);
    k = grid_gettoplayerid(model_getvargrid(m, model_vid));

    for (i = 0; i < (int) nobs_local; ++i) {
        observation* o;
        obstype* ot;

        obs_checkalloc(obs);
        o = &obs->data[obs->nobs];

        o->product = st_findindexbystring(obs->products, meta->product);
        assert(o->product >= 0);
        o->type = obstype_getid(obs->nobstypes, obs->obstypes, meta->type);
        assert(o->type >= 0);
        ot = &obs->obstypes[o->type];
        o->instrument = st_add_ifabscent(obs->instruments, "AVHRR", -1);
        o->id = obs->nobs;
        o->fid = fid;
        o->batch = 0;
        o->value = (addbias) ? sst[i] + sstb[i] : sst[i];
        o->std = error_std[i];
        o->lon = lon[i];
        o->lat = lat[i];
        o->depth = 0.0;
        o->status = model_xy2fij(m, model_vid, o->lon, o->lat, &o->fi, &o->fj);
        if (!obs->allobs && o->status == STATUS_OUTSIDEGRID)
            continue;
        if ((o->status == STATUS_OK) && (o->lon <= ot->xmin || o->lon >= ot->xmax || o->lat <= ot->ymin || o->lat >= ot->ymax || o->depth <= ot->zmin || o->depth >= ot->zmax))
            o->status = STATUS_OUTSIDEOBSDOMAIN;
        o->fk = (double) k;
        o->date = time[i] * tunits_multiple + tunits_offset;
        o->aux = -1;

        obs->nobs++;
    }

    free(lon);
    free(lat);
    free(sst);
    if (addbias)
        free(sstb);
    free(error_std);
    free(time);
}
示例#6
0
/** For files of the form ??_yyyymmdd.nc. They are assumed to have "time" 
 * variable.
 */
void reader_rads_standard(char* fname, int fid, obsmeta* meta, model* m, observations* obs)
{
    int ncid;
    int dimid_nobs;
    size_t nobs_local;
    int varid_lon, varid_lat, varid_pass, varid_sla, varid_time;
    double* lon;
    double* lat;
    int* pass;
    double* sla;
    double* time;
    double error_std;
    size_t tunits_len;
    char* tunits;
    double tunits_multiple, tunits_offset;
    char* basename;
    char instname[3];
    int mvid;
    float** depth;
    int i;

    ncw_open(fname, NC_NOWRITE, &ncid);

    ncw_inq_dimid(fname, ncid, "nobs", &dimid_nobs);
    ncw_inq_dimlen(fname, ncid, dimid_nobs, &nobs_local);
    enkf_printf("        nobs = %u\n", (unsigned int) nobs_local);

    if (nobs_local == 0) {
        ncw_close(fname, ncid);
        return;
    }

    ncw_inq_varid(fname, ncid, "lon", &varid_lon);
    lon = malloc(nobs_local * sizeof(double));
    ncw_get_var_double(fname, ncid, varid_lon, lon);

    ncw_inq_varid(fname, ncid, "lat", &varid_lat);
    lat = malloc(nobs_local * sizeof(double));
    ncw_get_var_double(fname, ncid, varid_lat, lat);

    ncw_inq_varid(fname, ncid, "pass", &varid_pass);
    pass = malloc(nobs_local * sizeof(int));
    ncw_get_var_int(fname, ncid, varid_pass, pass);

    ncw_inq_varid(fname, ncid, "sla", &varid_sla);
    sla = malloc(nobs_local * sizeof(double));
    ncw_get_var_double(fname, ncid, varid_sla, sla);
    ncw_get_att_double(fname, ncid, varid_sla, "error_std", &error_std);
    enkf_printf("        error_std = %3g\n", error_std);

    ncw_inq_varid(fname, ncid, "time", &varid_time);
    time = malloc(nobs_local * sizeof(double));
    ncw_get_var_double(fname, ncid, varid_time, time);
    ncw_inq_attlen(fname, ncid, varid_time, "units", &tunits_len);
    tunits = calloc(tunits_len + 1, 1);
    ncw_get_att_text(fname, ncid, varid_time, "units", tunits);

    ncw_close(fname, ncid);

    tunits_convert(tunits, &tunits_multiple, &tunits_offset);

    basename = strrchr(fname, '/');
    if (basename == NULL)
        basename = fname;
    else
        basename += 1;
    strncpy(instname, basename, 2);
    instname[2] = 0;

    mvid = model_getvarid(m, obs->obstypes[obstype_getid(obs->nobstypes, obs->obstypes, meta->type)].varname, 1);
    depth = model_getdepth(m, mvid);

    for (i = 0; i < (int) nobs_local; ++i) {
        observation* o;
        obstype* ot;

        obs_checkalloc(obs);
        o = &obs->data[obs->nobs];

        o->product = st_findindexbystring(obs->products, meta->product);
        assert(o->product >= 0);
        o->type = obstype_getid(obs->nobstypes, obs->obstypes, meta->type);
        assert(o->type >= 0);
        ot = &obs->obstypes[o->type];
        o->instrument = st_add_ifabscent(obs->instruments, instname, -1);
        o->id = obs->nobs;
        o->fid = fid;
        o->batch = pass[i];
        o->value = sla[i];
        o->std = error_std;
        o->lon = lon[i];
        o->lat = lat[i];
        o->depth = 0.0;
        o->status = model_xy2fij(m, mvid, o->lon, o->lat, &o->fi, &o->fj);
        if (!obs->allobs && o->status == STATUS_OUTSIDEGRID)
            continue;
        o->fk = 0.0;
        o->date = time[i] * tunits_multiple + tunits_offset;
        if (o->status == STATUS_OK && depth[(int) floor(o->fj + 0.5)][(int) floor(o->fi + 0.5)] < MINDEPTH)
            o->status = STATUS_SHALLOW;
        if ((o->status == STATUS_OK) && (o->lon <= ot->xmin || o->lon >= ot->xmax || o->lat <= ot->ymin || o->lat >= ot->ymax || o->depth <= ot->zmin || o->depth >= ot->zmax))
            o->status = STATUS_OUTSIDEOBSDOMAIN;

        o->aux = -1;

        obs->nobs++;
    }

    free(lon);
    free(lat);
    free(pass);
    free(sla);
    free(tunits);
    free(time);
}
示例#7
0
/** For files of the form y<yyyy>/m<mm>/??_d<dd>.nc with no "time" variable.
 */
void reader_rads_standard2(char* fname, int fid, obsmeta* meta, model* m, observations* obs)
{
    int ncid;
    int dimid_nobs;
    size_t nobs_local;
    int varid_lon, varid_lat, varid_pass, varid_sla, varid_flag;
    double* lon;
    double* lat;
    int* pass;
    double* sla;
    int* flag;
    double error_std;
    char buf[MAXSTRLEN];
    int len;
    int year, month, day;
    double tunits_multiple, tunits_offset;
    char* basename;
    char instname[3];
    int mvid;
    float** depth;
    int i;

    ncw_open(fname, NC_NOWRITE, &ncid);

    ncw_inq_dimid(fname, ncid, "nobs", &dimid_nobs);
    ncw_inq_dimlen(fname, ncid, dimid_nobs, &nobs_local);
    enkf_printf("        nobs = %u\n", (unsigned int) nobs_local);

    if (nobs_local == 0)
        return;

    ncw_inq_varid(fname, ncid, "lon", &varid_lon);
    lon = malloc(nobs_local * sizeof(double));
    ncw_get_var_double(fname, ncid, varid_lon, lon);

    ncw_inq_varid(fname, ncid, "lat", &varid_lat);
    lat = malloc(nobs_local * sizeof(double));
    ncw_get_var_double(fname, ncid, varid_lat, lat);

    ncw_inq_varid(fname, ncid, "pass", &varid_pass);
    pass = malloc(nobs_local * sizeof(int));
    ncw_get_var_int(fname, ncid, varid_pass, pass);

    ncw_inq_varid(fname, ncid, "sla", &varid_sla);
    sla = malloc(nobs_local * sizeof(double));
    ncw_get_var_double(fname, ncid, varid_sla, sla);
    ncw_get_att_double(fname, ncid, varid_sla, "error_std", &error_std);
    enkf_printf("        error_std = %3g\n", error_std);

    ncw_inq_varid(fname, ncid, "local_flag", &varid_flag);
    flag = malloc(nobs_local * sizeof(int));
    ncw_get_var_int(fname, ncid, varid_flag, flag);

    ncw_close(fname, ncid);

    strcpy(buf, fname);
    len = strlen(buf);
    buf[len - 3] = 0;           /* .nc */
    if (!str2int(&buf[len - 5], &day))
        enkf_quit("RADS reader: could not convert file name \"%s\" to date", fname);
    buf[len - 10] = 0;
    if (!str2int(&buf[len - 12], &month))
        enkf_quit("RADS reader: could not convert file name \"%s\" to date", fname);
    buf[len - 14] = 0;
    if (!str2int(&buf[len - 18], &year))
        enkf_quit("RADS reader: could not convert file name \"%s\" to date", fname);
    snprintf(buf, MAXSTRLEN, "days since %4d-%02d-%02d", year, month, day);

    tunits_convert(buf, &tunits_multiple, &tunits_offset);

    basename = strrchr(fname, '/');
    if (basename == NULL)
        basename = fname;
    else
        basename += 1;
    strncpy(instname, basename, 2);
    instname[2] = 0;

    mvid = model_getvarid(m, obs->obstypes[obstype_getid(obs->nobstypes, obs->obstypes, meta->type)].varname, 1);
    depth = model_getdepth(m, mvid);

    for (i = 0; i < (int) nobs_local; ++i) {
        observation* o;
        obstype* ot;

        if (flag[i] != 0)
            continue;

        obs_checkalloc(obs);
        o = &obs->data[obs->nobs];

        o->product = st_findindexbystring(obs->products, meta->product);
        assert(o->product >= 0);
        o->type = obstype_getid(obs->nobstypes, obs->obstypes, meta->type);
        assert(o->type >= 0);
        ot = &obs->obstypes[o->type];
        o->instrument = st_add_ifabscent(obs->instruments, instname, -1);
        o->id = obs->nobs;
        o->fid = fid;
        o->batch = pass[i];
        o->value = sla[i];
        o->std = error_std;
        o->lon = lon[i];
        o->lat = lat[i];
        o->depth = 0.0;
        o->status = model_xy2fij(m, mvid, o->lon, o->lat, &o->fi, &o->fj);
        if (!obs->allobs && o->status == STATUS_OUTSIDEGRID)
            continue;
        o->fk = 0.0;
        o->date = tunits_offset + 0.5;
        if (o->status == STATUS_OK && depth[(int) floor(o->fj + 0.5)][(int) floor(o->fi + 0.5)] < MINDEPTH)
            o->status = STATUS_SHALLOW;
        if ((o->status == STATUS_OK) && (o->lon <= ot->xmin || o->lon >= ot->xmax || o->lat <= ot->ymin || o->lat >= ot->ymax || o->depth <= ot->zmin || o->depth >= ot->zmax))
            o->status = STATUS_OUTSIDEOBSDOMAIN;

        o->aux = -1;

        obs->nobs++;
    }

    free(lon);
    free(lat);
    free(pass);
    free(sla);
    free(flag);
}