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Model Evaluation Tools (MET) and its companion package METplus Wrappers

Continuous statistics

Long name
METplus name
Tools
Along track error (nm)
ALTK_ERR
TC-Pairs
TC-Stat
Anomaly Correl­ation including mean error,
ANOM_CORR
,Point-Stat
Grid-Stat
Series-Analysis
Stat-Analysis
Uncentered Anomaly Correl­ation excluding mean error
ANOM_CORR _UNCNTR
Point-Stat
Grid-Stat
Series-Analysis
Stat-Analysis
Bias-c­orr­ected mean squared error,
BCMSE
,Point-Stat
Grid-Stat
Ensemble-Stat
Climat­olo­gical mean value
CLIMO_MEAN
Point-Stat
Grid-Stat
Ensemble-Stat
Climat­olo­gical standard deviation value
CLIMO_­STDEV
Point-Stat
Grid-Stat
Ensemble-Stat
Cross track error (nm)
CRTK_ERR
TC-Pairs
TC-Stat
Absolute value of DIR_ERR (see below)
DIR_ABSERR
Point-Stat
Grid-Stat
Signed angle between the directions of the average forecast and observed wind vectors
DIR_ERR
Point-Stat
Grid-Stat
Mean of absolute value of forecast minus observed gradients
EGBAR
Grid-Stat
Standard deviation of the error
ESTDEV
Point-Stat
Grid-Stat
Ensemble-Stat
Mean forecast wind speed
F_SPEE­D_BAR
Point-Stat
Grid-Stat
Mean Forecast Anomaly
FABAR
Point-Stat
Grid-Stat
Length (speed) of the average forecast wind vector
FBAR_SPEED
Point-Stat
Grid-Stat
Fractions Brier Score
FBS
Grid-Stat
Direction of the average forecast wind vector
FDIR
,Point-Stat
Grid-Stat
Mean Forecast Anomaly Squared
FFABAR
Point-Stat
Grid-Stat
Average of forecast squared
FFBAR
Ensemble-Stat
Point-Stat
Grid-Stat
Forecast mean
FMEAN
MODE
Grid-Stat
Point-Stat
Average product of foreca­st-­climo and observ­ati­on-­climo / Mean(f­-c)­*(o-c)
FOABAR
Point-Stat
Grid-Stat
Average product of forecast and observ­ation / Mean(f*o)
FOBAR
Ensemble-Stat
Point-Stat
Grid-Stat
Number of tied forecast ranks used in computing Kendall’s tau statistic
FRANK_TIES
Point-Stat
Grid-Stat
Root mean square forecast wind speed
FS_RMS
Point-Stat
Grid-Stat
Standard deviation of the error
FSTDEV
Ensemble-Stat
Point-Stat
Grid-Stat
Interq­uartile Range
IQR
Point-Stat
Grid-Stat
Kendall’s tau statistic
KT_CORR
Point-Stat
Grid-Stat
The Median Absolute Deviation
MAD
Point-Stat
Grid-Stat
Mean absolute error
MAE
Point-Stat
Grid-Stat
Magnitude & Multip­lic­ative bias
MBIAS
Ensemble-Stat
Point-Stat
Grid-Stat
The Mean Error
ME
Ensemble-Stat
Point-Stat
Grid-Stat
The Mean Error of the PERTURBED ensemble mean
ME_OERR
Ensemb­le-Stat
The square of the mean error (bias)
ME2
Point-Stat
Grid-Stat
Mean squared error
MSE
Ensemble-Stat
Wavelet-Stat
Point-Stat
Grid-Stat
The mean squared error skill
MSESS
Point-Stat
Grid-Stat
Mean squared length of the vector difference between the forecast and observed winds
MSVE
Point-Stat
Grid-Stat
Mean observed wind speed
O_SPEE­D_BAR
Point-Stat
Grid-Stat
Mean Observ­ation Anomaly
OABAR
Point-Stat
Grid-Stat
Average observed value
OBAR
Ensemble-Stat
Point-Stat
Grid-Stat
Length (speed) of the average observed wind vector
OBAR_SPEED
Point-Stat
Grid-Stat
Direction of the average observed wind vector
ODIR
Point-Stat
Grid-Stat
Mean Squared Observ­ation Anomaly
OOABAR
Point-Stat
Grid-Stat
Average of observ­ation squared
OOBAR
Ensemble-Stat
Point-Stat
Grid-Stat
Number of tied observ­ation ranks used in computing Kendall’s tau statistic
ORANK_TIES
Point-Stat
Grid-Stat
Root mean square observed wind speed
OS_RMS
Point-Stat
Grid-Stat
Standard deviation of observ­ations
OSTDEV
Ensemble-Stat
Point-Stat
Grid-Stat
Pearson correl­ation coeffi­cient
PR_CORR
Ensemble-Stat
Point-Stat
Grid-Stat
Number of ranks used in computing Kendall’s tau statistic
RANKS
Point-Stat
Grid-Stat
Root mean squared error
RMSE
Point-Stat
Grid-Stat
Ensemble-Stat
Root Mean Square Error of the PERTURBED ensemble mean
RMSE_OERR
Ensemb­le-Stat
Root mean squared forecast anomaly
RMSFA
Point-Stat
Grid-Stat
Root mean squared observ­ation anomaly
RMSOA
Point-Stat
Grid-Stat
Square root of MSVE
RMSVE
Point-Stat
Grid-Stat
S1 score
S1
Grid-Stat
S1 score with respect to observed gradient
S1_OG
Grid-Stat
Scatter Index
SI
Point-Stat
Grid-Stat
Spearman’s rank correl­ation coeffi­cient
SP_CORR
Point-Stat
Grid-Stat
Absolute value of SPEED_ERR
SPEED _ABSERR
Point-Stat
Grid-Stat
Difference between the length of the average forecast wind vector and the average observed wind vector (in the sense F - O),
SPEED_ERR
Point-Stat
Grid-Stat
Track error of adeck relative to bdeck (nm)
TK_ERR
TC-Pairs
Mean U-comp­onent Forecast Anomaly
UFABAR
Point-Stat
Grid-Stat
Mean U-comp­onent
UFBAR
Point-Stat
Grid-Stat
Mean U-comp­onent Observ­ation Anomaly
UOABAR
Point-Stat
Grid-Stat
Mean U-comp­onent Observ­ation
UOBAR
Point-Stat
Grid-Stat
Mean U-comp­onent Squared Forecast Anomaly plus Squared Observ­ation Anomaly
UVFFABAR
Point-Stat
Grid-Stat
Mean U-comp­onent Squared Forecast plus Squared Observ­ation
UVFFBAR
,Point-Stat
Grid-Stat
Mean((­uf-uc)(uo-uc)+ (vf-vc)(vo-vc))
UVFOABAR
Point-Stat
Grid-Stat
Mean(ufuo+vfvo)
UVFOBAR
Point-Stat
Grid-Stat
Mean((­uo-­uc)­²+(­vo-­vc)²)
UVOOABAR
Point-Stat
Grid-Stat
Mean(u­o²+vo²)
UVOOBAR
Point-Stat
Grid-Stat
Direction of the vector difference between the average forecast and average wind vectors
VDIFF_DIR
Point-Stat
Grid-Stat
Length (speed) of the vector difference between the average forecast and average observed wind vectors
VDIFF_­SPEED
Point-Stat
Grid-Stat
Mean(v­f-vc)
VFABAR
Point-Stat
Grid-Stat
Mean(vf)
VFBAR
Point-Stat
Grid-Stat
Mean(v­o-vc)
VOABAR
Point-Stat
Grid-Stat
Mean(vo)
VOBAR
Point-Stat
Grid-Stat

Distance statistics

Long name
METplus name
Tools
Baddeleys Delta Metric
BADDELEY
Grid-Stat
Mean-error Distance from observ­ation to forecast
MED_FO
Grid-Stat
Maximum of MED_FO and MED_OF
MED_MAX
Grid-Stat
Mean of MED_FO and MED_OF
MED_MEAN
Grid-Stat
Minimum of MED_FO and MED_OF
MED_MIN
Grid-Stat
Mean-error Distance from forecast to observ­ation
MED_OF
Grid-Stat

Neighb­orhood statistics

Long name
METplus name
Tools
Asymptotic Fractions Skill Score
AFSS
Grid-Stat
Fractions Skill Score
FSS
Grid-Stat
Uniform Fractions Skill Score
UFSS
Grid-Stat
 

Catego­rical statistics

Long name
METplus name
Tools
Accuracy
ACC
Point-Stat
Grid-Stat
MODE
Bias Adjusted Gilbert Skill Score
BAGSS
Point-Stat
Grid-Stat
Base Rate
BASER
Point-Stat
Grid-Stat
Wavelet-Stat
MODE
Critical Success Index
CSI
Point-Stat
MODE
cts
Grid-Stat
Expected correct rate used for MCTS HSS_EC
EC_VALUE
Point-Stat
Grid-Stat
Extreme Dependency Index
EDI
Point-Stat
Grid-Stat
Extreme Dependency Score
EDS
Point-Stat
Grid-Stat
Forecast rate/event frequency
F_RATE
Point-Stat
Grid-Stat
False alarm ratio
FAR
Point-Stat
Grid-Stat
MODE
Forecast mean
FBAR
Ensemble-Stat
Point-Stat
Grid-Stat
Frequency Bias
FBIAS
Wavelet-Stat
MODE
Point-Stat
Grid-Stat
Count of events in forecast category i and observ­ation category j
Fi_Oj
Point-Stat
Grid-Stat
Number of forecast no and observ­ation no
FN_ON
MODE
Grid-Stat
Point-Stat
Number of forecast no and observ­ation yes
FN_OY
MODE
Grid-Stat
Point-Stat
Attributes for pairs of simple forecast and observ­ation objects
FNNN_ONNN
MODE
Number of forecast events
FY
Grid-Stat
Number of forecast yes and observ­ation no
FY_ON
MODE
Point-Stat
Grid-Stat
Number of forecast yes and observ­ation yes
FY_OY
MODE
Point-Stat
Grid-Stat
Gerrity Score and bootstrap confidence limits
GER
Point-Stat
Grid-Stat
Gilbert Skill Score
GSS
Point-Stat
Grid-Stat
MODE
Hit rate,
H_RATE
Point-Stat
Grid-Stat
Hanssen and Kuipers Discri­minant
HK
MODE
Point-Stat
Grid-Stat
Heidke Skill Score
HSS
MODE
Point-Stat
Grid-Stat
Heidke Skill Score user-s­pecific expected correct
HSS_EC
Point-Stat
Grid-Stat
Logarithm of the Odds Ratio
LODDS
Point-Stat
Grid-Stat
Dimension of the contin­gency table & the total number of categories in each dimension
N_CAT
Point-Stat
Grid-Stat
Observ­ation rate
O_RATE
Point-Stat
Grid-Stat
Odds Ratio
ODDS
MODE
Point-Stat
Grid-Stat
Odds Ratio Skill Score,,
ORSS
Point-Stat
Grid-Stat
Number of observ­ation events
OY
Grid-Stat
Probab­ility of false detection
PODF
Point-Stat
Grid-Stat
Probab­ility of detecting no
PODN
Point-Stat
Grid-Stat
MODE
Probab­ility of detecting yes
PODY
Point-Stat
Grid-Stat
MODE
Probab­ility of detecting yes when forecast is greater than the ith probab­ility thresholds
PODY_i
Point-Stat
Grid-Stat
Probab­ility of false detection
POFD
MODE
Grid-Stat
Probab­ility of false detection when forecast is greater than the ith probab­ility thresholds
POFD_i
Point-Stat
Grid-Stat
Symmetric Extremal Dependency Index,
SEDI
Point-Stat
Grid-Stat
Symmetric Extreme Dependency Score
SEDS
Point-Stat
Grid-Stat

Probab­ility statistics

Long name
METplus name
Tools
Brier Score
BRIER
Point-Stat
Grid-Stat
Climat­olo­gical Brier Score
BRIERCL
Point-Stat
Grid-Stat
Brier Skill Score relative to sample climat­ology
BSS
Point-Stat
Grid-Stat
Brier Skill Score relative to external climat­ology
BSS_SMPL
Point-Stat
Grid-Stat
Calibr­ation when forecast is between the ith and i+1th probab­ility thresholds (repeated)
CALIBR­ATION _i
Point-Stat
Grid-Stat
Likelihood when forecast is between the ith and i+1th probab­ility thresholds repeated
LIKELIHOOD _i
Point-Stat
Grid-Stat
Number of observ­ation when forecast is between the ith and i+1th probab­ility thresholds
ON_i
Point-Stat
Grid-Stat
Number of observ­ation when forecast is between the ith and i+1th probab­ility thresholds
ON_TP_i
Point-Stat
Grid-Stat
Number of observ­ation yes when forecast is between the ith and i+1th probab­ility thresholds
OY_i
Point-Stat
Grid-Stat
Number of observ­ation yes when forecast is between the ith and i+1th probab­ility thresholds as a proportion of the total OY (repeated)
OY_TP_i
Point-Stat
Grid-Stat
Refinement when forecast is between the ith and i+1th probab­ility thresholds (repeated)
REFINEMENT _i
Point-Stat
Grid-Stat
Reliab­ility
RELIAB­ILITY
Point-Stat
Grid-Stat
Resolution
RESOLUTION
Point-Stat
Grid-Stat
Area under the receiver operating charac­ter­istic curve
ROC_AUC
Point-Stat
Grid-Stat
Variab­ility of Observ­ations
UNCERT­AINTY
Point-Stat
Grid-Stat
Economic value of the base rate
VALUE_­BASER
Point-Stat
Grid-Stat
Relative value for the ith Cost/Loss ratio
VALUE_i
Point-Stat
Grid-Stat

Ensemble statistics

Long name
METplus name
Tools
Continuous Ranked Probab­ility Score (normal dist.)
CRPS
Ensemb­le-Stat
Continuous Ranked Probab­ility Score (empirical dist.)
CRPS_EMP
Ensemb­le-Stat
Climat­olo­gical Continuous Ranked Probab­ility Score (normal dist.)
CRPSCL
Ensemb­le-Stat
Climat­olo­gical Continuous Ranked Probab­ility Score (empirical dist.)
CRPSCL_EMP
Ensemb­le-Stat
Continuous Ranked Probab­ility Skill Score (normal dist.)
CRPSS
Ensemb­le-Stat
Continuous Ranked Probab­ility Skill Score (empirical dist.)
CRPSS_EMP
Ensemb­le-Stat
The unpert­urbed ensemble mean value
ENS_MEAN
,Ensem­ble­-Stat
The PERTURBED ensemble mean (e.g. with Observ­ation Error).
ENS_MEAN _OERR
Ensemb­le-Stat
Ignorance Score
IGN
Ensemb­le-Stat
Probab­ility Integral Transform
PIT
Ensemb­le-Stat
Rank of the observ­ation
RANK
Ensemb­le-Stat
Count of observ­ations with the i-th rank
RANK_i
Ensemb­le-Stat
Number of times the i-th ensemble member's value was closest to the observ­ation (repea­ted). When n members tie, 1/n is assigned to each member.
RELP_i
Ensemb­le-Stat
Mean of the Brier Scores for each RPS threshold
RPS
Ensemb­le-Stat
Mean of the reliab­ilities for each RPS threshold
RPS_REL
Ensemb­le-Stat
Mean of the resolu­tions for each RPS threshold
RPS_RES
Ensemb­le-Stat
Mean of the uncert­ainties for each RPS threshold
RPS_UNC
Ensemb­le-Stat
Ranked Probab­ility Skill Score relative to external climat­ology
RPSS
Ensemb­le-Stat
Ranked Probab­ility Skill Score relative to sample climat­ology
RPSS_SMPL
Ensemb­le-Stat
Standard deviation of the mean of the UNPERT­URBED ensemble
SPREAD
Ensemb­le-Stat
Standard deviation of the mean of the PERTURBED ensemble
SPREAD­_OERR
Ensemb­le-Stat
Standard Deviation of unpert­urbed ensemble variance and the observ­ation error variance
SPREAD­_PLUS _OERR
Ensemb­le-Stat
Maximum variance
VAR_MAX
Ensemb­le-Stat
Average variance
VAR_MEAN
Ensemb­le-Stat
Minimum variance
VAR_MIN
Ensemb­le-Stat
 

Diagnostic statistics

Long name
METplus name
Tools
Difference between the axis angles of two objects (in degrees)
ANGLE_DIFF
MODE
Object area (in grid squares)
AREA
MODE
MTD
Forecast object area divided by the observ­ation object area (unitless)
AREA_RATIO
MODE
Area of the object that meet the object definition threshold criteria (in grid squares)
AREA_T­HRESH
MODE
Absolute value of the difference between the aspect ratios of two objects (unitless)
ASPECT­_DIFF
MODE
Object axis angle (in degrees)
AXIS_ANG
MODE
MTD
Difference in spatial axis plane angles
AXIS_DIFF
MTD
Blocking Index
Blocking Index
METplus Use Case
Minimum distance between the boundaries of two objects
BOUNDARY _DIST
MODE
Total great circle distance travelled by the 2D spatial centroid over the lifetime of the 3D object
CDIST _TRAVELLED
MTD
Distance between two objects centroids (in grid units)
CENTROID _DIST
MODE
Latitude of centroid
CENTROID _LAT
MTD
MODE
Longitude of centroid
CENTROID _LON
MTD
MODE
Time coordinate of centroid
CENTROID_T
MTD
X coordinate of centroid
CENTROID_X
MTD
MODE
Y coordinate of centroid
CENTROID_Y
MTD
MODE
Space-Time Coherence Diagram
Coherence Diagram
METplus
Use
Case
Ratio of the difference between the area of an object and the area of its convex hull divided by the area of the complex hull (unitless)
COMPLEXITY
MODE
Ratio of comple­xities of two objects defined as the lesser of the forecast complexity divided by the observ­ation complexity or its reciprocal (unitless)
COMPLEXITY _RATIO
MODE
Minimum distance between the convex hulls of two objects (in grid units)
CONVEX­_HU­LL_DIST
MODE
Radius of curvature
CURVATURE
MODE
Ratio of the curvature
CURVATURE _RATIO
MODE
Center of curvature (in grid coordi­nates)
CURVAT­URE_X
MODE
Center of curvature (in grid coordi­nates)
CURVAT­URE_Y
MODE
Cloud Water / Precip Relati­onship
CW/Precip Relati­onship
Grid-Diag
Difference in object direction of movement
DIRECTION _DIFF
MTD
Difference in the lifetimes of the two objects
DURATION _DIFF
MTD
Object end time
END_TIME
MTD
Difference in object ending time steps
END_TIME _DELTA
MTD
Number of forecast clusters
FCST_CLUS
MODE
Number of points used to define the hull of all of the cluster forecast objects
FCST_C­LUS­_HULL
MODE
Forecast Cluster Convex Hull Point Latitude
FCST_C­LUS­_HU­LL_LAT
MODE
Forecast Cluster Convex Hull Point Longitude
FCST_C­LUS­_HULL _LON
MODE
Number of Forecast Cluster Convex Hull Points
FCST_C­LUS­_HU­LL_NPTS
MODE
Forecast Cluster Convex Hull Starting Index
FCST_C­LUS­_HU­LL_­START
MODE
Forecast Cluster Convex Hull Point X-Coor­dinate
FCST_C­LUS­_HULL_X
MODE
Forecast Cluster Convex Hull Point Y-Coor­dinate
FCST_C­LUS­_HULL_Y
MODE
Forecast Object Raw Values
FCST_O­BJ_RAW
MODE
Number of simple forecast objects
FCST_SIMP
MODE
Number of points used to define the boundaries of all of the simple forecast objects
FCST_S­IMP_BDY
MODE
Forecast Simple Boundary Latitude
FCST_S­IMP­_BD­Y_LAT
MODE
Forecast Simple Boundary Longitude
FCST_S­IMP­_BD­Y_LON
MODE
Number of Forecast Simple Boundary Points
FCST_S­IMP­_BD­Y_NPTS
MODE
Forecast Simple Boundary Starting Index
FCST_S­IMP­_BD­Y_START
MODE
Forecast Simple Boundary X-Coor­dinate
FCST_SIMP _BDY_X
MODE
Forecast Simple Boundary Y-Coor­dinate
FCST_SIMP _BDY_Y
MODE
Number of points used to define the hull of all of the simple forecast objects
FCST_S­IMP­_HULL
MODE
Forecast Simple Convex Hull Point Latitude
FCST_S­IMP­_HU­LL_LAT
MODE
Forecast Simple Convex Hull Point Longitude
FCST_SIMP _HULL_LON
MODE
Number of Forecast Simple Convex Hull Points
FCST_SIMP _HULL_NPTS
MODE
Forecast Simple Convex Hull Starting Index
FCST_SIMP _HULL_­START
MODE
Forecast Simple Convex Hull Point X-Coor­dinate
FCST_SIMP _HULL_X
MODE
Forecast Simple Convex Hull Point Y-Coor­dinate
FCST_SIMP _HULL_Y
MODE
Number of thresholds applied to the forecast
FCST _THRESH _LENGTH
MODE
Number of thresholds applied to the forecast
FCST_T­HRESH _LENGTH
MODE
Pratt’s Figure of Merit from observ­ation to forecast
FOM_FO
Grid-Stat
Maximum of FOM_FO and FOM_OF
FOM_MAX
Grid-Stat
Mean of FOM_FO and FOM_OF
FOM_MEAN
Grid-Stat
Minimum of FOM_FO and FOM_OF
FOM_MIN
Grid-Stat
Pratt’s Figure of Merit from forecast to observ­ation
FOM_OF
Grid-Stat
Distance between the forecast and Best track genesis events (km)
GEN_DIST
TC-Gen
Forecast minus Best track genesis time in HHMMSS format
GEN_TDIFF
TC-Gen
Hausdorff Distance
HAUSDORFF
Grid-Stat
Hovmoeller Diagram
Hovmoeller
METplus Use Case
Best track genesis minus forecast initia­liz­ation time in HHMMSS format
INIT_TDIFF
TC-Gen
10th, 25th, 50th, 75th, 90th, and user-s­pec­ified percen­tiles of intensity of the raw field within the object or time slice
INTENSITY _10, _25, _50, _75, _90, _NN
MODE
Sum of the intens­ities of the raw field within the object (variable units)
INTENSITY _SUM
MODE
Total interest for this object pair
INTEREST
MTD
MODE
Inters­ection area of two objects (in grid squares)
INTERSECT ION_AREA,
MODE
Ratio of inters­ection area to the lesser of the forecast and observ­ation object areas (unitless)
INTERSECT ION_OVER _AREA
MODE
“Volume” of object inters­ection
INTERSECT ION_VOLUME
MTD
Joint Probab­ility Distri­bution between variab­le,­Joint PDF to Diagnose Relati­ons­hip­,Gr­id-Diag Dimension of the latitude
LAT
MODE
Length of the enclosing rectangle
LENGTH
MODE
Dimension of the longitude
LON
MODE
Meridional Means
Meridional Means
METplus
Use
Case
Number of cluster objects
N_CLUS
MODE
Number of simple forecast objects
N_FCST­_SIMP
MODE
Number of simple observ­ation objects
N_OBS_SIMP
MODE
Number of observed clusters
OBS_CLUS
MODE
Number of points used to define the hull of all of the cluster observ­ation objects
OBS_CLUS _HULL
MODE
Observ­ation Cluster Convex Hull Point Latitude
OBS_CLUS _HULL_LAT
MODE
Observ­ation Cluster Convex Hull Point Longitude
OBS_CLUS _HULL_LON
MODE
Number of Observ­ation Cluster Convex Hull Points
OBS_CLUS _HULL_NPTS
MODE
Observ­ation Cluster Convex Hull Starting Index
OBS_CLUS _HULL_­START
MODE
Observ­ation Cluster Convex Hull Point X-Coor­dinate
OBS_CLUS _HULL_X
MODE
Observ­ation Cluster Convex Hull Point Y-Coor­dinate
OBS_CLUS _HULL_Y
MODE
Number of simple observ­ation objects
OBS_SIMP
MODE
Number of points used to define the boundaries of the simple observ­ation objects
OBS_SIMP _BDY
MODE
Observ­ation Simple Boundary Point Latitude
OBS_SIMP _BDY_LAT
MODE
Observ­ation Simple Boundary Point Longitude
OBS_SIMP _BDY_LON
MODE
Number of Observ­ation Simple Boundary Points
OBS_SIMP _BDY_NPTS
MODE
Number of points used to define the hull of the simple observ­ation objects
OBS_SIMP _HULL
MODE
Number of Observ­ation Simple Convex Hull Points
OBS_SIMP _HULL_NPTS
MODE
OLR-based MJO Index
OMI
METplus Use Case
Ratio of the nth percentile (INTEN­SITY_NN column) of intensity of the two objects
PERCENTILE _INTENSITY _RATIO
MODE
Phase Diagram for RMM and OMI,
Phase Diagram
METplus Use Case
Realtime Multiv­ariate MJO Index
RMM
METplus Use Case
Spatial distance between (𝑥,𝑦)(x,y) coordi­nates of object spacetime centroid
SPACE _CENTROID _DIST
MTD
Difference in object speeds
SPEED_­DELTA
MTD
Difference in object starting time steps
START_TIME _DELTA
MTD
Symmetric difference of two objects (in grid squares)
SYMMETRIC _DIFF
MODE
Difference in t index of object spacetime centroid
TIME _CENTROID _DELTA
MTD
Union area of two objects (in grid squares)
UNION_AREA
MODE
Integer count of the number of 3D “cells” in an object
VOLUME
MTD
Forecast object volume divided by observ­ation object volume
VOLUME _RATIO
MTD
Weather Regime Index
Weather Regime Index
METplus Use Case
Width of the enclosing rectangle (in grid units)
WIDTH
MODE
X component of object velocity
X_DOT
MTD
y component of object velocity
Y_DOT
MTD
Y component position error (nm)
Y_ERR
TC-Pairs
Zonal Means
Zonal Means
METplus Use Case
Zhu’s Measure from observ­ation to forecast
ZHU_FO
Grid-Stat
Maximum of ZHU_FO and ZHU_OF
ZHU_MAX
Grid-Stat
Mean of ZHU_FO and ZHU_OF
ZHU_MEAN
Grid-Stat
Minimum of ZHU_FO and ZHU_OF
ZHU_MIN
Grid-Stat
Zhu’s Measure from forecast to observ­ation
ZHU_OF
Grid-Stat
 

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  • Published: 7th April, 2022

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